Single-layer coating

Abstract

The present invention relates to a coating (3) for a household article on a metal support (2), wherein one of the faces (3a) contacts the metal substrate (2) and the other face (3b) is visible to the user, said coating comprising one or more layers, each layer comprising one or more polyaryletherketones (PAEK) and at least one of the layers being made up of: - a PEAK-based polymer phase; - one or more fillers; - optionally one or more additives; - optionally one or more colouring agents.

Description

[0001]Single-layer coating FIELD OF THE INVENTION The field of the invention is that of household articles that are heated or that can be heated, in particular cookware, comprising an element coated with a coating according to the invention. STATE OF THE ART In the field of household articles, in particular cookware, the coatings applied to substrates that are most often metallic (aluminum, cast aluminum, stainless steel, cast steel, etc.) are of various types. More specifically concerning the inner faces of these household articles, PTFE-type fluorinated resin-based coatings have been known for more than 50 years, prized for their excellent non-stick and cleanability properties, thermal stability and resistance to chemicals and various foods. However, the inherent weakness of PTFE is its ductility, which results in coatings that are easy to mark, scratch,to be used with metal utensils (spatulas, forks, spoons, blender sticks, etc.). Organic polymer undercoats are known in the prior art of cookware, however only described to improve the scratch resistance of "soft" coatings based on fluoropolymers such as PTFE. Furthermore, in most cases, the described process requires double curing, bringing the thermostable polymer beyond its melting point before cooling and applying the fluorolayers, which remains very expensive. In application WO 2000 / 54895, the use of an undercoat composed solely of oxy-1,4-phenylenephenylene-oxy-1,4-phenylene carbonyl 1,4-phenylene, PEEK (with particle sizes between 5 µm and 100 µm, and with a d50 preferably of 20 µm) deposited on a metal substrate is mentioned,with a coverage of between 60% and 95% of the surface of the article and then covered with a non-stick coating in mono- or multi-layer, based on fluorinated resins and fluorinated copolymers. The PEEK underlayer is deposited either by pad printing or screen printing, or by spray in the form of dispersion. The thickness of this PEEK layer is between 5 µm and 100 µm. The disadvantage of the process as described is that it requires a double curing of the PEEK-based fluorinated coating. The first curing requires a temperature higher than the melting point of the polymer composing the underlayer (between 380 and 400°C for PEEK) to allow its adhesion to the metal substrate. The article must then be cooled significantly, which is very costly in terms of time and energy,but essential to be able to apply the successive fluorinated layers which will be sintered during a second high temperature firing (> 420°C). Polymers such as polyaryletherketones (PAEK) and in particular oxy-1,4-phenylenephenylene-oxy-1,4-phenylene carbonyl 1,4-phenylene or PEEK, are used in advanced applications for its thermal, mechanical and chemical resistance properties, for example in aeronautics and healthcare. This type of polymer is commercially available in the form of granules and powders resulting from the grinding of these granules. These powders can then be dispersed in aqueous or solvent-based liquid coating formulas, to be applied by spraying (spraying), roller coating, etc. Electrostatic spraying of PEEK in powder form is also possible,and described. This technique has the advantage of considerably limiting overspray since the negatively charged metal substrate will attract the positively charged polymer powder. This approach nevertheless requires a very technical and specialized assembly. The metal substrate must either be connected to ground throughout the manufacturing process of the article in order to avoid the powder detaching, or be heated to a temperature above the melting point of the polymer. It is therefore an expensive technique. DISCLOSURE OF THE INVENTION The present invention proposes an alternative to coatings based mainly on PTFE in order to obtain good resistance to mechanical wear of the coatings, in particular by kitchen utensils for culinary articles and thus improve the durability of their mechanical resistance, in particular when hot and / or their cleanability,in order to extend the life of the article. To overcome the weaknesses of PTFE-type coatings, the invention proposes a coating comprising one or more PAEKs in all its layers as a high-performance thermoplastic polymer, in combination with one or more other polymers, different from PAEK, in at least one of its layers. These other polymers are used to provide complementary performances to the PAEK polymer. This can be: - One or more fluorocarbon resins: these secondary polymers remain interesting for providing a good level of anti-adhesion for certain applications such as pans; - Another aromatic thermoplastic polymer, such as for example PES (Polyethersulfone): its glass transition temperature, much lower than that of PEAK melting, makes it possible to improve the film formation of the coating,which improves adhesion to the substrate; - One or more organopolysiloxane polymer(s): these polymers remain interesting for providing ductility to the coating and promoting its ability to be stretched and drawn; - Another heterocyclic thermoplastic polymer. SUMMARY OF THE INVENTION A first subject of the invention relates to a coating (3) for a household article on a metal support (2) in contact by one of its faces (3a) with the metal substrate (2) and visible to the user by its face (3b), which coating comprises either several layers, each comprising one or more polyarylether ketone(s) (PAEK) and at least one of these layer(s) being constituted of - at least 70% by weight of a polymeric phase, constituted of: o at least 50%, by weight of one or more polyarylether ketone(s) (PAEK), the remainder being chosen from the group consisting of one or more organopolysiloxane polymer(s),of one or more aromatic thermoplastic polymer(s) other than PAEK, of one or more heterocyclic thermoplastic polymer(s), and mixtures thereof, and optionally one or more fluorocarbon resin(s); or o at least 50%, by weight of one or more polymer(s) chosen from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organopolysiloxane polymers and mixtures thereof, the remainder consisting of one or more polyarylether ketone(s) (PAEK), and optionally one or more fluorocarbon resin(s); - one or more filler(s); - optionally one or more additive(s); - optionally one or more coloring agent(s), or a monolayer consisting of: - at least 70% by weight of a polymeric phase, consisting of: o at least 50%, by weight of one or more polyarylether ketone(s) (PAEK),the remainder being chosen from the group consisting of one or more aromatic thermoplastic polymer(s) other than PAEK, one or more heterocyclic thermoplastic polymer(s), and mixtures thereof, and optionally one or more fluorocarbon resin(s); or o at least 50%, by weight of one or more polymer(s) chosen from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, and mixtures thereof, the remainder being made up of one or more polyarylether ketone(s) (PAEK), and optionally one or more fluorocarbon resin(s); - one or more filler(s); - optionally one or more additive(s); - optionally one or more coloring agent(s). Another subject of the invention relates to a coated heating element (1) for a household article, comprising a metal substrate (2) coated on at least one face (2a) with a coating according to the invention,in contact by one of its faces (3a) with the metal substrate (2) and visible to the user by its face (3b). The invention also relates to a method for manufacturing a coated heating element (1) according to the invention comprising the following successive steps: i. Providing a metal substrate (2) having a face (2a), ii. Optionally, prior treatment of the face (2a) of said metal substrate (2) intended to be coated, iii. Application of the layer(s) of the coating (3) on the face (2a), iv. Cooking of the element obtained in step iii. The invention also relates to a household article comprising a coated heating element (1) according to the invention, characterized in that it is a culinary article and in that the face (3b) of the coating according to the invention is capable of receiving food,as well as an electrical cooking appliance comprising a coated heating element (1) according to the invention and a heating source configured to heat said coated heating element (1). DEFINITIONS By the term "layer" or "coating", it is meant, within the meaning of the present invention, a continuous or discontinuous layer. A continuous layer (or also called monolithic layer) is a single whole forming a total flat area completely covering the surface on which it is placed. A discontinuous layer (or non-monolithic layer) may comprise several parts which are not therefore a single whole. The term "base layer" means all the layers from the first layer applied directly to the support (it is preferable that this layer adheres well to the support and provides all its mechanical properties to the coating: hardness, scratch resistance) to the last layer applied before the first decorative layer,when present. The term "finishing layer" or "finish" means a continuous and transparent surface layer, this layer allowing perfect visibility of the decorative layer while protecting it from mechanical attack and giving the coating its non-stick properties. Preferably, the last finishing layer is intended to be in contact with food. The term "decor" or "decorative layer" means one or more continuous or discontinuous layers comprising a pigment composition. The decor may be in the form of one or more patterns, in one or more colors. A decor is clearly visible to the user with the naked eye and at a conventional distance for using the household item. The term "overlapping layers" means partially or completely superimposed layers. These layers may be in the form of partially overlapping patterns,for example concentric discs. "Adjacent layers" means non-overlapping layers. These layers may be in the form of identical or different non-overlapping patterns, preferably distributed uniformly. "Temperature reference pigment composition" means a composition comprising a pigment which, at a given temperature, makes it possible to indicate to the user that the optimum use temperature has been reached. This indication is made by comparing the colours of the thermochromic pigment composition and the temperature reference pigment composition. Either the optimum use temperature is reached when the colours are identical, or the optimum use temperature is reached when the colours are visually very different. The "temperature reference pigment composition" may comprise a pigment which has: - the same colour as the thermochromic pigment composition,at the optimum temperature of use, * either because this pigment has the same colour at room temperature as the thermochromic pigment composition at the optimum temperature of use, and does not change colour with temperature, * or because this pigment has a colour at room temperature different from that of the thermochromic pigment composition which evolves to the same colour as the thermochromic pigment composition at the optimum temperature of use, - a colour very different from that of the thermochromic pigment composition at the optimum temperature of use,whether or not this pigment changes color with the evolution of the temperature. The optimal use temperature can be reached when the color of the temperature reference pigment composition corresponds to a color indicated in the user guide of the household article comprising the coating of the invention or to a color indicated on a color scale provided to the user with said article. The temperature reference pigment composition is thermochromic or thermostable. The temperature reference pigment composition may be, for example, a cooking temperature reference pigment composition or an indication of the risk of overheating. For the purposes of the present invention, the term "thermochromic pigment or pigment composition" should be understood to mean a pigment or pigment composition which changes color depending on the temperature in a given temperature range,this change being reversible. This change in color is visible to the user with the naked eye and at a conventional operating distance. The term "thermostable pigment" means a pigment which does not exhibit a change in color when subjected to an increase in temperature in a given temperature range or which exhibits a change in hue when subjected to an increase in temperature in a given temperature range so small that it is not visible to the user with the naked eye and at a conventional operating distance. Preferably, the thermostable pigments have a color difference ΔE* between 25°C and 200°C of less than 10, ΔE* being defined by the CIE1976 formula in the CIELAB color space:, L1*, a1* and b1* characterizing the L*a*b values ​​of said compound at room temperature L2*, a2* and b2* characterizing the L*a*b values ​​of said compound at 200°C. By "the colors are identical" is meant indistinguishable by the user with the naked eye and at a conventional operating distance. By the expression "cookware", it is necessary to understand within the meaning of the present invention an object intended for cooking. To do this, it is intended to receive a heat treatment. By the expression "object intended to receive a heat treatment", it is necessary to understand within the meaning of the present invention an object which will be heated by an external heating system such as frying pans, saucepans, sauté pans, woks, barbecue grills and which is capable of transmitting the heat energy provided by this external heating system to a material or food in contact with said object. By the expression "electric cooking appliance",the present invention means a heating object having its own heating system such as an electric crepe maker, an electric raclette machine, an electric fondue machine, an electric grill, an electric griddle, an electric cooker, a bread maker, an electric pressure cooking appliance. The term "coating" means the layer covering the metal substrate and adhering to this substrate. In the present invention, the % by weight are expressed in dry weight, i.e. without solvent. DESCRIPTION OF THE FIGURES [Fig. 1] represents a sectional view of an exemplary embodiment of a coated heating element (1) for a household item,comprising a metal substrate (2) coated on at least one face (2a) with a coating (3) in contact by one of its faces (3a) with the metal substrate (2) and visible to the user by its face (3b). [Fig. 2] illustrates the implementation of the Hot Blade test of the examples to evaluate the mechanical durability and scratch resistance of the coating (3). DETAILED DESCRIPTION OF THE INVENTION Coating A first subject of the invention relates to a coating (3) for a household article on a metal support (2) in contact by one of its faces (3a) with the metal substrate (2) and visible to the user by its face (3b), which coating comprises either several layers, each comprising one or more polyarylether ketone(s) (PAEK) and at least one of these layer(s) being constituted of - at least 70% by weight of a polymeric phase, constituted of: o at least 50%, by weight of one or more polyarylether ketone(s) (PAEK),the remainder being selected from the group consisting of one or more organopolysiloxane polymer(s), one or more aromatic thermoplastic polymer(s) other than PAEK, one or more heterocyclic thermoplastic polymer(s), and mixtures thereof, and optionally one or more fluorocarbon resin(s); or o at least 50%, by weight of one or more polymer(s) selected from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organopolysiloxane polymers and mixtures thereof, the remainder being selected from one or more polyarylether ketone(s) (PAEK), and optionally one or more fluorocarbon resin(s); - one or more filler(s); - optionally one or more additive(s); - optionally one or more coloring agent(s), or a monolayer consisting of: - at least 70% by weight of a polymeric phase, consisting of: o at least 50%,by weight of one or more polyarylether ketone(s) (PAEK), the remainder being selected from the group consisting of one or more aromatic thermoplastic polymer(s) other than PAEK, one or more heterocyclic thermoplastic polymer(s), and mixtures thereof, and optionally one or more fluorocarbon resin(s); or o at least 50%, by weight of one or more polymer(s) selected from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, and mixtures thereof, the remainder being selected from one or more polyarylether ketone(s) (PAEK), and optionally one or more fluorocarbon resin(s); - one or more filler(s); - optionally one or more additive(s); - optionally one or more coloring agent(s). It is understood that each of the layers of the coating (3) comprises one or more polyarylether ketone(s) (PAEK). Advantageously,the thickness of the coating (3) according to the invention is between 5 and 200 µm, preferably between 10 and 80 µm. PAEK polymeric phase Advantageously, the polyaryletherketone(s) (PAEK) is (are) chosen from the group consisting of: polyetherketones (PEK), polyetheretherketone (PEEK), polyetherketoneketones (PEKK), polyetheretherketoneketones (PEEKK) and polyetherketoneetherketoneketones (PEKEKK), particularly preferably is (are) PEEK. PAES As aromatic thermoplastic polymer(s) other than PAEK, examples suitable according to the invention are poly(phenylene oxide) (PPO), poly(arylethersulfone) polymer (PAES), and in particular polyethersulfone (PES), polyphenylene ether sulfone (PPSU), polyphenylene sulfide (PPS), poly(arylene sulfide) (PAS), liquid crystal polymers and mixtures thereof. Heterocyclic thermoplastic polymers As heterocyclic thermoplastic polymers,Examples of suitable organopolysiloxane polymers are those obtained from organopolysiloxane polymeric or oligomeric precursors, either in the form of silicone oils with a variable degree of branching, or in the form of silicone resins with a variable degree of pre-crosslinking or copolymers of silicone resins such as silicone-polyester, silicone-alkyd, silicone-polyurethane, silicone-epoxy resins, or in the form of a mixture of silicone oils,silicone resins and silicone resin copolymers. The silicon atoms may be substituted by alkyl (in particular methyl) or aryl (in particular phenyl) groups or mixtures thereof. The oils or resins preferably comprise one or more (2, 3 or more) hydroxy or alkoxy (in particular methoxy, ethoxy, butoxy) functional groups as silicon atom substituents. Preferably, the organopolysiloxane polymer(s) of the coating according to the invention is / are a silicone oil or a silicone resin copolymer. The advantage of using these polymers with very high thermal stability, in particular PAEKs, with continuous use conditions at 260°C, is also to benefit from their very high mechanical properties (Young's modulus, tribology, low coefficient of friction, low surface energy, etc.) and their chemical resistance properties (in acidic and basic conditions, excellent resistance to many solvents),their biocompatibility, their biostability and their recyclability. According to one embodiment, each of the layers of the coating (3) according to the invention comprises at least 1%, preferably at least 5% by weight of one or more polyaryletherketone(s) (PAEK). Advantageously, the polyaryletherketone(s) (PAEK) present in each of the layers is a polyetheretherketone (PEEK) or a polyetherketoneketone (PEKK). Advantageously, the aromatic thermoplastic polymer(s) other than PAEK comprise polyethersulfone (PES) or polyphenylene sulfide (PPS). An amorphous, non-crystalline aromatic thermoplastic polymer, such as PPSU / PES (Polyethersulfone), makes it possible to improve the film formation of the coating because its glass transition temperature is much lower than that of PAEK melting point,which improves adhesion to the substrate. This also advantageously improves the ductility of the material and promotes its stretchable and stampable capabilities. Organopolysiloxanes This family of polymers makes it possible to combine different properties, depending on the polymer structure, such as thermal resistance, lubrication and anti-adhesiveness, hydrophobicity, resistance to heat, thermo-oxidation and chemical and biological attacks, etc. Advantageously, when the polymer phase comprises an organopolysiloxane polymer, this can be obtained by a crosslinking process leading to a polymer network, continuous or discontinuous at the microscopic scale in the polymer phase depending on the concentration,the nature and conformation of the other components in the coating. "Crosslinking" means the chemical reaction leading to one or more covalent bonds between the precursors of the organopolysiloxane polymer and / or between these same precursors and other components of the coating. The coating according to the invention obtained is advantageously solid, "solid" means the characteristic of a cohesive material insoluble in water, in common solvents, in food components such as aqueous or fatty mixtures, even if the material may have great hardness or great flexibility such as an elastomer. The organopolysiloxane polymer network may consist of a combination of 4 simple organosiloxane units called M, D, T and Q depending on the degree of substitution by oxygen of the silicon atom, as described in the following table,where R is an organic substituent described below. [Table 1] The organopolysiloxane polymer is obtained by crosslinking from precursors which can be monomeric or polymeric, or intermediately which can be oligomeric. The organopolysiloxane polymer can also be obtained from a mixture of these different kinds of precursors. When the network contains a higher number of T and Q units, than D, the crosslinking density is higher. The distribution between the M, D, T and Q units depends on the chemical structure of the precursors, in particular on this M, D, T, Q distribution within the precursors. The polymeric precursors are organopolysiloxanes. These macromolecules are formed from M, D, T, and / or Q units as described in the table, where R is independently an alkyl group, in particular methyl, or aryl group, in particular phenyl,different natures of R that can be present on the same macromolecule. Organopolysiloxanes can be either linear or weakly branched (majority of D groups), or branched or highly branched (majority of T and Q groups). Linear or weakly branched organopolysiloxanes are generally liquid, more or less viscous at room temperature, and are called silicone oils. Branched or highly branched (pre-crosslinked) organopolysiloxanes form a network at the level of the individual macromolecule and are called silicone resins. At room temperature, the resins are substantially in solid form, or in liquid form, provided in particular that they have a fairly low molecular weight, in the form of a solution in a solvent or in the form of an aqueous emulsion. They can be copolymerized with organic polymers or oligomers not containing silicon, chosen in particular from polyesters, acrylics, alkyds, polyurethanes,epoxy resins. When the crosslinking is a hydrolysis-polycondensation: it is carried out thanks to the reactive hydroxy or alkoxy functions, in particular methoxy, ethoxy or butoxy, present on the organopolysiloxane. When the crosslinking is a polyaddition (or hydrosilyl tion): it is carried out by reaction between the reactive vinyl functions (-CH=CH2) present on one of the organopolysiloxanes and the reactive silyl hydride functions (Si-H) present on the other organopolysiloxane mixed with the first. All these reactive functions are present on each organopolysiloxane in number of at least one and can be present in number of 2, 3, or more … as much as the molecular structure allows. Silicone oils containing at least one reactive function are called “reactive oils”. The reactive functions can be found either at the end of the macromolecular chain (termination),or distributed over the chain. Silicone-polyester resins in particular have silicone / polyester mass ratios of, for example, 90 / 10, 80 / 20, 70 / 30, 60 / 40, 50 / 50, 40 / 50, 30 / 70, 20 / 80, 10 / 90, advantageously between 80 / 20 and 50 / 50. Linear PDMS silicone oils, pure or pre-emulsified in water, are characterized firstly by their molecular mass, which is a direct increasing function of the viscosity of the pure oil. They are then characterized by the presence or absence of reactive functions, for example hydroxyls on the silicon atoms (silanol), their number and their location on the molecular chain. For example, reactive oils with viscosities between 50 and 20000 mPa.s, and in particular between 300 and 5000 mPa.s, can be used, having at least one reactive function, preferably at least 2, which can be placed at the end of the chain (positions ^,^). Polymer precursors reacting by polyaddition may include, for example, polymethylhydrosiloxane, vinylmethylsiloxane, vinyl-terminated polydimethylsiloxane (PDMS), in particular linear, vinyl-terminated diphenylsiloxane-dimethylsiloxane copolymers, hydride-terminated polydimethylsiloxanes, hydride-terminated polyphenylmethylsiloxanes, cyclic vinylmethylsiloxane, vinyl-MQ resin, trimethylsilyl-terminated polymethylhydrosiloxane, trimethylsiloxane-terminated dimethylsiloxane copolymer, MQ resin hydride, and the like, as well as combinations thereof. Polymeric precursors reacting by hydrolysis-polycondensation, whether silicone resins or silicone oils, may include for example poly(methylsilsesquioxanes), poly(propylsilsesquioxanes), poly(phenylsilsesquioxanes), polydimethylsiloxane (PDMS), polydimethylsiloxane (PDMS), trimethylsilyl terminated,hydroxyl-terminated polydimethylsiloxane (PDMS), silanol-terminated polydimethylsiloxane (PDMS), silanol-terminated polyphenylsiloxane (PDMS), silanol-terminated diphenylsiloxane-dimethylsiloxane copolymer, poly(2-acetoxyethylsilsesquioxanes), organo-modified alkoxysilanes and oligomers thereof, and any similar macromolecules and mixtures thereof. The organopolysiloxane polymer may also be obtained by crosslinking a mixture of one or more monomeric precursors and one or more polymeric precursors as described above, as well as one or more oligomeric precursors which may be linear, branched or cyclic. These oligomeric precursors have a lower molecular weight than the polymeric precursors. Polymeric and / or oligomeric precursors comprising a number of reactive functions as described above greater than 2, advantageously much greater than 2,can be added to the mixture as a "co-binder" in order to promote a high crosslinking density of the finally obtained organopolysiloxane polymer. Monomeric, oligomeric and / or polymeric precursors, in particular silicone resins, copolymerized or not with an organic polymer, act as a polymeric binder in order to obtain the solid organopolysiloxane polymer combined with the TPs of each layer. Organopolysiloxane precursors of the silicone oil type can be considered as additives if they are added in small quantities (generally between 0.1 and 5% in dry weight) in the entire formula of a layer, independently of the other components for the formation of the solid organopolysiloxane polymer. Crosslinking may require a catalyst: - In the case of crosslinking of organopolysiloxanes by hydrolysis-polycondensation, the formula may include a metal catalyst, such as for example platinum-based metal complexes,of tin, zinc, zirconium and cerium, in particular platinum-cyclovinylmethyl-silxane complexes, tin ethylhexanoate, zinc ethylhexanoate, zirconium ethylhexanoate, cerium ethylhexanoate, and dibutyl tin laurate. - In the case of crosslinking of organopolysiloxanes by hydrosylilation, the addition of a catalyst may be necessary: ​​this may be, for example, platinum or a suitable platinum-based catalyst such as the Karstedt catalyst or the Ashbys catalyst. A crosslinking agent, for example carrying Si-H bonds, may be present. Fluorocarbon resins The fluorocarbon resin(s) is / are advantageously chosen from the group consisting of: polytetrafluoroethylene (PTFE), the copolymer of tetrafluoroethylene and perfluoropropylvinylether (PFA), the copolymer of tetrafluoroethylene and hexafluoropropylene (FEP) and mixtures thereof, particularly preferably comprising PTFE. Advantageously,the coating according to the invention does not comprise fluorocarbon resin. Fillers The fillers within the meaning of the invention make it possible to provide mechanical reinforcement and can also provide lubricating properties, hydrophobicity properties, while improving the mechanical strength and thermal conductivity of the coating. The fillers do not only have the function of providing color to the coating, but can contribute to it. The presence of fillers with excellent thermal conductivity makes it possible to compensate for the low thermal conductivity of PAEK polymers. Advantageously, the filler(s) is / are chosen from the group consisting of ceramic (SiO2, etc.) and / or mineral and / or metallic (Al2O3, TiO2, etc.) fillers and / or hydrophobic silicas and / or diamond particles. Preferably, the filler(s) is / are chosen from the group consisting of metal oxides, metal carbides, metal oxynitrides, metal nitrides,and mixtures thereof. Advantageously, said metal is a transition metal, such as at least one of the elements chosen from B, Ni, Ti, Zr or Hf. More preferably, the filler(s) is / are chosen from the group consisting of: - fillers for reinforcement: organic or inorganic hard fillers; the inorganic hard fillers are preferably particles of silicon carbide or alumina or zirconia or graphite, or ceramics, or carbonate, or hydrated alumina, aluminum trihydroxide or one or more metal oxide(s), graphite, graphene; - other fillers for reinforcement chosen from metallic oxides: silica, micas, lamellar fillers, clays such as montmorillonite, sepiolite, gypsite, kaolinite and laponite, zinc dioxide, quartz, and zirconium phosphate, alumina, zirconia, zinc oxide, copper oxide,iron oxide; - fillers chosen from reinforcing fibers: glass or carbon or aramid fiber; - conductive fillers comprising a transition metal carbide and / or a transition metal nitride: characterized in that the transition metal is at least one of the elements chosen from B, Ni, Ti, Zr or Hf, for example: cubic boron nitride, diamond particles, metal particles; - lamellar fillers capable of conferring lubricating properties, such as for example clays, graphene or graphite. The preferred fillers in combination with organopolysiloxanes are: - reinforcing fillers: silica or carbonates with filler rates of at least 10-15% / wt and up to 60% / wt, - alumina, hydrated alumina, aluminum trihydroxide, - silica (precipitated or pyrogenic) with a d50 < 0.1µm and a BET specific surface area > 30m, 2 / g and preferably between 30 and 500 m 2 / g, - or a mixture of quartz and silica, diatomaceous earth or ground quartz, titanium, mica, talc, kaolin, barium sulfate, slaked lime, zinc oxide, expanded vermiculite, unexpanded vermiculite, calcium carbonate, etc. Advantageously, the average diameter d50 of the fillers is between 0.1 and 50 µm, more advantageously between 5 and 15 µm. Advantageously, the proportion of fillers in a layer is between 0.5 and 30% by dry weight relative to the total weight of said layer after firing, preferably between 5 and 20%. Advantageously, the proportion of fillers in the coating (3) is less than 10% by weight relative to the total weight of the coating (3). Additives Advantageously, said additives are chosen from the group consisting of anti-foam agents, dispersing agents, wetting agents, thickeners,and pH adjusters. Said anti-foaming agent(s) are preferably chosen from the group consisting of mineral oils, diols, hydrocarbons, glycerides, oxyrane, emulsified fatty acids. The surfactant(s) is (are) preferably chosen from the group consisting of glycol ether, ethoxylated alcohol excluding alkyl phenol ethoxylates (APE), gemini surfactants. The dispersing agent(s) is (are) preferably chosen from the group consisting of anionic dispersants such as fatty acid derivatives. Said thickeners are preferably chosen from the group consisting of acrylic-based or polyurethane-based copolymer, cellulose, fumed silica. The said pH adjusters are preferably chosen from the group consisting of Bronsted bases: ammonia, amines (triethylamine, triethanolamine, etc.), hydroxides (soda, potash, etc.),carbonates. A preferred adhesion promoter in combination with organopolysiloxanes is an organosilane or an organopolysiloxane having per molecule three hydrolyzable groups bonded to silicon. Advantageously, the proportion of additives in the coating (3) is less than 20% by weight relative to the total weight of said coating (3). Advantageously, the proportion of additives in each layer of the coating (3) is less than 20% by weight relative to the total weight of said layer. Coloring agents Advantageously, the coating according to the invention comprises one or more coloring agent(s) chosen from the group consisting of thermochromic pigments, thermostable pigments, glitter, hologram glitter and mixtures thereof. ^ Thermochromic pigments Preferably, the thermochromic pigment(s) is / are selected from the group consisting of Bi2O3, Fe2O3, V2O5, WO3, CeO2, In2O3, Y1,84Ca0,16Ti1,84V0,16O1,84, AgI,(Bi1-xAx)(V1- yMy)O4 with: - x is equal to 0 or x is between 0.001 and 0.999, - y is equal to 0 or y is between 0.001 and 0.999, - A and M are chosen from the group consisting of nitrogen, phosphorus, an alkali metal, an alkaline earth metal, a transition metal, a poor metal, a metalloid or a lanthanide, - A and M are different from each other. Knowing that A and M are different from each other, when: - A is an alkali metal, it can be chosen from Li, Na, K, Rb, Cs, - M is an alkali metal, it can be chosen from Li, Na, K, Rb, Cs, - A is an alkaline earth metal, it can be chosen from Be, Mg, Ca, Sr, Ba, - M is an alkaline earth metal, it can be chosen from Be, Mg, Ca, Sr, Ba, - A is a transition metal, it can be chosen from Sc, Ti Cr, Mn, Fe, Co, Ni, Cu, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Ta, W, Ir, - M is a transition metal, it can be chosen from Sc, Ti Cr, Mn, Fe, Co, Ni, Cu, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Ta, W, Ir,- A is a poor metal, it can be chosen from Al, Zn, Ga, In, Sn, - M is a poor metal, it can be chosen from Al, Zn, Ga, In, Sn, - A is a metalloid, it can be chosen from B, Si, Ge, Sb, - M is a metalloid, it can be chosen from B, Si, Ge, Sb, - A is a lanthanide, it can be chosen from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, - M is a lanthanide, it can be chosen from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu. Preferably, A and M different from each other are B and / or Mg. Preferably, the pigment (Bi1-xAx)(V1-yMy)O4 has a monoclinic scheelite crystallographic form at room temperature. Preferably, x and y are 0, i.e., the pigment (Bi, 1-x HAS x )(V 1-y M y)O4 is Bismuth Vanadate (BiVO4). Advantageously, a BiVO4 with a monoclinic scheelite crystallographic structure at room temperature is used. Bismuth Vanadate is a yellow inorganic compound, with the formula BiVO4, widely used for its coloristic properties and its lack of toxicity. Registered in the Colour Index International database as QI Pigment Yellow 184, it is notably marketed by the companies Heubach (Vanadur®), BASF (Sicopal®), FERRO (Lysopac) and Bruchsaler Farbenfabrik (Brufasol®).^ Thermostable pigments Preferably, the thermostable pigment(s) is / are selected from the group consisting of: - Yellow pigment of titanium rutile type, - Yellow pigment derived from bismuth, for example selected from stabilized bismuth vanadates (Py184) - Red pigment, for example selected from perylene red (for example PR149, PR178 and PR224), iron oxide, - Orange pigment of bismuth oxyhalides type (PO85), - Bismuth vanadate orange pigment (PO86) - Zinc tin titanium orange pigment (PO82) - Cerium sulfide orange pigment (PO. 75 ; PO 78 ) - Orange-yellow pigment of the antimony titanium chrome rutile type (PBr 24 ) - Orange-yellow pigment of tin and zinc rutile type (Py 216) - Niobium tin zinc sulfide orange yellow pigment (Py227) - Tin and niobium double oxide orange yellow pigment - Co3(PO4)2 - LiCoPO4- CoAl2O4- Cr2O3- TiO2 - PBk28 black pigment (Copper chromite black spinel) - and mixtures thereof. ^ Flakes The flakes that can be used in the context of the present invention can be independently chosen from mica flakes, coated or not, silica flakes, coated or not, aluminum flakes, iron oxide flakes, coated or not. Mica or silica flakes coated with titanium dioxide. The flakes that can be used in the context of the present invention can be treated to give a particular color effect. Preferably, the flake(s) is / are particles selected from the group consisting of particles of mica, aluminum, mica coated with titanium dioxide or mixtures thereof. ^ Hologram flakes Advantageously, the flake(s)is / are hologram flakes, i.e. a mixture of magnetizable particles and non-magnetizable particles. The magnetizable particles may advantageously be particles comprising at least one ferromagnetic metal. These magnetizable particles may be of a homogeneous nature, i.e. made of the same material, or of a composite nature, i.e. these magnetizable particles have a core-shell structure, in which the ferromagnetic metal is found in the core and / or in the shell of said particles. Examples of composite magnetizable particles include mica flakes coated with iron oxide Fe2O3 or stainless steel fibers coated with a sol-gel material, as protection against corrosion during the coating application steps, or plastic flakes coated with iron oxide Fe2O3, or flakes whose core is made of ferromagnetic metal andthe envelope is formed from a plastic material or a sol-gel material. According to one embodiment, a portion of said magnetizable particles is oriented so as to form a three-dimensional decoration. Advantageously, the mixture of magnetizable particles and non-magnetizable particles represents between 1% and 5% by weight of the weight of the layer, preferably between 2% and 3% by weight. Advantageously, the percentage of non-magnetizable particles in the mixture of magnetizable particles and non-magnetizable particles is between 15% and 40% by weight relative to the total weight of the mixture of magnetizable particles and non-magnetizable particles. Advantageously, the magnetizable particles have a dimension D50 less than or equal to 23 µm. The term "D50" is understood to mean, within the meaning of the present invention, the maximum dimension that 50% of the particles have by number. Advantageously, the non-magnetizable particles have a dimension D90between 20% and 250% of the dimension D90 of the magnetizable particles. The term "D90" is understood to mean, within the meaning of the present invention, the maximum dimension that 90% of the particles have in number. Advantageously, the magnetizable particles and / or the non-magnetizable particles are colored on the surface. Advantageously, the non-magnetizable particles consist of mica, aluminum, or mica coated with titanium dioxide. Advantageously, the magnetizable particles consist of iron, iron oxide, iron-coated aluminum, or iron-coated mica, the iron being in ferritic form. Architectures According to one embodiment, the coating according to the invention comprises one or more layers applied to the support. It may be a single-layer or multi-layer coating, the different layers being applied successively. Advantageously, the coating according to the invention comprises one to three layers, preferably two, appliedon the support. Advantageously, the coating according to the invention comprises intermediate layers, preferably two, which may be decorative layers. Advantageously, the coating according to the invention is a non-stick coating, i.e. food preferably does not adhere to the coating. Advantageously, the coating according to the invention is a single-layer non-stick coating. Decorations According to one embodiment, the decorative layer(s) is(are) continuous and covers the entire lower layer. According to another embodiment, the decorative layer(s) does(do) not cover the entire lower layer and forms(form) at least one decoration. Advantageously, the decorative layer(s) compose(s) several decorations, one (i) comprising one or more thermochromic pigment(s) and the other (j) comprising at least one temperature reference pigment composition. According to one embodiment, each of the two decorations (i) and (j)is in the form of adjacent non-overlapping patterns. For example, each decoration is represented by different geometric patterns distributed uniformly over the entire surface and alternating with each other. According to another embodiment, the two decorations (i) and (j) are partially overlapping. For example, each decoration is represented by different geometric patterns distributed uniformly over the entire surface and partially overlapping. Preferably, the two decorations (i) and (j) are overlapping, either because one of the two decorations is a continuous layer and the other decoration covers it in the form of patterns, or because the two decorations (i) and (j) are in the form of overlapping patterns. According to another embodiment, the decorations are applied directly to the substrate. The decoration can be applied by any method well known to those skilled in the art, for example by screen printing or pad printing. Preferably, the polymeric phase,of the layer(s) consisting of at least 70% by weight of said polymeric phase, comprises at least 60% by weight, more preferably at least 70% by weight of one or more polyarylether ketone(s) (PAEK). Said polymeric phase may comprise more than 75%, more than 80%, more than 85%, more than 90% or more than 95% by weight of one or more polyarylether ketone(s) (PAEK). Preferably, the polymeric phase, of the layer(s) consisting of at least 70% by weight of said polymeric phase, comprises at least 60% by weight, more preferably at least 70% of one or more polymer(s) chosen from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organopolysiloxane polymers (when present in the layer) and mixtures thereof. Said polymeric phase may comprise more than 75%, more than 80%, more than 85%, more than 90% or more than 95% by weight of one or morepolymer(s) chosen from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organopolysiloxane polymers (when present in the layer) and mixtures thereof. According to one embodiment, all the layers of the coating (3) according to the invention consist of: - at least 70% by weight of a polymeric phase consisting of: o at least 50%, by weight of one or more polyarylether ketone(s) (PAEK), the remainder being chosen from the group consisting of one or more organopolysiloxane polymer(s), one or more aromatic thermoplastic polymer(s) other than PAEK, one or more heterocyclic thermoplastic polymer(s), and mixtures thereof, and optionally one or more fluorocarbon resin(s); or o at least 50%, by weight of one or more polymer(s) chosen from the group consisting of aromatic thermoplastic polymers other than PAEK,heterocyclic thermoplastic polymers, organopolysiloxane polymers and mixtures thereof, the remainder consisting of one or more polyarylether ketone(s) (PAEK), and optionally one or more fluorocarbon resin(s); - one or more fillers - optionally one or more additive(s) - optionally one or more coloring agent(s). According to another embodiment, the coating (3) comprises several layers and all of its layers comprise a polyether ether ketone (PEEK) and at least one of them consists of: - at least 70% by weight of a polymeric phase consisting of: o at least 50% by weight of a polyether ether ketone (PEEK), the remainder consisting of polyethersulfone (PES), and optionally PTFE; or o at least 50% by weight of polyethersulfone (PES), the remainder consisting of a polyether ether ketone (PEEK) and optionally PTFE - one or more fillers; - optionally one or more additives; -optionally one or more coloring agent(s). According to another embodiment, the coating (3) comprises several layers and all of its layers comprise a polyether ether ketone (PEEK) and at least one of them consists of: - at least 70% by weight of a polymeric phase consisting of: o at least 50% by weight of a polyether ether ketone (PEEK), the remainder consisting of a silicone oil, and optionally PTFE; or o at least 50% by weight of a silicone oil, the remainder consisting of a polyether ether ketone (PEEK) and optionally PTFE - one or more fillers; - optionally one or more additives; - optionally one or more coloring agent(s). According to another embodiment, the coating (3) comprises a monolayer consisting of: - at least 70% by weight of a polymeric phase consisting of: o at least 50% by weight of a polyether ether ketone (PEEK), the remainder consisting of polyethersulfone (PES)or polyamide imide (PAI) or polyphenylene sulfide (PPS) or their mixture, and optionally PTFE; or o at least 50% by weight of polyethersulfone (PES) or polyamide imide (PAI) or polyphenylene sulfide (PPS) or their mixture, the remainder consisting of a polyether ether ketone (PEEK) and optionally PTFE - one or more fillers; - optionally one or more additives; - optionally one or more coloring agents. According to another embodiment, the coating (3) comprises a monolayer consisting of: - at least 70% by weight of a polymeric phase consisting of: o at least 50% by weight of a polyether ether ketone (PEEK), the remainder consisting of polyethersulfone (PES), and optionally PTFE; or o at least 50% by weight of polyethersulfone (PES), the remainder consisting of a polyether ether ketone (PEEK) and optionally PTFE - one or more fillers; - optionally one or more additives; -optionally one or more coloring agent(s). According to another embodiment, the coating (3) comprises a monolayer consisting of: - at least 70% by weight of a polymeric phase consisting of: o at least 50% by weight of a polyether ether ketone (PEEK), the remainder consisting of polyamide imide (PAI), and optionally PTFE; or o at least 50% by weight of polyamide imide (PAI), the remainder consisting of a polyether ether ketone (PEEK) and optionally PTFE - one or more fillers; - optionally one or more additives; - optionally one or more coloring agent(s). According to another embodiment, the coating (3) comprises a monolayer consisting of: - at least 70% by weight of a polymeric phase consisting of: o at least 50% by weight of a polyether ether ketone (PEEK), the remainder consisting of polyphenylene sulfide (PPS), and optionally PTFE; or o at least 50% by weight of polyphenylene sulfide (PPS), theremainder consisting of a polyether ether ketone (PEEK) and optionally PTFE - one or more fillers; - optionally one or more additives; - optionally one or more coloring agent(s). Coated heating element The term "coated heating element" means an assembly of a metal substrate and a coating according to the invention on said metal substrate, the substrate being capable of being heated. Advantageously, a coated heating element according to the invention is a coated cooking element. Another subject of the invention, illustrated in Figure 1, relates to a coated heating element (1) for a household article, comprising a metal substrate (2) coated on at least one face (2a) with a coating (3) according to the invention in contact by one of its faces (3a) with the metal substrate (2) and visible to the user by its face (3b). Metal substrate Advantageously, said metal substrate (2) is a substrate made of aluminum, stainless steel, cast ironiron or aluminum, iron, titanium or copper. For the purposes of the present invention, aluminum means a metal consisting of 100% aluminum or an aluminum alloy. Advantageously, the metal substrate (2) is an aluminum, stainless steel or multilayer metal substrate. The metal substrate (2) may be a two-layer or three-layer substrate, these multilayers being obtainable for example by co-rolling, by hot diffusion under load (solid state bonding) or by hot or cold impact bonding. Preferably, the metal substrate (2) comprises alternating layers of metal and / or metal alloy. According to one embodiment, the metal substrate (2) is an aluminum alloy, stainless steel or multilayer metal substrate whose face (2a) is made of aluminum alloy or stainless steel. Preferably, the metal substrate (2) is an aluminum substrate. Advantageously,the thickness of the metal substrate (2) is between 0.5 mm and 10 mm. Advantageously, the face (2a) of the metal substrate (2) has previously undergone a surface treatment to improve the adhesion of the coating to said substrate. According to one embodiment, the surface of the face (2a) of the metal substrate (2) has undergone a surface treatment, said surface treatment being a chemical attack, brushing, hydration, sandblasting, shot blasting, a physicochemical treatment of the plasma or corona or laser type, chemical activation or a combination of these different techniques. Advantageously, the face of the substrate (2a) on which the coating (3) according to the invention will be applied can be treated so as to increase its specific surface area; for an aluminum substrate, this treatment can be done by anodization (creation of a tubular alumina structure), by chemical attack, by sandblasting, by brushing, by shot blasting or by adding material bythrough a technology such as thermal spraying (flame, plasma or arc spray). The other metal substrates can also be polished, sandblasted, brushed, microblasted or have material added through a technology such as thermal spraying (flame, plasma or arc spray). As metal substrates that can be used in the present invention, mention may advantageously be made of anodized or non-anodized aluminum substrates, optionally polished, brushed, sandblasted, shot-blasted or microblasted, anodized or non-anodized aluminum alloy substrates, optionally polished, brushed, sandblasted or microblasted, steel substrates, optionally polished, brushed, sandblasted, shot-blasted or microblasted, stainless steel substrates, optionally polished, brushed, sandblasted or microblasted, cast steel, aluminum or iron substrates, and copper substrates, optionally hammered or polished. Advantageously, the substrate can be chosen from substrates comprising steel layersferritic stainless steel / aluminum / austenitic stainless steel, substrates comprising stainless steel / aluminum / copper / aluminum / austenitic stainless steel layers, cast aluminum, aluminum or aluminum alloy caps lined with a stainless steel outer base, metal co-laminated substrates, for example two-layer co-laminated substrates comprising a stainless steel layer (for example intended to constitute the inner face of the article) and an aluminum or aluminum alloy layer, anodized or not (for example intended to constitute the outer face of the article). Advantageously, the average arithmetic roughness Ra of the surface of the face (2a) of the metal substrate (2) is greater than or equal to 1 µm. The average arithmetic roughness Ra is measured using a roughness meter according to ISO 4287. Ra represents the arithmetic mean of the deviations from the mean. The surface topography can be studied in particular witha profilometer with a probe equipped with a fine stylus equipped with a diamond tip, or with an optical metrology device such as Altisurf®, in which a chromatic confocal sensor allows a contactless measurement. The study of this surface topography makes it possible to define the average arithmetic roughness Ra. Method Another subject of the invention relates to a method for manufacturing a coated heating element (1) according to the invention comprising the following successive steps: i. Provision of a metal substrate (2) having a face (2a), ii. Optionally, prior treatment of the face (2a) of said metal substrate (2) intended to be coated, iii. Application of the layer(s) of the coating (3) on the face (2a), iv. baking of the element obtained in step iii. Advantageously, step iii is carried out by spraying, screen printing, roller application, electrostatic projection of the coating composition(s) in liquid or powder form of thelayers of the coating (3). In step iii, the layers can be applied wet on wet or drying can be applied between each layer. By baking of the coated substrate, is meant, within the meaning of the present invention, a heat treatment which makes it possible to densify the layer(s) of thermostable coating applied to the substrate. In step iv., baking or also called sintering in certain cases, is carried out. Generally the baking temperature of step iv. is between 230°C and 420°C. Advantageously the baking temperature of step iv. is between 380 and 420°C in the presence of fluorocarbon resins in the polymer phase. The advantageous baking temperature of step iv. is between 230 and 300°C in the presence of organopolysiloxane polymers in the polymer phase, preferably between 230 and 280°C, even more preferably between 230 and 250°C. The advantageous curing temperature of step iv. is between 230 and 300°Cin the presence of thermoplastic polymers, excluding fluorocarbon resins, in the polymer phase, preferably between 250 and 400°C, even more preferably between 280 and 380°C. Drying can be carried out by convection or IR. Advantageously, the method for manufacturing a coated heating element (1) according to the invention comprises a drying step between 80 and 150°C after application of each of the layers. Advantageously, the method for manufacturing a coated heating element (1) according to the invention comprises a single final curing step iv. of all the applied layers. This single curing step is carried out simultaneously for all the applied layers. This embodiment makes it possible to film, fuse and crosslink all the layers together so that they form only one. The coating (3) thus forms a single layer, even if this single layer may not be homogeneous, that is to say it may present heterogeneitycomposition such as for example a concentration gradient of its constituents. Advantageously, the method for manufacturing a coated heating element (1) according to the invention comprises a step of shaping said support (2) before or after step (i) or step iii. The shaping is also called stamping. The application of the coating according to the invention by the method according to the invention can be carried out on the flat substrate or on the shaped substrate or on a locally flat area of ​​the shaped substrate. A thermostable coating layer is obtained. Generally, this coating layer is wet. By wet layer, it is understood within the meaning of the present invention that the layer comprises all or part of its solvents. Preferably, all or part of the solvents of the wet layer are removed, either naturally or by physical treatment, for example by thermal drying, by air flow drying or by vacuum treatment. In such a wayadvantageously, the coating composition according to the invention may further comprise at least one solvent. Advantageously, the solvent may be protic. Advantageously, the solvent may be non-toxic. The solvent usable in the coating composition according to the invention may advantageously comprise at least one alcohol, and may preferably be chosen from isopropanol, methanol, ethanol and mixtures thereof. According to a variant of the method according to the invention, the application of the coating may be carried out in several layers. In this case, the deposition on at least one of the two opposite faces of said substrate of at least one layer of a composition of the coating according to the invention is repeated several times. In this case, the coating according to the invention is multi-layer. It is each layer which is preferably produced in a single printing step, the whole forming a multi-layer. Preferably according to this variant, a drying step is carried out between the application of eachlayer, then the baking of said coated substrate is carried out after application of the last layer. When the shaping step precedes application iii of the coating, the coating is preferably carried out by spraying. When this shaping step is subsequent to application iii of the coating, the coating is preferably carried out by screen printing or by roller. The coating formula to be coated is generally in aqueous form, the polymers of the polymeric phase being in the form of suspensions. Other non-aqueous solvents may also be suitable. According to a variant, the PAEK suspensions have a particle size with a d50 of approximately 10 µm to 15 µm. Household article Another subject of the invention relates to a household article comprising a coated heating element (1) according to the invention. According to one embodiment, said household article is a culinary article and the face (3b) of the coating according to the invention is capable of receivingfood. According to one embodiment, the cooking article comprises a heating face intended to be brought into contact with an external heating source, the heating face being opposite the cooking face intended to be brought into contact with the food during cooking. Advantageously, the cooking article according to the invention is chosen from the group consisting of saucepan, frying pan, skillets or fondue or raclette pots, stewpan, wok, sauté pan, crepe maker, grill, griddle, stockpot, casserole dish, cooker or bread machine bowl, cooking mold. The invention also relates to an electric cooking appliance comprising a coated heating element (1) according to the invention and a heating source configured to heat said coated heating element (1). Advantageously, the electric cooking appliance is chosen from the group consisting of electric crepe maker, electric raclette appliance, electric fondue appliance, electric grill, griddleelectric, electric cooker, bread maker, electric pressure cooking appliance. According to another embodiment, said household item is an everyday item that the user heats. It may be an iron or a steamer, the coating according to the invention covering the soleplate. It may be a hair straightener, the coating according to the invention covering the plates of said hair straightener. The heated household item according to the present invention may in particular be a kitchen item or a small household appliance such as an iron, a hair care item, an insulated pot (for example for a coffee maker) or a blender bowl. The heated small household appliance item according to the present invention may in particular be a kitchen item, and in particular a kitchen item of which one of the two opposite faces of the substrate is an inner face, possibly concave, intended to be placed on the food sidecapable of being introduced into or onto said article, and the other face of the substrate of which is an outer face, possibly convex, intended to be arranged towards a heat source. Non-limiting examples of kitchen articles in accordance with the present invention include, in particular, kitchen articles such as saucepans and frying pans, woks and sauté pans, stewpans and pots, crepe makers, waffle makers, grills, baking molds and plates, griddles, barbecue plates and grills, raclette or fondue sets, rice cookers, jam makers, bread machine bowls, preparation bowls. The small household heating equipment article according to the present invention may in particular be an iron, such as a steam iron or a steam generator, and the coated element according to the present invention is the soleplate of the iron. The small household heating equipment article according to the present invention may in particular be an iron, such as a steam iron or a steam generator, and the coated element according to the present invention is the soleplate of the iron.The invention may in particular be an article for hair care, such as a curling iron or straightening iron, and the element coated according to the present invention is one of the heating plates of the article for hair care. EXAMPLES The aims, aspects and advantages of the present invention will be better understood from the description given below of a particular embodiment of the invention presented by way of non-limiting example. Of course, the invention is in no way limited to the embodiment described and illustrated which has been given only by way of example. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention. 1) Raw materials: Metal substrate: The aluminum discs are an alloy 4006 in the annealed state, 3.4 mm thick and 340 mm in diameter. They were treated by brushing (roughness Ra approximately 2 µm).Screen printing coating is carried out according to the following parameters: - between 1 and 4 layers, preferably 2 or 3 for a multi-layer coating or 1 layer for a single-layer coating; - partial drying can be considered for each layer before coating the next one; - the final cooking is carried out in an oven between 250 and 420°C for 10 to 30 minutes, then the discs are left to cool; - the thickness obtained is between 20 and 50 µm, preferably between 30 and 40 µm. The coated discs are stamped and stretched to form pans with an internal diameter of 20 cm. Silicone resins: - RS1: Organopolysiloxane resin Methyl functionalized ethoxy in aqueous emulsion, Viscosity at 25 °C Approx. Approx. 1500 mPas, Solids content = 52% - RS2: Ethoxy-functionalized polyester organopolysiloxane resin (organopolysiloxane 80% / 20% polyester), solvent-based, Viscosity at 25°C Approx. 2000 mPas, Solids content = 75% - PDMS_1: Resinpolydimethylsiloxane (PDMS) in aqueous emulsion PDMS functionalized, Solids content 62% - PDMS_2: Polydimethylsiloxane (PDMS) resin: linear PDMS functionalized -OH chain ends, Viscosity at 25 °C Approx. 600 mPa.s, Solids content 100% Polyarylether ketone: - PolyEtherEtherKetone (PEEK) powder resin, Vicote 704 from VICTREX, polymer powder with a d50 of 10 µm - an aqueous dispersion of PEEK (Poly ether ether ketone) from VICTREX under the name VICOTE Coatings F804 “Vicote F804”: particle size d50 = 10 µm; solids content 35%; pH between 9.6 and 11.9; viscosity of approximately 11 sec DIN Cup n°6. - PEKK powder resin, KEPSAN 7002 PT from Arkema with a d50 of 20 µm Aromatic thermoplastic polymers: - PolyEtherSulfone (PES) powder resin, micronized grade VERADEL 3100 UFP from SOLVAY, polymer powder with a d50 < 40 µm - Polyphenylene sulfide (PPS) powder resin: Ryton® M110000UFP from SOLVAY Heterocyclic thermoplastic polymers: - Polyethersulfone ...polyamide imide (PAI): TORLON AI10LS from Solvay, powder containing 90% dry extract in N-methylpyrrolidone (NMP / Water) - Polyimide powder resin (PI): P84® NT from Evonik - Polybenzymidazole resin (PBI): Celazole® PBI U-60 Fluorinated resins: - Aqueous dispersion of fluorinated resin (PTFE) at 60% in aqueous phase Reinforcing fillers: - Aerosil R972 (Evonik) Post-treated silica fume dimethyl dichlorosilane, specific surface area (BET) = 90 to 130 m² / g - Talc LUZENAC EL10: Talc / chlorite / dolomite mineral powder - Alumina: Alumina CAHPF 240 d50 = 45-50 µm from Alteo at 100% - Silicon carbide: SIKA® F800 d50 = 6.6 µm of 100% FIVEN or SIKA® F320 d50 = 29.2 µm of 100% FIVEN - Graphene: Graphene in dispersed form in aqueous phase at 5g / kg, Graph'UP W3 grade from Carbon Waters - lamellar fillers: Clay: montmorillonite, sepiolite, laponite Pigments: - Sicopal black K0098FK (Sun Chemical): Chromium / Iron oxide powder: Index = P.BR.29 Solvent Alcohol: - 2-Methoxy-1-methylethyl acetate (MPA) - Butyl Glycol acetate (BGA) - Butyl acetate (BA) - MonoPropylene Glycol (MPG) Polar aprotic solvent: - N-Methyl Imidazole (NMI) - Dimethyl Sulfoxide (DMSO) Additives Anti-foaming agent - moussex 7114HL from Synthon - Tego foamex K7 from Evonik - genapol X089 from Clariant Other additives: - acrylic: Rohagit SD 15: 30% acrylic polymer solution in aqueous phase or SYnthotik 2) TESTS implemented Mechanical durability evaluation tests – Hot scratch resistance The excellent mechanical performance of this coating is evaluated using the hot blade test. This test method evaluates the scratch resistance of a coating on the inner surface of a cookware item to be tested, which is placed on a heat source. This test is carried out using a mobile system consisting of 3 hard metal tips (ballpoint pens) as illustrated in Figure 2. This test, also called "tiger paw", inducesa rotation around its axis and describes an epicyclic movement on the coated surface. The degradation of the coating (appearance of spots on the metal, scratches, delamination of the coating) is visually evaluated after different time cycles. This test ultimately allows two output data to be evaluated: - The delamination of the coating on a metal surface after a test time (duration). - The appearance of the scratch on the metal: Scratch on the metal after a test time (duration). Mechanical durability evaluation tests - Abrasion resistance The article is then subjected to abrasion tests by an abrasive pad followed by a milk test as well as a scratch test. - Scratch test, and wear coefficient This test evaluates the resistance of the coating to the action of an abrasive pad applied to its surface and the drop in anti-adhesion of this coating by a milk carbonization test after it has been subjected to the abrasion cycle. It is based on a standard test: NF D21-511 with adapted particularities. The device used is an abraser driven by a horizontal movement. A fixed arm supports a rectangular pad of dimensions 70 ± 5 mm x 30 ± 5 mm, on which is placed an abrasive pad of the same dimension, and has a tare allowing the application of a load of 21 N (mass of the lever arm included). The abrasive moves at a speed of 33 round trips per minute. The abraded surface is 70 mm x 130 mm, i.e. a stroke of 100 mm, after 1000 abrasion cycles (i.e. 1000 round trips of the abrasive). Method for evaluating drawability: A drawing test, called the Swift test, is carried out with a Zwick BPU 400 drawing machine. Experimental conditions: - cutting of the discs to a diameter of 64 mm - 33 mm punch (Limiting Drawing Ratio = 1.9) - drawing die: 40 mm The hydrated brushed aluminium discs, pickled and coated with coatings according to the invention are shaped by drawingin the form of a 26cm diameter pan. The drawability of a coating on a given substrate is translated into a binary notation: - OK: good drawability = the adhesion of the coating to the substrate after deformation by drawing is good - Not OK: poor drawability = the adhesion of the coating to the substrate after deformation by drawing is not good. Deformation by drawing was carried out in two ways; the evaluation of adhesion is evaluated differently depending on the deformation method. These methods are estimated to give comparable results. Laboratory scale method: The coated aluminum substrate is deformed over a small surface (a disc of approximately 10 cm in diameter is necessary) by a press according to the "Erichsen" or "Godet" method: - "Erichsen": the press deforms the surface with a conical and rounded punch to a depth of around 1 to 2 cm, the coating being on the outside. This mode of deformation submitsalso the coating has a stretching. If after deformation, the coating appears very cracked or flaking / detached from the substrate, its resistance to stamping deformation is poor. To amplify the differences, one can first make a grid (according to ISO 2409 standard) on the area where the punch is applied and then observe if many tiles have detached (with or without application of adhesive tape). - "Godet": the press deforms the substrate with a cylindrical punch (rounded edge), with coating inside: this simulates more the deformation, the stamping in a pan, even if in the tests carried out, a stretching of 0% on the skirt (the cylindrical edge) was carried out. The result is poor when one visually observes any detachment, wrinkling, ... of the coating after deformation. 3) Examples of production of culinary article according to the invention: The coating is carried out flat on flat aluminum discs, by screen printing process. TheAluminum discs are a 4006 alloy in the annealed state, 3.4 mm thick and 340 mm in diameter. They have been treated by brushing (roughness Ra approximately 2 µm). The screen printing coating is carried out according to the following parameters: - Between 1 and 4 layers, preferably 2 or 3, are deposited on the disc; for a multi-layer coating or in 1 layer for a single-layer coating; - each layer is coated using a screen printing screen. A final drying of all the layers is carried out first at room temperature for 5 min, then at 120°C (disc temperature) by convection or infrared, for 5 min. - The final baking is carried out in an oven between 250°C and 420°C for 10 minutes, then the discs are left to cool. - the thickness obtained is between 20 and 50 µm, preferably between 30 and 40 µm. The coated discs are stamped to form pans with an internal diameter of 20 cm, with a stretching rate of the aluminum on the "skirt" (thecircular vertical part) of 0%. The aqueous composition of the coating layer is prepared according to the principle of ball milling. Ball milling involves loading a jar with the sample to be ground and so-called grinding balls and rotating the jar around its axis at a certain speed. The rotation of the jar is usually carried out using a roller machine. The sample can be ground in dry form or dispersed in a suitable solvent (e.g. in water, in alcohol or in a solvent). The dispersion may also contain certain additives (such as a dispersant or an antifoam). [Table 2] n solid phase T Charges % e thermoplastics % in solid phase % in phase EXAMPLE 1 after curing e Thermoplastics after curing Ratio P solid after monolayer in the EAK / in the curing coating Heterocyclic coating in the coating PAI: TORLONAI10 36.4% 76.5% PEEK dispersion: F804 40.1% PEEK / PAI: 52 / 48 laponite 5.3% Graphene15.1% Fillers: 20% Sikkopal K0098FK 2.7% Moussex 7114HL 0.4% 100.0% Solids content (%) of EXAMPLE 1 in liquid form Liquid composition PAI: TORLONAI10 18.00 90% laponite 2.37 100% Graphene 6.71 100% Butyl acetate (BA) 1.18 Water 19.44 Moussex 7114HL 0.20 Sikkopal K0098FK 1.18 PEEK dispersion: F804 50.91 35% Solids content (%) TOTAL 100.00 of the Liquid composition = 44% [Table 3] Thermoplastic Fillers % in solid phase s Thermoplastic % in EXAMPLE 2 phase after curing % in solid phase s solid phase after monolayer in the after PEAK / cooking ratio coating in the TP Aromatic in the coating coating PES: VERADEL 3100 USFP 7.4% 75.5% PEEK dispersion: F804 68.1% PEEK / PES: 90 / 10 laponite 5.6% Fillers: 21% Graphene 15.7% Sikkopal K0098FK 2.8% Moussex 7114HL 0.5% 100.0% Mass in wet Dry extract (%) Example 2 in form (gr) of the liquid Composition of the liquid Composition liquid PES: VERADEL 3100 USFP 3.18 100% laponite 2.39 100% Graphene6.76 100% Butyl acetate (BA) 1,19 E au 1,59Moussex 7114HL 0.20 Sikkopal K0098FK 1.19 PEEK dispersion: F804 83.50 35% Dry extract (%) TOTAL 100 of the Liquid Composition = 43% [Table 4] Thermoplastic Fillers % in solid phase sn % in ph % in phase EXAMPLE 3 after curing solid phase after c PEAK / solid ratio after monolayer in the PTFE curing curing in the coating in the PTFE coating 35.9% 75.6% PEEK dispersion: F804 39.7% PEEK / PTFE: 52 / 48 Alumina CAHP-F240 9.6% Aerosil R972 11.5% Fillers: 21% Sikkopal K0098FK 2.8% Moussex 7114HL 0.5 % 100.0% Wet mass Dry extract (%) of Example 3 in form (gr) the liquid Composition of the liquid Composition liquid PTFE 31.19 60% Alumina CAHP-F240 5.00 100% Aerosil R972 6.00 100% Butyl acetate (BA) 1.48 Water 1.97 Moussex 7114HL 0.25 Sikkopal K0098FK 1.48 PEEK dispersion: F804 59.10 35% TOTAL 106,4582763 49% Example 4: Multi-layer with a base layer in accordance with Example 2 and a top layer in accordance with the composition described below: [Table 5], solid The Charges % in pharmaplastics + higher than after curing Organ in phase Polysiloxane layer % in phase so after example 4 in the cooking lide Organopolysiloxane cooking [Table 6] % in phase Thermoplastics Fillers solid after % in phase % in phase EXAMPLE 5 solid Thermoplastics curing after curing solid after monolayer PEAK Ratio / in the in the TP Aromatic curing coating coating in the coating PES: VERADEL 3100 USFP 61.7% 72.9% PEEK dispersion: F804 11.1% PEEK / PES: 15 / 85 Alumina CAHP-F240 9.4% Fillers: 21% Aerosil R972 11.2% Sikkopal K0098FK 5.6% Moussex 7114HL 0.9% 100.0% Mass in wet Dry extract (%) of Example 5 in form (gr) the liquid Composition of the liquid Composition liquid PES: VERADEL 3100 USFP 26.9 Alumina CAHP-F240 4.1 100% Aerosil R972 4.9 100% Butyl acetate (BA) 2,4 Water 44.9 Moussex 7114HL 0.4 Sikkopal K0098FK 2.4 PEEK dispersion: F804 13,935% TOTAL 100 44% [Table 7] TP Fillers % in solid phase % in TP phase % in EXAMPLE 6 phase after cooking solid after PEAK / solid ratio after monolayer sson in the coating cooking Heterocyclic and / cooking in the or Aromatic in the coating coating PES: VERADEL 3100 USFP 23.6% 92.2% PEEK dispersion: F804 68.6% PEEK / PES: 74 / 26 Aerosil R972 4.7% Graph'UP W3 1.9% Fillers: 7% Sikkopal K0098FK 1.2% 100.0% Wet mass (gr) Dry extract Example 6 in liquid form Composition of the (%) of the liquid Liquid composition PES: VERADEL 3100 USFP 3.6 100% Aerosil R972 0.7 Graph'UP W3 58.3 0.5% NMI 6.9 Moussex 7114HL 0.1 Sikkopal K0098FK 0.2 PEEK dispersion: Vicote F804 30.2 35% TOTAL 100 15.4% [Table 8] TP Charges % in solid phase % in TP phase % in EXAMPLE 7 phase of after c solid after PEAK / solid ratio after Monolayer baking in the coating baking Heterocyclic and / baking in the or Aromatic in the coating coating PPS: Ryton® M110000UFP 23.6% 92.2% PEEK dispersion: F804 68.6% PEEK / PPS: 74 / 26 SIKA® F320 4.7% Fillers: 7% Graph'UP W3 1.9% Sikkopal K0098FK 1.2% 100.0% Wet mass Dry extract (%) Example 7 in liquid form (gr) of the Composition of the Liquid Liquid Composition Ryton® M110000UFP 3.6 100% SIKA® F320 0.7 Graph'UP W3 58.3 0.5% NMI 6.9 Moussex 7114HL 0.1 Sikkopal K0098FK 0.2 PEEK dispersion: Vicote F804 30.2 35% TOTAL 100 15.4% [Table 9] TP Fillers % in phase % in phase TP % in phase EXAMPLE 8 solid after c solid after PEAK / solid after Ratio Monolayer cooking in the coating cooking Heterocyclic and / cooking in the or Aromatic in the coating coating PPS: 40.0% Ryton® M110000UFP PEEK dispersion: F80444.0% 92.0%PEEK / PPS / PAI: 48 PAI: TORLONAI10 8.0% / 43 / 9 SIKA® F800 5.0% Fillers: 6% Graph'UP W3 1.0% Sikkopal K0098FK 2.0% 100.0% Wet mass (gr) Dry extract (%) Example 8 in liquid form Composition of the liquid Composition of the liquid Ryton® M110000UFP 9,4 100% PAI: TORLON AI10LS 2.1 90% SIKA® F800 1.2 Graph'UP W3 46.9 0.5% NMI 10.5 Moussex 7114HL 0.1 Sikkopal K0098FK 0.5 PEEK dispersion: Vicote F804 29.4 35% TOTAL 100 23.4% [Table 10] TP Fillers % in phase TP % in phase EXAMPLE 9 % in phase E se solid after curing solid after PEAK / solid ratio after Monolayer in the coating curing Heterocyclic and / or curing in the coating Aromatic in the coating PES: VERADEL 3100 USFP 40.0% PEEK dispersion: F80485.0% 45.0% PEEK / PES: 53 / 47SIKA® F800 12.0%, Charges : Graph'UP W3 2.0% 14%Sikkopal K0098FK 1.0% 100.0% Wet mass (gr) Dry extract Example 9 in liquid form Composition of the (%) of the liquid Liquid composition PES: VERADEL 3100 USFP 6.4 100% SIKA® F800 1.9 Graph'UP W3 63.8 0.5% DMSO 7.2 Moussex 7114HL 0.1 Sikkopal K0098FK 0.2 PEEK dispersion: Vicote F804 20.4 35% TOTAL 100 16.0% [Table 11] TP Fillers % in phase % in phase TP % in phase EXAMPLE 10 solid e after solid after Ratio PEAK / solid after Monocouch s curing in the coating curing Heterocyclic and / or curing in the coating Aromatic in the coating PPS: 40.0% Ryton® M110000UFP PEEK powder: Vicote 704 44.0% 89,0% TORLONAI10 5.0 PEEK / PPS / PAI: 49 / PAI: % 45 / 5 Boron Nitride 8.0% Charges : Graph'UP W3 1.0% 9 %Sikkopal K0098FK 2.0% 100.0% Wet mass (gr) Dry extract Example 10 in liquid form Composition of the (%) of the liquid Liquid composition Ryton® M110000UFP 7.9 100% PAI: TORLON AI10LS 1.1 90% Boron Nitride 1.6 100% Graph'UP W3 39.6 0.5% NMI 20.3 MPG 20.3 genapol X089 0.1 Sikkopal K0098FK 0.4 PEEK powder: Vicote 704 8.6 100% TOTAL 100.0 19.8% [Table 12] The Charges % in solid phase thermoplastic % in solid phase Thermoplastic % in phase COUNTER-EXAMPLE 1 after curing olayer in the after curing solid after Mon sound Ratio PEAK / in the TP Aro cooking coating matic coating in the coating VERADEL 3100 USFP 15.0% 17.7% PEEK dispersion: F804 2.7% PEEK / PES: 15 / 85 Alumina CAHP-F240 30.3% Fillers: 76% Aerosil R972 45.4% Sikkopal K0098FK 6.1% Moussex 7114HL 0.6% 100.0% Mass in wet Dry extract (%) Counter-example 1 in (gr) of the liquid form Composition of the liquid Composition liquid PES: VERADEL 3100 USFP 6.5 Alumina CAHP-F240 13.1 Aerosil R972 19,7 Butyl acetate (BA) 3.9 Water 50.6 Moussex 7114HL 0.3 Sikkopal K0098FK 2.6 PEEK dispersion: F804 3.3 35% TOTAL 100 43% Results of swift, hot blade and abrasion tests [Table 13] ABRAS ples TEST S ION Example WIFT Drawability HOT BLADE Number of cycles at the end of the test 1 ok No metal scratch 80000 2 ok No metal scratch 120000 3 ok No metal scratch 60000 4 ok No metal scratch 140000 5 ok No metal scratch 30000 6 ok No metal scratch 80000 7 ok No metal scratch 130000 8 ok No metal scratch 180000 9 ok No metal scratch 70000 10 ok No of metal scratch 210000 COUNTER EXAMPLE 1 NOK Metal scratch at 30 minutes 7000,

Claims

CLAIMS 1. Coating (3) for a household article on a metal support (2) in contact by one of its faces (3a) with the metal substrate (2) and visible to the user by its face (3b), which coating comprises either several layers, each comprising one or more polyarylether ketone(s) (PAEK) and at least one of these layer(s) being constituted of - at least 70% by weight of a polymeric phase, constituted of: o at least 50%, by weight of one or more polyarylether ketone(s) (PAEK), the remainder being chosen from the group consisting of one or more organopolysiloxane polymer(s), one or more aromatic thermoplastic polymer(s) other than PAEK, one or more heterocyclic thermoplastic polymer(s), and mixtures thereof, and optionally one or more fluorocarbon resin(s);or o at least 50%, by weight of one or more polymer(s) chosen from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organopolysiloxane polymers and mixtures thereof, the remainder consisting of one or more polyarylether ketone(s) (PAEK), and optionally one or more fluorocarbon resin(s); - one or more filler(s); - optionally one or more additive(s); - optionally one or more coloring agent(s); either a monolayer consisting of: - at least 70% by weight of a polymeric phase, consisting of: o at least 50%, by weight of one or more polyarylether ketone(s) (PAEK), the remainder being chosen from the group consisting of one or more aromatic thermoplastic polymer(s) other than PAEK, one or more heterocyclic thermoplastic polymer(s), and mixtures thereof, and optionally one or more fluorocarbon resin(s);or o at least 50%, by weight of one or more polymer(s) chosen from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, and mixtures thereof, the remainder consisting of one or more polyarylether ketone(s) (PAEK), and optionally one or more fluorocarbon resin(s); - one or more filler(s); - optionally one or more additive(s); - optionally one or more coloring agent(s).

2. Coating (3) according to claim 1, characterized in that the polyarylether ketone(s) (PAEK) is / are chosen from the group consisting of polyetherketones (PEK), polyetheretherketone (PEEK), polyetherketoneketones (PEKK), polyetheretherketoneketones (PEEKK) and polyetherketoneetherketoneketones (PEKEKK) and mixtures thereof.

3. Coating (3) according to claim 1, characterized in that the aromatic thermoplastic polymer(s) other than PAEK is / are chosen from the group consisting of poly(phenylene oxide) (PPO), poly(arylethersulfone) polymer (PAES), and in particular polyethersulfone (PES), polyphenylene ether sulfone (PPSU), polyphenylene sulfide (PPS), poly(arylene sulfide) (PAS), liquid crystal polymers and mixtures thereof. 4.Coating (3) according to claim 1, characterized in that the heterocyclic thermoplastic polymer(s) is / are chosen from the group consisting of polyetherimide (PEI), polyimides (PI), polyamide imides (PAI) and polybenzymidazole (PBI) and mixtures thereof.

5. Coating (3) according to any one of the preceding claims, characterized in that the organopolysiloxane polymer(s) is / are chosen from the group consisting of polymers obtained from organopolysiloxane polymeric or oligomeric precursors, either in the form of silicone oils with a variable degree of branching, or in the form of silicone resins with a variable degree of pre-crosslinking or copolymers of silicone resins such as silicone-polyester, silicone-alkyd, silicone-polyurethane, silicone-epoxy resins, or in the form of a mixture of silicone oils, silicone resins and copolymers of silicone resins. 6.Coating (3) according to any one of the preceding claims, characterized in that the or at least one of the polyarylether ketone(s) (PAEK) present in each of the layers is a polyetheretherketone (PEEK) or a polyetherketoneketone (PEKK).

7. Coating (3) according to any one of the preceding claims, characterized in that the aromatic thermoplastic polymer(s) other than PAEK comprise polyethersulfone (PES) or polyphenylene sulfide (PPS).

8. Coating (3) according to any one of the preceding claims, characterized in that the organopolysiloxane polymer(s) is / are a silicone oil or a copolymer of silicone resins.

9. Coating (3) according to any one of the preceding claims, characterized in that the polymeric phase comprises at least 60% by weight of one or more polyarylether ketone(s) (PAEK).

10. Coating (3) according to any one of the preceding claims, characterized in that the polymeric phase comprises at least 70% by weight of one or more polyarylether ketone(s) (PAEK). 11.Coating (3) according to any one of claims 1 to 8, characterized in that the polymeric phase comprises at least 60% by weight of one or more polymer(s) chosen from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organopolysiloxane polymers and mixtures thereof.

12. Coating (3) according to claim 11, characterized in that the polymeric phase comprises at least 70% by weight of one or more polymer(s) chosen from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organopolysiloxane polymers and mixtures thereof. 13.Coating (3) according to any one of claims 1 to 8, characterized in that the coating comprises several layers and all its layers comprise a polyether ether ketone (PEEK) and at least one of them consists of: - at least 70% by weight of a polymeric phase consisting of: o at least 50% by weight of a polyether ether ketone (PEEK), the remainder consisting of polyethersulfone (PES), and optionally PTFE; or o at least 50% by weight of polyethersulfone (PES), the remainder consisting of a polyether ether ketone (PEEK) and optionally PTFE. - one or more fillers; - optionally one or more additives; - optionally one or more coloring agents.

14. Coating (3) according to any one of claims 1 to 8, characterized in that the coating comprises several layers and all of its layers comprise a polyether ether ketone (PEEK) and at least one of them consists of: - at least 70% by weight of a polymeric phase consisting of: o at least 50% by weight of a polyether ether ketone (PEEK), the remainder consisting of a silicone oil, and optionally PTFE; or o at least 50% by weight of a silicone oil, the remainder consisting of a polyether ether ketone (PEEK) and optionally PTFE - one or more fillers; - optionally one or more additives; - optionally one or more coloring agents. 15.Coating (3) according to any one of the preceding claims, characterized in that the filler(s) is / are chosen from the group consisting of ceramic and / or mineral and / or metallic and / or hydrophobic silica fillers and / or diamond particles.

16. Coating (3) according to any one of the preceding claims, characterized in that it is a non-stick coating.

17. Coated heating element (1) for a household item, comprising a metal substrate (2) coated on at least one face (2a) with a coating according to any one of the preceding claims, in contact by one of its faces (3a) with the metal substrate (2) and visible to the user by its face (3b).

18. Method for manufacturing a coated heating element (1) according to claim 17, comprising the following successive steps: i. Providing a metal substrate (2) having one face (2a), ii.Optionally, prior treatment of the face (2a) of said metal substrate (2) intended to be coated, iii. application of the layer(s) of the coating (3) on the face (2a), iv. firing of the element obtained in step iii.

19. A method of manufacturing a coated heating element (1) according to claim 18, characterized in that step iii is carried out by spraying, screen printing, roller application, electrostatic projection of the coating composition(s) in liquid or powder form of the layer(s) of the coating (3).

20. A method of manufacturing a coated heating element (1) according to claim 18, comprising a drying step between 80 and 150°C after application of each layer(s).

21. A method of manufacturing a coated heating element (1) according to claim 18, comprising a single final baking step iv. of all the applied layers.

22. A method of manufacturing a coated heating element (1) according to any one of claims 16 to 21, comprising a step of shaping said support (2) before or after step i or step iii. 23.Household article comprising a coated heating element (1) according to claim 17, characterized in that it is a culinary article and in that the face (3b) of the coating according to any one of claims 1 to 16 is capable of receiving food.

24. Culinary article according to claim 23 chosen from the group consisting of saucepan, frying pan, frying pans or pots for fondue or raclette, stewpot, wok, sauté pan, crepe pan, grill, griddle, pot, casserole dish, cooker or bread machine bowl, and cooking mold.

25. Electrical cooking appliance comprising a coated heating element (1) and a heating source configured to heat said coated heating element (1), characterized in that said coated heating element (1) is according to claim 17. 26.Electric cooking appliance according to claim 25, chosen from the group consisting of electric crepe maker, electric raclette appliance, electric fondue appliance, electric grill, electric griddle, electric cooker, bread machine, electric pressure cooking appliance.

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