49 results about "Bond coating" patented technology

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.

The application discloses an electrochemical device and a diaphragm thereof. The diaphragm of the electrochemical device comprises a base film and a coating layer formed on two side surfaces of the base film. The coating layer comprises a ceramic coating layer and a thermal bonding coating layer. The ceramic coating layer and the thermal bonding coating layer formed on the same side of the base film do not coincide with each other. The thermal bonding coating layer formed on one side of the base film does not coincide with the projection of the thermal bonding coating layer formed on the other side of the base film on the base film. After the diaphragm is hot-pressed with an electrode sheet, the electrode can be effectively fixed, so that the production efficiency of a laminated sheet preparation battery cell process is improved. Meanwhile, the diaphragm also has the advantages of low air permeability, high conductivity, simple production process and the like.

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.

Methods, compositions, and composition packages are described for the spray coating of a membrane for waterproofing concrete tunnel applications. After the primer coating is applied to a tunnel surface, the coating composition is sprayed to form a membrane, and then concrete is poured or sprayed against the membrane to bond to it. The coating compositions comprise two or more acrylate monomers, as well as an initiator, an accelerator, and an optional additive. Preferably, the coating composition is prepared using a two-part package, one part containing the initiator, the other the accelerator, and each part containing the monomers and optional additives, so that the two parts can be shipped to the application site and mixed in a 1:1 ratio during spraying.The waterproofing coating composition provides excellent adhesion to concrete.

An improved discontinuous aqueous adhesive coating is disclosed that contains large polymer particles or agglomerates having an average particle size (D50) greater than 5 microns. The coating can be applied to one or both sides of a porous membrane. The method of forming the coating involves applying an aqueous slurry containing large polymer particles having a D50 greater than 5 microns to a porous membrane. The method of application can be a spray method.

The invention discloses a titanium implant surface hydrogen sequential release soft tissue combination promoting coating and a preparation method and application thereof, and belongs to the technical field of dental material preparation. The preparation method comprises the following steps: preparing micro-arc titanium oxide; the preparation method comprises the following steps: synthesizing mesoporous polydopamine nanoparticles (mPDA NPs) through a soft template method; the preparation method comprises the following steps: dissolving AB in an aqueous solution containing mesoporous polydopamine nanoparticles (mPDA NPs), uniformly mixing, carrying out centrifugal treatment, and collecting precipitate, so as to obtain AB-coated mPDA NPs; loading AB (at) mPDA NPs on the surface of micro-arc titanium oxide, and constructing on the titanium surface to obtain a hydrogen release coating HP-Mti, namely the titanium implant surface hydrogen sequential release soft tissue combination promoting coating. Based on the nano confinement effect, the hierarchical nanostructure limits the hydrolysis of AB, thereby prolonging the hydrogen production time. Meanwhile, the water contact angle is reduced due to the loading of the AB-coated mPDA nano-particles, so that the biocompatibility is favorably improved.

The application discloses a surface treatment process of a valve core, adopts tungsten carbide and nickel-based alloy composite design, and remarkably improves the service life of the valve core under extreme environment. By introducing laser quenching treatment, the surface hardness and wear resistance are enhanced, and defects such as cracks are avoided. By adopting plasma spraying technology, the tungsten carbide powder is melted and high-speed sprayed to the surface of the valve core by means of high-temperature plasma flame, a dense, uniform and well-bonded coating is formed, and the wear resistance, corrosion resistance and sealing performance are improved. In addition, the ion nitriding treatment is used to generate a high-hardness nitride layer, forming a "hard shell-tough core" structure, and prolonging the wear resistance life. Finally, the grinding and polishing treatment is used to improve the surface flatness and smoothness, and ensure the sealing reliability. The application combines multiple advanced processes, remarkably improves the comprehensive performance of the valve core, and guarantees the stable operation of the valve under complex and severe working conditions.

Disclosed is a composition comprising: one or more isocyanate functional prepolymers; one or more catalysts for the reaction of isocyanate moieties and active hydrogen containing moieties; one or more mercapto silanes; one or more amino silanes, isocyanato silanes, or mixtures thereof; one or more reinforcing fillers comprising one or more high surface area carbon blacks; one or more untreated calcium carbonates; one or more polyisocyanates having an isocyanate functionality of about 2 or greater; and one or more linear plasticizers. Preferably, the isocyanate functional prepolymers are prepared in the presence of at least a portion of the linear plasticizers. Preferably, the isocyanate functional polymers are prepared in the presence of a malonic acid dialkyl ester. The composition can be a one-part adhesive composition. Also disclosed is a method of applying the composition to a substrate. The composition bonds to difficult to bond coatings, such as coatings prepared from compositions comprising silanized components such as silanized acryloyl polyols or coatings having silica clusters, without primer.

The utility model discloses a novel assembly type damping felt sound insulation heat preservation heat insulation thin type single upper chord single lower chord single web strut muscle laminated board, including truss, the below of truss is provided with fine stone concrete, the below of fine stone concrete is provided with composite carbon fiber net, the below of composite carbon fiber net is provided with nano aerogel bonding coating, the below of nano aerogel bonding coating is provided with damping sound insulation felt, the below of damping sound insulation felt is provided with nano aerogel bonding coating no.

This invention relates to an aqueous one-component thermosetting self-adhesive coating for thin-gauge silicon steel sheets and its preparation method. The aqueous one-component thermosetting self-adhesive coating for thin-gauge silicon steel sheets comprises the following components: modified epoxy resin, modified silica, additives, and deionized water. The modified epoxy resin is obtained by first blending polytetrahydrofuran glycol, sorbitol, and isophorone diisocyanate, and then reacting them with the epoxy resin. The modified silica is obtained by blending silica containing double bonds, isocyanate-modified acrylate monomers containing epoxy groups, and trimethylolpropane triacrylate. The modified epoxy resin of this invention introduces polyurethane and a network structure, which can improve insulation performance, compatibility, and heat resistance. The modified silica of this invention introduces urethane groups, epoxy groups, a network structure, and benzene rings, which can improve compatibility, adhesion, and heat resistance.

The utility model relates to the technical field of ceramic plates, in particular to a high-strength ceramic plate which comprises a ceramic panel, a bonding coating is coated on the surface of the ceramic panel, a reinforcing layer is bonded on the surface of the bonding coating, the reinforcing layer is a carbon fiber layer, a plurality of grooves are formed in the surface of the ceramic panel, and the grooves are communicated with the ceramic panel. The adhesive coating is fixedly connected with the inner wall of the groove, an elastic layer is connected to the side, away from the ceramic panel, of the reinforcing layer in a glued mode, and the elastic layer is an elastic resin layer. According to the utility model, through the arrangement of the reinforcing layer, when external impact occurs, the reinforcing layer made of the carbon fiber material is firstly stressed, and the carbon fiber has higher tensile strength and elasticity modulus and can generate elastic deformation to a certain extent when bearing the impact, so that concentrated impact force can be dispersed to other positions on the ceramic panel; and further, the situation that the ceramic panel is subjected to crack extension and fragmentation due to overlarge local stress is avoided.

The present application provides a secondary battery and an electronic device. The secondary battery comprises an electrode assembly that is of a stack structure; the electrode assembly comprises positive electrode sheets, a separator, and a negative electrode sheet; the positive electrode sheets comprise a double-sided positive electrode sheet and a single-sided positive electrode sheet located on the outermost side of the electrode assembly in a stack direction; the single-sided positive electrode sheet comprises a positive electrode current collector and a positive electrode material layer provided on one surface of the positive electrode current collector, and the positive electrode material layer faces the double-sided positive electrode sheet; the positive electrode material layer comprises a bonding coating area and a non-coating area, the bonding coating area comprises a first binder, the non-coating area comprises a second binder, and the bonding coating area comprises a plurality of sub-areas arranged at intervals. The bonding coating area of the single-sided positive electrode sheet comprises the plurality of sub-areas, so that the problems of curling and wrinkling of the single-sided positive electrode sheet can be mitigated, the wettability of the single-sided positive electrode sheet is improved, the problems of purple spots, lithium precipitation and capacity attenuation of the secondary battery can be mitigated, and the influence on the energy density of the secondary battery is also small.

A bond coating material providing unexpectedly high thermal cyclic fatigue resistance and sulfidation resistance, and unexpectedly prolonged thermal cycle life in high temperature environments of gas turbine engine components with and without the presence of sulfur contains: a) 10% to 30% by weight chromium, b) at least one of tantalum and molybdenum in a total amount of 3% to 15% by weight, c) 5% to 13% by weight aluminum, d) 0.1% to 1.4% by weight silicon, e) 0.1% to 0.8% by weight yttrium, f) 0% to 1.2% by weight carbon, g) 0% to 1% by weight dysprosium, h) 0% to 1% by weight cerium, i) the balance being nickel, and the percentages of a) to i) adding up to 100% by weight. The total amount of tantalum and molybdenum, and the amounts of aluminum and silicon are each critical for avoiding delamination of a top coat from a bond coat.

A coating system and a method of forming the same are provided. The coating system may be disposed on a surface of a substrate. The coating system may include: a bond coat on a surface of a substrate; a thermal barrier coating on the bond coat, the thermal barrier coating defining a plurality of elongate surface connecting voids; and a protective composition disposed in at least some of the plurality of elongate surface connecting voids of the thermal barrier coating. The protective composition may include an oxide or a mixture of oxides including an alkaline earth element and at least one selected from the group consisting of aluminum, gallium, or a combination of aluminum and gallium.

The application discloses a wide-temperature-range self-lubricating inorganic phosphate-based adhesive coating and a preparation method and application thereof, and relates to the technical field of wide-temperature-range lubricating coating. The adhesive coating raw material comprises an aluminum phosphate adhesive and a filler; the filler comprises graphite nanosheets, chromium oxide-doped molybdenum disulfide and mullite whiskers. The aluminum phosphate / oxidized chromium-doped molybdenum disulfide / graphite nanosheet / mullite composite lubricating coating is prepared by adopting the air spraying method with the aluminum phosphate adhesive as a matrix and the graphite nanosheets, the chromium oxide-doped molybdenum disulfide and the mullite whiskers as fillers, and can be applied to the lubrication and protection of key moving parts in aerospace.

A separator, and a preparation method therefor and a use thereof. In the separator, by selecting a wetting agent in a coating, defining the amount of the wetting agent, and defining the proportional relationship between the particle size D of PMMA particles and the thickness H of a coating base layer, the breakdown strength of the separator is enhanced, and the influence of the wetting agent on the insulating performance of the separator is avoided. Compared with a conventional separator in which a base film, a heat-resistant coating and an adhesive coating are applied multiple times in a layered manner, by means of mixed application of inorganic particles and large PMMA particles, the coating is simplified, the bonding and heat resistance requirements on the coating are satisfied, the production cost of the separator is reduced, and there is no higher requirement on a production device.

The invention provides a preparation method of a composite diaphragm, a secondary battery and an electric device. The composite diaphragm comprises a base membrane and an adhesive coating, wherein the adhesive coating comprises a plurality of gel points which are arranged at preset intervals. And the gel point is subjected to volume swelling after absorbing the electrolyte, so that a space is effectively expanded between the base film and the negative pole piece, a space is reserved for metal deposition in advance, volume expansion caused by metal deposition on the negative pole piece in the charging and discharging process of the secondary battery is relieved to a certain extent, and the capacity and the cycle life of the battery are effectively improved.

Methods for forming a sintered bond coat (64) on a silicon-based substrate (14) and articles (50) formed by the methods are disclosed. The methods include applying a bond coat slurry on the silicon-based substrate (14), drying the bond coat slurry on the silicon-based substrate to form a dried bond coat (44), and sintering the dried bond coat (44) in an oxidizing atmosphere to form a sintered bond coat (64) on the silicon-based substrate (14). The bond coat slurry includes a bond coat patching material in a bond coat fluid carrier. The articles (50) include a silicon-based substrate (14), a sintered bond coat (64) formed on the silicon-based substrate (14), and a sintered environmental barrier coating (EBC) (66) formed on the sintered bond coat (64). The sintered bond coat (64) includes a silicon-based phase and an oxide of the silicon-based phase.

A method of reducing depletion of elements from an airfoil includes disposing a bond coating on the airfoil, where the airfoil comprises cooling channels. The airfoil includes a material that has an initial composition. A cooling hole is machined in the airfoil to contact the cooling channels such that a fluid travelling in the cooling channel may be discharged via the cooling hole. The machining of the cooling hole results in a formation of a depleted region around the cooling hole. The depleted region is depleted of a portion of the initial composition of the airfoil. A top coat is disposed on the bond coat. The airfoil is subjected to a heat treatment at a temperature effective to promote diffusion of elements from a non-depleted region to the depleted region around the cooling hole.

The invention discloses a preparation method of a cement-based waterproof roll, which comprises the following steps: step 1, preparation of mortar layer slurry: mixing raw materials, and carrying out vacuum degassing to obtain polymer modified cement mortar slurry; 2, forming a reinforcing layer and a waterproof layer, weaving a high-strength polyester fabric as the reinforcing layer, and coating the two sides of the reinforcing layer with a thermoplastic polyolefin waterproof material to form the waterproof layer; step 3, bonding and coating: uniformly blade-coating the surface of the sandwich prefabricated body obtained in the step 2 with an asphalt adhesive to form a bonding layer; 4, composite rolling is conducted, specifically, the bonding layer is coated with the polymer modified cement mortar slurry in a blade coating mode, and a coiled material is formed through rolling; (5) curing and curing: transferring the roll formed by rolling in the step (4) to a high-temperature curing chamber for curing; sixthly, cooling and rolling are conducted, specifically, the coiled material is cooled to the room temperature and then rolled after being dried through hot air; the sandwich prefabricated body formed by the high-strength three-dimensional polyester fabric and the double-sided thermoplastic polyolefin waterproof layer provides core waterproof and enhancing functions.

The invention discloses a cement concrete bridge deck waterproof bonding coating and a preparation method thereof, and belongs to the technical field of high polymer materials. According to the invention, the problems of how to prevent the waterproof bonding coating from bonding wheels in concrete bridge deck pavement, improve the bonding waterproof performance of the waterproof bonding coating and shorten the curing time are solved. The preparation raw materials comprise emulsified asphalt, neoprene latex and water-based tackifying resin, and the mass ratio of the emulsified asphalt to the neoprene latex to the water-based tackifying resin is (45-55): (40-50): (5-10). The emulsified asphalt is obtained by taking a mixture of heavy traffic petroleum asphalt and hard asphalt as a matrix and modifying the matrix through low-density polyethylene and a cationic emulsifier. According to the invention, the bonding, waterproof, durable, quick-cracking and quick-setting properties and the like of the waterproof bonding coating for the cement concrete bridge floor are improved from multiple aspects.

The present application belongs to the technical field of pipeline corrosion. Disclosed are an anti-falling high-temperature-corrosion-resistant coating and material, and a preparation method therefor and the use thereof. In the anti-falling high-temperature-corrosion-resistant coating material disclosed in the present application, V, Ta and Mo are doped into Cr and Al to generate lattice expansion of different degrees, which facilitates improving the phase structure stability of a coating, thereby enhancing the oxidation resistance. In addition, all the elements works synergistically with Cr, thereby improving the thermal stability of the whole structure and significantly improving the oxidation resistance of the coating in a high-temperature steam environment. Moreover, the coating material can form a metallurgically bonded coating on the surface of a substrate, thereby significantly improving the bonding force between the coating and the substrate. When the coating material serves in a high-temperature steam environment, the oxidation resistance thereof can be significantly improved, thereby solving the problem of an existing coating being prone to falling off.

A coated component and a method of forming the same are provided. The coated component includes a silicon-containing substrate having a surface, a bond coat on the surface of the silicon-containing substrate, and an environmental barrier coating on the bond coat. The bond coat includes a silicon-based matrix having a dispersion of reinforcing phase therein. Upon oxidation of the bond coat, a TGO layer is formed, the TGO layer including a dispersion of alumino-silicate based crystals in a silicate-based oxide matrix.

A turbine blade and related methods are disclosed. The blade includes: an airfoil body having a radially outermost surface with respect to a turbine rotor; a bond coat on the radially outermost surface; and an outermost abrasive layer, the outermost abrasive layer being on the bond coat. The outermost abrasive layer may include a gradient oxide ceramic layer or a gradient cermet layer. In any case, the outermost abrasive layer is vacuum heat treated to harden the layer, resulting in increased friction and improved clearance between blade tips, resulting in smaller tip voids and lower leakage compared to conventional systems. The heat treated abrasive layer also resists oxidation at higher temperatures (e.g., greater than 1090 DEG C (about 2000 DEG F)) caused by increasingly using higher temperature fuels (such as hydrogen). Vacuum heat treatment also results in an improvement in thermal cycle testing.

A method of repairing a coating on an article according to an exemplary embodiment of this disclosure, among other possible things includes defining a work area surrounding a discontinuity in the coating, the coating including undisturbed bond coat and undisturbed top coat; removing coating material within the work area; applying a slurry containing bond coat constituents in a carrier fluid to the work area; curing the slurry to form a repaired bond coat; applying a slurry containing top coat constituents in a carrier fluid to the work area; and curing the slurry to form a repaired top coat. A method of repairing a coating on an article and an article are also disclosed.

The application relates to a pressure module bonding coating method, which comprises the following steps: in step one, a ceramic base containing a circuit layer and a ceramic diaphragm containing a circuit layer are connected through a bonding layer, via holes on the ceramic base are aligned with connecting contact positions of the ceramic diaphragm, the bonding layer does not cover the connecting contacts, and the upper end of the via hole on the ceramic base is subjected to a metallization treatment to form a metal covering layer; in step two, conductive paste with fluidity is injected into the via hole to form a conductive layer on the surface and the bottom of the via hole, and the metal covering layer is connected with the connecting contacts through the conductive layer; and in step three, heating is conducted through a heating device to solidify the conductive layer, so that the circuit layers attached to the ceramic base and the ceramic diaphragm are connected. The application has the effects of reducing paste injection and explosion, realizing safe and reliable coating, and reducing cost.

The application discloses a preparation method of metal particles with core-shell structure, which comprises the following steps: preheating inert gas flow loaded with high-melting-point metal powder, and then passing into flowing low-melting-point metal vapor to make the low-melting-point metal condense on the surface of the high-melting-point metal powder to form a low-melting-point metal shell layer; the temperature of the low-melting-point metal vapor is T1, the preheating temperature is T2, T1>T2, and the difference between T1 and T2 is 50-200 DEG C. In the preparation method, the gas flow loaded with low-temperature high-melting-point metal powder is passed into the flowing high-temperature low-melting-point metal vapor; due to the temperature difference and the flowing state of the low-melting-point metal vapor, the low-melting-point metal can quickly condense on the surface of the high-melting-point metal, so that a uniform, composition-unsegregated and well-bonded coating layer is formed on the surface of the high-melting-point metal powder, and the mechanical properties of the composite material made of the metal particles with core-shell structure are improved.

A mould element (such as mould core) for casting metal is made by a process that starts with a coated mould element having a coating (such as a core coating). The coated mould element is provided with a further coating and a bond coating on the further coating, the bond coating allowing the further coating to attach to a metal casting made with the mould element, such as a cast housing for a turbomachine.

The utility model discloses a novel assembly type damping felt sound insulation heat preservation and thermal insulation thin type single upper chord double lower chord single web strut muscle laminated board, including truss, the below of truss is provided with fine stone concrete, the below of fine stone concrete is provided with composite carbon fiber net, the below of composite carbon fiber net is provided with nano aerogel bonding coating, the below of nano aerogel bonding coating is provided with damping sound insulation felt, the below of damping sound insulation felt is provided with nano aerogel bonding coating no.

Coated components are provided that include a substrate having a surface; a bondcoat over the surface of the substrate; a thermally grown oxide layer over the bondcoat; and an environmental barrier coating over the thermally grown oxide layer. The bondcoat includes a plurality of core-shell particulates and a plurality of oxide-sintering aid globular phases dispersed within a metalloid-based material matrix. The plurality of core-shell particulates have a shell comprising a metalloid oxide around a core comprising a metalloid-based material. The plurality of oxide-sintering aid globular phases includes a mixture of the metalloid oxide and a sintering aid.