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297 results about "Bond coat" patented technology

Integrated preparation method of SiC-based composite material environment barrier coating

The invention discloses an integrated preparation method of a SiC-based composite material environment barrier coating in the technical field of aviation thermal structure materials, which comprises the following steps: cleaning a substrate, carrying out vacuum impregnation of phenolic resin and curing, coating Si slurry to form a bonding layer, coating rare earth silicate slurry to form a barrier layer, and drying to obtain the SiC-based composite material environment barrier coating. And finally carrying out high-temperature heat treatment in an inert atmosphere. According to the method, through an integrated slurry coating and gradient curing process, the performance of a base body is protected, and meanwhile efficient preparation of the coating is achieved; by adopting an integrated slurry coating and gradient curing technology and combining with an optimized medium-temperature sintering process, the matrix performance is effectively protected while the compactness of the coating is ensured, the bonding strength and interface stability of the coating are improved through the design of the phenolic resin transition layer and the silicon bonding layer in cooperation with the rare earth silicate barrier layer, and the bonding strength of the coating is improved. And the coating shows excellent protection performance in a high-temperature corrosion environment.
Owner:YANGZHOU PINGHANG AVIATION POWER TECH CO LTD +1

Preparation method of strengthening and toughening environmental barrier coating

The invention discloses a preparation method of a toughening environmental barrier coating, and relates to a preparation method of a coating. The invention aims to solve the problem of poor fracture toughness of the existing environmental barrier coating. The method comprises the following steps: 1, pretreating a base material; 2, preparing a bonding layer; and 3, preparing the environmental barrier layer. The high-melting-point metal silicide prepared on the surface of the base material or the bonding layer compounded by the high-melting-point metal silicide and the rare earth silicate has excellent temperature resistance and good interface bonding strength, and due to the addition of the rare earth silicate, the expansion coefficient of the bonding layer is highly matched with that of the base material; according to the prepared yttrium oxide stabilized zirconia fiber, mullite fiber or silicon carbide fiber reinforced rare earth silicate environmental barrier layer, the fracture toughness of pure Yb2SiO5 is improved to 6.5 MPa.m < 1 / 2 >-8.0 MPa.m < 1 / 2 > from about 1.85 MPa.m < 1 / 2 >. The strengthening and toughening environmental barrier coating prepared by the invention has very important significance on development of thermal protection coatings of hot end parts of aircrafts with high thrust-weight ratios in China.
Owner:INNER MONGOLIA UNIV OF TECH

Color photovoltaic module

The invention discloses a colored photovoltaic module which comprises a transparent colored glaze panel, a transparent bonding layer A, a battery layer, a bonding layer B and a back plate which are sequentially packaged in a stacked mode. The transparent colored glaze panel comprises a glass substrate, a transparent colored coating covering the outer side surface of the glass substrate, and a transparent glaze layer covering the outer side surface of the transparent colored coating; the transparent glaze layer is combined with the transparent colored coating through a covalent bond; the main component of the transparent glaze layer is silicon dioxide. The transparent colored coating of the colored photovoltaic module is positioned on the outer surface of the glass panel of the photovoltaic module, so that the defect of glass texture of a traditional photovoltaic module serving as a building material product is overcome; a transparent glaze layer with silicon dioxide as a main component is further arranged outside the transparent colored coating to serve as a protective layer, the adhesion fastness is high, the excellent performance of high hardness, high transparency, super weather resistance, acid and alkali resistance, scratch resistance and stain resistance is achieved, and the colored coating is effectively protected against color fading, falling off and external erosion such as acid rain, ultraviolet and sand wind.
Owner:HANGZHOU BOMEI SOLAR ENERGY TECHNOLOGY CO LTD +1

Thermal barrier coating with interface three-dimensional bionic structure as well as preparation method and application of thermal barrier coating

The invention provides a thermal barrier coating with an interface three-dimensional bionic structure and a preparation method and application of the thermal barrier coating, and belongs to the technical field of thermal barrier coatings. By means of 3D printing, preparation of a complex, special and arrangement-distribution-controllable three-dimensional texture component with a complex geometrical shape and an internal structure can be achieved, and therefore the coating interface residual stress, the contact area and the pinning effect are improved; 3D printing can avoid internal oxidation of the bonding layer, and meanwhile it is ensured that the structure of the multi-level interface is uniform and stable; and then the ceramic layer is prepared by combining the spraying technology, preparation of the interface three-dimensional bionic structure thermal barrier coating is achieved, interface mechanical engagement of the bonding layer and the ceramic layer can be increased through the structure, an interlocking mechanism is achieved, the coating interface structure and residual stress are improved, and therefore the service life of the coating is greatly prolonged, and the bonding strength of the coating is greatly improved.
Owner:EAST CHINA UNIV OF SCI & TECH

Slurry valve erosion-resistant multi-layer coating with gradient function design and preparation method of slurry valve erosion-resistant multi-layer coating

The invention relates to the technical field of material science, and discloses a slurry valve erosion-resistant multi-layer coating with gradient function design and a preparation method thereof.The coating comprises a bonding layer, a gradient function layer and an erosion-resistant surface layer which are sequentially arranged from inside to outside, the bonding layer is composed of nickel-based alloy or cobalt-based alloy, the thickness of the bonding layer is 50-100 micrometers, and the thickness of the gradient function layer is 50-100 micrometers. The gradient functional layer is made of composite powder of metal and ceramic, the metal is nickel or cobalt, the ceramic is tungsten carbide or chromium carbide, and the components of the gradient functional layer are from the bonding layer side to the erosion-resistant surface layer side; the bonding layer is arranged and forms firm metallurgical bonding with the matrix, the interface stress is reduced, the basic reliability of bonding of the coating and the matrix is guaranteed, meanwhile, the gradient functional layer with the metal and ceramic volume fraction gradually changing continuously is adopted, the problem that the thermal expansion coefficients of the coating and the matrix are not matched is solved, and the service life of the coating is prolonged. And the crack initiation and expansion risk caused by internal stress concentration is reduced, so that the long-term stability of the coating structure is ensured.
Owner:YANGQUAN VALVE CO LTD

Super-thick and strong-bonding double-ceramic-layer thermal barrier coating and preparation method thereof

The invention relates to the technical field of thermal barrier coatings for gas turbines or aero-engines, and particularly discloses an ultra-thick and strong-bonding double-ceramic-layer thermal barrier coating and a preparation method thereof.The thermal barrier coating is composed of an MCrAlY bonding layer, a YSZ ceramic layer bottom layer and a high-entropy rare earth zirconate ceramic layer surface layer; the MCrAlY bonding layer is prepared through atmospheric plasma or hypersonic flame spraying, YSZ and high-entropy rare earth zirconate spherical powder serve as spraying raw materials, and the thermal barrier coating is prepared through an axial powder feeding high-energy plasma spraying system. The thermal barrier coating has the characteristics of super thickness (the coating thickness is 600-1200 microns), high bonding strength (gt; 19 MPa) and the like.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Preparation method and application of ceramic slurry for high-temperature bonding of aluminum nitride ceramic

PendingCN121494572ASlurryThermal expansion
The invention provides a preparation method and application of ceramic slurry for high-temperature bonding of aluminum nitride ceramics, and relates to the technical field of high-temperature ceramic materials.The preparation method comprises the following steps that firstly, an organic carrier is prepared, a polymer binder, an organic solvent, a plasticizer and a dispersing agent are weighed according to the weight ratio and stirred at the temperature of 60-70 DEG C till complete dissolution and clarification are achieved for use; 2, an inorganic functional phase is prepared, aluminum nitride powder, yttrium oxide powder and alkaline earth metal oxide powder are weighed according to the weight proportion and placed in a ball milling tank to be evenly mixed, the obtained ceramic slurry serves as a bonding layer, the tolerable temperature can reach 1000 DEG C or above and is far higher than that of metal brazing filler metal, and the ceramic slurry is suitable for severe environments such as aerospace and high-temperature sensors. The main components of the bonding layer are consistent with the base material, and the thermal expansion coefficient is highly matched, so that the thermal stress can be greatly relieved, and the failure of the device caused by thermal fatigue in the temperature cycle is avoided.
Owner:NINGXIA NORTH PORCELAIN NEW MATERIAL TECH CO LTD

A low-thermal-conductivity high-reflectivity five-element co-doped ceramic laser protection coating and a preparation method thereof

The application discloses a kind of low thermal conductivity high reflectivity five-element co-doped ceramic laser protection coating and preparation method thereof, belong to high-energy laser protection technical field.The protective coating includes the adhesive layer and the reflective heat insulation layer of laminated arrangement, adhesive layer is arranged on the surface of base material, reflective heat insulation layer is arranged on the surface of adhesive layer;Wherein, adhesive layer is formed by spraying one of Ni-Al self-bonding powder, Ni-Mo-Al, NiCrAlY, CoCrAlY and NiCoCrAlY;Reflective heat insulation layer is the ceramic coating of five-element co-doped ZrO2, in ceramic coating, base element is ZrO2, doping component is:Y2O3, Gd2O3, Yb2O3, TiO2 And Ta2O5, after doping, material is single cubic phase structure at 25 ℃-1600 ℃.By multiple oxide doping to ZrO2, the coating can maintain cubic phase at room temperature while having lower thermal conductivity and higher reflectivity, can solve the problems of oxidation reflectivity reduction of metal material, mass loss of ablation material and insufficient heat insulation capacity of heat insulation material in laser protection field, prolong service life.
Owner:XI AN JIAOTONG UNIV +1

High-strength low-heat-bridge refrigerator van plate and monitoring method thereof

The invention belongs to the technical field of refrigerator van plates, and particularly relates to a high-strength low-heat-bridge refrigerator van plate which comprises a plate body of a multi-layer composite structure, and the plate body sequentially comprises an outer skin layer, a first bonding layer, a polyurethane rigid foam heat preservation layer, a second bonding layer and an inner skin layer from outside to inside. The polyurethane rigid foam thermal insulation layer is filled with polyurethane glue; a plurality of hollow reinforcing channels extending longitudinally are formed in the polyurethane rigid foam heat preservation layer; the first bonding layer and the second bonding layer are fiber reinforced composite material layers, and the fiber reinforced composite material layers are formed by compounding and curing fiber materials and polyurethane foam. A metal framework is completely replaced by the integrally-formed hollow reinforced channel, a heat conduction path is cut off fundamentally, the heat preservation performance is remarkably improved, and cold chain transportation energy consumption is reduced.
Owner:SHAANXI HEAVY DUTY SPECIAL TRUCK CO LTD

Multi-layer composite board, manufacturing process thereof, refrigerator door body and household appliance shell

The invention provides a multi-layer composite board and a manufacturing process thereof, a refrigerator door body and a household appliance shell, and relates to the technical field of composite materials. The invention provides a multi-layer composite board. The multi-layer composite board comprises a base board, a magnetic sheet and a bonding layer. And the substrate is made of a glass material. And the magnetic sheet is compounded on one side of the substrate and can be attracted with a metal material or a magnetic material. The bonding layer is arranged between the substrate and the magnetic sheet and is used for bonding the substrate and the magnetic sheet; the bonding layer comprises raw material components which can be formed through light curing. The multi-layer composite board provided by the invention has the characteristics of magnetic attraction and corrosion resistance, also has the characteristics of simple process, easiness in manufacturing and low energy consumption, and is relatively high in structural stability.
Owner:HISENSE(SHANDONG)REFRIGERATOR CO LTD

Method for prolonging high-temperature service life of thermal barrier coating of hydrogen-doped gas turbine

The invention provides a method for prolonging the high-temperature service life of a thermal barrier coating of a hydrogen-doped gas turbine. The method comprises the steps that Ni, Co, Cr, Fe, Al, Hf, Si and Y are smelted and cast into master alloy according to the proportion; preparing the mother alloy into high-entropy alloy powder through an inert gas atomization process; high-entropy alloy powder is deposited on the surface of the high-temperature alloy substrate by adopting a high velocity oxy-fuel spraying process, and a bonding layer of the thermal barrier coating is obtained; and preparing a thermal barrier coating on the bonding layer by adopting a plasma spraying process, and carrying out vacuum heat treatment on the thermal barrier coating in advance. The high-entropy alloy bonding layer provided by the invention has better thermal stability, and can still keep strong bonding force between the ceramic layer and the bonding layer alloy after water quenching high-temperature thermal cycle service. And the transition group high-entropy alloy bonding layer is beneficial to formation of a thermal growth oxide layer, has an inhibition effect on diffusion of metal elements and coating degradation in the hydrogen-induced corrosion and high-temperature steam corrosion processes, and can prolong the high-temperature thermal shock service time of the hydrogen-doped gas turbine.
Owner:NANJING INST OF TECH

Thermal barrier coating with composite vertical crack collaborative design and preparation method

The invention relates to a thermal barrier coating with composite vertical crack collaborative design and a preparation method, and belongs to the technical field of thermal barrier coatings. The coating is composed of a nickel-based high-temperature alloy matrix, an MCrAlY bonding layer, a YSZ first ceramic layer and a multi-element rare earth doped zirconium oxide second ceramic layer containing composite vertical cracks. The second ceramic layer is provided with a penetrating type (the depth is 100%) and non-penetrating type (the depth is 60%-80%) composite crack structure, and preparation can be accurately regulated and controlled by optimizing atmospheric plasma spraying process parameters (such as the preheating temperature of a base body, the powder feeding rate and the moving speed of a spray gun) and controlling the process. According to the double-ceramic-layer thermal barrier coating with the composite vertical crack structure, thermal stress release of the coating can be remarkably improved through collaborative design of the crack structure and material optimization, the thermal shock life can be prolonged by nearly two times at the temperature of 1300 DEG C, CMAS molten salt permeation is effectively inhibited, and excellent heat insulation performance and long-term service stability are achieved.
Owner:BEIHANG UNIV +1

Anti-condensation anti-icing self-cleaning coating for high-voltage transmission line and preparation method of anti-condensation anti-icing self-cleaning coating

The invention belongs to the technical field of coating preparation, and provides an anti-condensation and anti-icing self-cleaning coating for a high-voltage transmission line and a preparation method of the anti-condensation and anti-icing self-cleaning coating. After the coating is cured, a bottom coating, a middle functional layer and a surface coating which are sequentially arranged from inside to outside are formed on the surface of a wire, the bottom coating is a hybrid bonding layer composed of silane and inorganic components, and the middle functional layer takes a siloxane elastomer as a continuous phase; the middle layer contains phase change microcapsules, light absorption particles, insulating heat conduction filler, core-shell dielectric particles and a low-surface-energy fluid phase, the dielectric particles are enriched in the interface area of the middle layer and the surface coating, and the surface coating is a low-modulus siloxane elastomer, contains a graded coarse structure formed by hydrophobic modified nano particles and micron particles and contains a low-surface-energy migration component; the coating has the comprehensive performance of condensation resistance, icing resistance and self-cleaning.
Owner:CHANGZHOU TIANRUI NEW MATERIAL TECH CO LTD

Repairing method of high-temperature-resistant environmental barrier coating

PendingCN121494617AInter layerSlurry
The invention relates to the technical field of high-temperature-resistant coatings, in particular to a method for repairing a high-temperature-resistant environmental barrier coating, which comprises the following steps of: pretreating a to-be-repaired area on the surface of a ceramic matrix composite material; the surface to-be-repaired area is coated with prepared bonding layer slurry, curing treatment is carried out, and a first bonding layer is obtained; coating the outer surface of the first bonding layer with the bonding layer slurry, and performing curing treatment to obtain a second bonding layer; the outer surface of the second bonding layer is coated with prepared middle layer slurry, curing treatment is conducted, and a middle layer is obtained; coating the outer surface of the middle layer with prepared surface layer slurry, and performing curing treatment to obtain a surface layer; and carrying out surface heat treatment on the ceramic-based composite material coated with the surface layer to obtain the high-temperature-resistant environmental barrier repair coating. The repairing method of the high-temperature-resistant environmental barrier coating aims at solving the problem that the external field repairing difficulty of the local damaged area of the environmental barrier coating on the surface of the ceramic matrix composite is large.
Owner:AVIC BEIJING AERONAUTICAL MFG TECH RES INST

Method of forming a coating system

A coating system for a turbine engine component is disclosed. The coating system includes a substrate, an optional bond coat, a synthetic oxide layer and a top coat. The synthetic oxide layer is formed by atomic layer deposition and includes two or more oxides.
Owner:RTX CORP

Durable composite anti-corrosion coating for concrete structure of road in cold region and preparation method of durable composite anti-corrosion coating

A durable composite anticorrosive coating for a concrete structure of a road in a cold region belongs to the technical field of building materials, and adopts the specific scheme that the composite anticorrosive coating comprises an inner coating and an outer coating, the inner coating is coated on a concrete base surface, the outer coating is coated on the inner coating, and the outer coating is coated on the outer coating. The inner coating is a single-component epoxy resin interface bonding layer, and the outer coating is a single-component MMA resin sand-containing anti-corrosion layer. Through the composite structure design of the epoxy resin interface bonding layer and the MMA resin sand-containing anti-corrosion layer, the advantages of high permeability and strong bonding characteristics of epoxy resin and the advantages of rapid curing, high wear resistance, wide temperature range (still keeping toughness at-40 DEG C) and good weather resistance of MMA resin are fully played, and the efficient and lasting protection effect is achieved.
Owner:CHINA RAILWAY 19TH BUREAU GRP 3RD +1

Turbine blade outermost abrasive layer using graded ceramics

A turbine blade and related method are disclosed. The blade includes an airfoil body having a radial outermost surface relative to a turbine rotor, a bond coat over the radial outermost surface, and an outermost abrasive layer over the bond coat. The outermost abrasive layer may include a graded oxide ceramic layer or a graded metal ceramic layer. In any event, the outermost abrasive layer is vacuum heat treated to harden the layer, resulting in increased rub and improved clearance between the blade tip, creating a smaller tip gap and lower leakage compared to conventional systems. The heat-treated abrasive layer is also resistant to oxidation at higher temperatures, e.g., greater than 1090° C. (˜2000°F.), caused by the increased use of higher temperature fuels, such as hydrogen. The vacuum heat treatment also results in thermal cycle testing improvements.
Owner:GE INFRASTRUCTURE TECH LLC

Insulating composite ceramic coating with high impact resistance and preparation method thereof

The invention aims to provide an insulating composite ceramic coating with high impact resistance and a preparation method of the insulating composite ceramic coating. The coating is based on nano-agglomerated AlO-3 wt.% TiO composite powder; a double-stage atmospheric plasma spraying process is adopted to directly prepare on a stainless steel substrate under the condition that a metal bonding layer is not prepared in advance: in the first stage, a strong bonding bottom layer is formed at relatively high power, and in the second stage, a nano-structure working layer is constructed at optimized power. In addition, a functional additive accounting for 0.5-3% of the total mass of the powder is externally doped to carry out laser remelting treatment on the coating so as to further densify the coating. Through component compounding and process gradient design, the contradiction that high insulativity and high toughness of the coating are difficult to consider at the same time is successfully solved, and the prepared coating has high hardness, high fracture toughness, high bonding strength and excellent impact resistance and insulation performance; and a long-acting and reliable solution is provided for galvanic corrosion protection of dissimilar metal connecting parts in the marine environment.
Owner:GUANGXI AUTOMOTIVE RES INST

A strain gauge mounting method

The present application relates to the technical field of high-temperature pipeline dynamic stress measurement of an aero-engine, in particular to a strain gauge installation method. The method marks a patch area on a high-temperature pipeline to be measured, and performs surface treatment on the high-temperature pipeline in the patch area. After the treatment, the patch area is coated with primer, and pre-solidification is performed. Secondary coating is performed on the primer to form a bonding layer. The stress gauge is attached to the bonding layer, and the bonding layer is solidified. The glass cloth fixing frame on the stress gauge is removed, and the bonding layer is secondarily solidified. The stress gauge is coated to form a cover layer. The cover layer is finally solidified to achieve the installation of the strain gauge. Through detection, the survival rate of the installed strain gauge reaches 80%, solving the problem of low measurement success rate due to the brittleness and damage of high-temperature strain gauges in the existing high-temperature pipeline dynamic stress measurement process.
Owner:AECC AVIATION POWER CO LTD

Laser clean after diffusion heat treat and prior to shot peen

A method for coating a component of a gas turbine engine includes providing the component having a bond coat and contaminants on a surface of the bond coat; laser treating the surface to remove the contaminants and to produce a cleaned surface on the bond coat; peening the cleaned surface to produce a peened surface on the bond coat, and applying a ceramic coat to the peened surface.
Owner:RTX CORP

Heat insulation-heat dissipation integrated phase change composite material and preparation method thereof

The invention belongs to the technical field of preparation of heat insulation materials, and relates to a heat insulation-heat dissipation integrated phase change composite material and a preparation method thereof. The method comprises the following steps: preparing a thermal insulation layer precursor solution; preparing a heat dissipation layer precursor solution; respectively preparing the heat insulation layer precursor solution and the heat dissipation layer precursor solution to obtain a heat insulation layer aerogel green body and a heat dissipation layer aerogel green body which are not imidized; the preparation method comprises the following steps: uniformly coating a PAA solution on to-be-bonded interfaces of two layers of green bodies, folding the two layers of green bodies, applying pressure on the folding interfaces, carrying out thermal imidization treatment to form integrated polyimide aerogel, immersing a heat dissipation layer into a phase change material, carrying out vacuum impregnation, and cooling to room temperature to obtain the heat insulation-heat dissipation integrated phase change composite material. Through the design of a homogeneous material system and a compact bonding layer, excellent heat insulation and heat dissipation performance is achieved, and the problem of PCM leakage is thoroughly solved. The preparation method is controllable in process, and firm and compact combination between the two layers can be realized.
Owner:TIANJIN CHENGJIAN UNIV

High-temperature-resistant composite heat-absorbing coating with NiCrAlY as bonding layer and preparation process of high-temperature-resistant composite heat-absorbing coating

The invention relates to a solar photo-thermal power generation technology, in particular to a high-temperature-resistant composite heat absorption coating with NiCrAlY as a bonding layer and a preparation process of the high-temperature-resistant composite heat absorption coating, and belongs to the field of solar heat utilization. The preparation method comprises the following steps: firstly, depositing a NiCrAlY coating on a Ni-based high-temperature alloy matrix as a bonding layer through a plasma spraying technology; then, a manganese cobalt oxide spinel heat absorption coating containing polybenzoate is prepared on the NiCrAlY coating again through the plasma spraying technology; and finally, polybenzoate is removed through heat treatment, and the composite heat absorption coating which is good in binding force and has a special shape is formed on the base body. The heat absorption coating has the advantages of being good in process repeatability, controllable in component, suitable for high-temperature long-term service and the like, and the prepared coating has a special shape and has high stability and high absorptivity when being used at a high temperature. The NiCrAlY bonding layer is introduced into a heat absorption coating system, so that the peeling or falling phenomenon caused by the difference of thermal expansion coefficients between the ceramic coating and the alloy can be effectively reduced, and the target of long-term service at high temperature is achieved.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Building wallboard with heat preservation effect

ActiveCN224692963UPhenolformaldehyde foamThermal insulation
The utility model discloses a kind of building wallboards with thermal insulation effect, the utility model includes heat preservation structure, adhesive layer, extruded polystyrene board, aluminium foil composite film, anti-cracking layer and facing layer, heat preservation structure includes the first modified phenolic foam board of setting, the second modified phenolic foam board of a plurality of being placed in the first modified phenolic foam board, screw rod passing through the first modified phenolic foam board and nut being screwed on screw rod, adhesive layer is coated in the right side of first modified phenolic foam board, extruded polystyrene board is bonded in the left side of adhesive layer, aluminium foil composite film is bonded in the left side of extruded polystyrene board, anti-cracking layer is bonded in the left side of aluminium foil composite film, facing layer is bonded in the left side of anti-cracking layer.The utility model can adjust thermal insulation effect according to actual use scene by setting heat preservation structure, extruded polystyrene board and aluminium foil composite film, use range is big, then the attenuation rate of thermal insulation performance can be reduced by breathable waterproof layer and nanometer hydrophobic coating.
Owner:SHANDONG YUNZHUO CONSTR TECH CO LTD

Advanced bond coat material for tbc with improved thermal cycle fatigue resistance and sulphidation resistance

A bond coat material providing unexpectedly high resistance to thermal cycle fatigue and sulfurization and unexpectedly extended thermal cycle life in the high temperature environment of a gas turbine engine component in the presence and absence of sulfur contains: a) 10 to 30 weight percent chromium, b) at least one of tantalum and molybdenum in a total amount of 3 to 15 weight percent, c) 5 to 13 weight percent aluminum, d) 0.1 to 1.4 weight percent silicon, e) 0.1 to 0.8 weight percent yttrium, f) 0 to 1.2 weight percent carbon, g) 0 to 1 weight percent dysprosium, h) 0 to 1 weight percent cerium, i) the balance being nickel, and the percentages of a) through i) adding up to 100 weight percent. The total amount of tantalum and molybdenum and the amounts of aluminum and silicon are each critical to avoid delamination of the top coat from the bond coat.
Owner:OERLIKON METCO (USA) CORP

A modified ni CoCrAlYTa bond coat and method of making the same

The present application relates to the technical field of high-temperature oxidation-resistant coating, and particularly relates to a modified NiCoCrAlYTa bonding layer and a preparation method thereof.The present application adopts low-pressure plasma gas spraying to prepare a NiCoCrAlYTa bonding layer on the surface of a high-temperature alloy substrate, then performs shot peening treatment to reduce the surface roughness of the coating, then performs Al-Cr co-diffusion, and forms a co-diffusion bonding layer with an outer Al-rich layer, an intermediate Cr-rich layer and an inner NiCoCrAlYTa layer, finally performs vacuum pre-oxidation to form a TGO layer on the surface of the co-diffusion bonding layer, thereby obtaining the modified NiCoCrAlYTa bonding layer.The modified NiCoCrAlYTa bonding layer prepared by the present application has excellent high-temperature oxidation resistance and corrosion resistance, and can realize long-time service.
Owner:AECC HUNAN AVIATION POWERPLANT RES INST +2

Acid and alkali resistant anticorrosive coating cable structure

This invention discloses an acid and alkali resistant anti-corrosion coated cable structure, belonging to the field of cable technology. It includes a sheath, with a conductor connected to the inner wall of the sheath. The sheath comprises, from the inside out, an insulation layer, an anti-corrosion base layer, a composite anti-corrosion layer, a reinforcing layer, and a protective layer, arranged coaxially in sequence. The cross-linked polyethylene insulation layer ensures insulation performance. The polytetrafluoroethylene anti-corrosion base layer, combined with an epoxy glass flake + polyurethane composite anti-corrosion layer, forms a double acid and alkali resistant anti-corrosion barrier, effectively isolating corrosive media and preventing coating cracking and peeling, thus solving the problem of poor durability of traditional single-coating anti-corrosion. The aramid fiber reinforcing layer improves the cable's tensile and tear resistance, and the chlorinated polyvinyl chloride protective layer further enhances corrosion and abrasion resistance. The integrally formed anti-slip texture increases laying friction. The tin-plated oxygen-free copper wire stranded conductor has excellent conductivity and strong oxidation resistance. All layers are tightly bonded and sized appropriately, and the adhesive layer enhances interlayer bonding.
Owner:SHENZHEN DONGJIANG CABLE IND CO LTD

High entropy alloy-based compositions and bond coats formed therefrom

A high entropy alloy-based composition is provided that has the formula: (M1aM2bM3cM4dM5eM6f)CrAlY1-x-zZrxMoz where: each of M1, M2, M3, M4, M5, and M6 is a different alloying element selected from the group consisting of Ni, Co, Fe, Si, Mn, and Cu such that none of M1, M2, M3, M4, M5, and M6 are the same alloying element; 0.05≤a≤0.35; 0.05≤b≤0.35; 0.05≤c≤0.35; 0.05≤d≤0.35; 0.05≤e≤0.35; 0≤f≤0.35; a+b+c+d+e+f=1; 0≤x≤1; 0≤z≤1; and 0≤x+z≤1.
Owner:GENERAL ELECTRIC CO

Antiskid antifouling ceramic tile and preparation method thereof

PendingCN121591519AAdhesiveGlaze
The invention relates to the technical field of architectural ceramics, in particular to an anti-skid and anti-fouling ceramic tile and a preparation method thereof.The preparation method comprises the following steps that A, skeleton particles are prepared; b, spraying an acrylate water-based adhesive on the surfaces of the skeleton particles, vibrating and drying to form a bonding layer on the surfaces of the skeleton particles to obtain first intermediate particles; c, immersing the first intermediate particles in wrapping glaze, taking out the first intermediate particles, and sequentially sieving and drying the first intermediate particles to form a wrapping glaze layer on the surface of the bonding layer so as to obtain second intermediate particles; d, the second intermediate particles are subjected to calcination and water quenching treatment in sequence, and anti-skid and anti-fouling dry particles are obtained; and E, uniformly mixing the anti-skid and anti-fouling dry particles with protective glaze to obtain anti-skid and anti-fouling glaze, applying the anti-skid and anti-fouling glaze on the surface of the green body layer to form an anti-skid and anti-fouling glaze layer, drying, and calcining in a kiln to obtain the anti-skid and anti-fouling ceramic tile. According to the anti-skid and anti-fouling ceramic tile and the preparation method thereof provided by the invention, the anti-skid and anti-fouling ceramic tile also has good anti-fouling performance on the premise of ensuring excellent anti-skid performance.
Owner:FOSHAN DONGPENG CERAMIC +4

Electrostatic chuck seal and electrostatic chuck assembly

The present invention relates to an electrostatic chuck seal capable of better sealing a bonding material in an electrostatic chuck and an electrostatic chuck assembly including the electrostatic chuck seal. The electrostatic chuck sealing element is used for sealing an electrostatic chuck which is sequentially provided with a ceramic layer, a first bonding layer, an electrode layer, a heater layer, a second bonding layer and a bottom plate layer from top to bottom. The radial outer surfaces of the first bonding layer, the electrode layer, the heater layer and the bottom plate layer are aligned with each other, an annular first groove is formed on the radial outer side of the radial outer surfaces of the first bonding layer, the electrode layer, the heater layer and the bottom plate layer, and an annular second groove is formed between the first groove and the radial outer surface of the second bonding layer. The electrostatic chuck seal includes: an annular body seal portion for being disposed within the first groove; and an annular protruding portion protruding radially inward from the inner edge of the main body sealing portion for being disposed in the second groove.
Owner:INTEL NDTM AMERICA INC