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270 results about "Bond coating" patented technology

Bond coating is a technological breakthrough that solves the problem of bonding rubber to switches made of polyester. Before bond coating, keypads and switches were bonded mechanically, which is a far more expensive and time consuming method.

Method and apparatus for dispersion strengthened bond coats for thermal barrier coatings

A directed vapor deposition (DVD) method and system for applying at least one bond coating on at least one substrate for thermal barrier coating systems. The method and system provides for alloy strengthening in high temperature metallic alloys that can be melt or solid state processed to materials that one applies by vapor deposition. The creep strengthened coating contains nanoscopic particles of oxides, nitrides, borides, carbides, and other materials which are formed by reactive codeposition. An approach for reactive codeposition is plasma assisted directed vapor deposition. Accordingly, the resultant structure may be utilized for, but not limited thereto, high temperature coatings, e.g. for protecting rocket or power turbines, or diesel engine components. The resultant structure is has a greatly extended lifetime attributed in part to the elimination of coating spallation by the “rumpling” mechanism.
Owner:UNIV OF VIRGINIA ALUMNI PATENTS FOUND

Annealing furnace roller surface peening coating and method for making same

The invention relates to a strengthening coating of the surface of an annealing furnace roller and a preparation method thereof. The preparation of the strengthening coating on the surface of a roller base is performed by a selected hot-spray method. The strengthening coating comprises a bonded coating, a working coating and a transition coating between the bonded coating and the working coating. The proportion of alloy and ceramic in every coating is changed according to gradient, which means that the proportion of alloy is decreased gradually from inner to outer in every coating; while the proportion of ceramic is increased gradually and at last a gradient coating is formed. The invention not only ensures the working coating to have good antioxidation, abrasion resisting and anti- nodulation performances, but also improves the binding performance of strengthening coating and the roller base and improves the cohesion binding performance of the coating inner. Under the function of the strengthening coating of the annealing furnace roller surface made by the method of the invention, the service life of the furnace roller can be prolonged and the using cost and repairing cost can be decreased.
Owner:常州杰耐机械有限公司

Thermal barrier coating material

The present invention relates to a thermal barrier coating material having the chemical composition of (1−n)CeO2-nZrO2-0.5R2O3, where n is in the range of 0.9≧n≧0 and R is selected from a group consisting of Nd, Sm, Eu, Gd, Tb and combinations of at least two among them. It possesses a thermal expansion coefficient higher than 12×10−6 K−1 from ambient temperature up to 1200° C. and superior to those of the presently widely-used thermal barrier coating materials. Even if it is subjected to long time calcinations at 1400° C. or is quenched to room temperature, it can still maintain the stable crystal structure. In addition, its thermal expansion trend matches quite well with that of the bond coating alloy. This is beneficial to the elimination of thermal stress generated between the substrate and the ceramic top coating during the thermal cycle and can significantly improve the thermal shock resistance of the coating. The present invention further relates to a method for producing a thermal barrier coating material and a method for preparing a thermal barrier coating.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Method for preventing corrosion and marine creature fouling on ship propeller

The invention relates to a method for preventing corrosion and marine creature fouling on a ship propeller. Cathode protection, a ceramic insulating coating and a metallic antifouling coating are organically combined in the method. The method comprises the following steps of: removing scales on the surface of the copper alloy propeller, obtaining a uniform and rough surface, and spraying a metallic adhesive coating by adopting a thermal spraying method; preparing a metallic oxide ceramic insulating coating on the surface of the adhesive coating by adopting the thermal spraying method, wherein the ceramic insulating coating comprises single-component oxides such as Al2O3, Cr2O3 and the like and multi-component composite powder of TiO2 or SiO2 with low melting point; preparing the metallic antifouling coating on the ceramic insulating coating, wherein the metallic antifouling coating is made of pure copper or copper alloy with antifouling function; and meanwhile, performing cathode protection on the propeller. The ceramic and the metallic coating adopted in the method have higher bonding force and longer protection life, the current requirement of the ship cathode protection is reduced, the corrosion and marine creature fouling problems of the ship propeller can be simultaneously solved, and the ceramic and the metallic coating have obvious corrosion resistance and antifouling effect.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Method for repairing coated components using NiAl bond coats

According to an embodiment of the invention, a method for repairing a coated high pressure turbine blade, which has been exposed to engine operation, to restore coated airfoil contour dimensions of the blade, and improve upon the prior bond coat is disclosed. The method comprises providing an engine run high pressure turbine blade including a base metal substrate made of a nickel-based alloy and having thereon a thermal barrier coating system. The thermal barrier coating system comprises a diffusion bond coat on the base metal substrate and a top ceramic thermal barrier coating comprising a yttria stabilized zirconia material. The top ceramic thermal barrier coating has a nominal thickness t. The method further comprises removing the thermal barrier coating system, wherein a portion of the base metal substrate also is removed, and determining the thickness of the base metal substrate removed. The portion of the base metal substrate removed has a thickness, Δt. The method also comprises applying a β phase NiAl overlay coating to the substrate, and determining the difference in thickness, Δx, between the β phase NiAl overlay coating and the previously removed bond coat. The method further comprises reapplying the top ceramic thermal barrier coating to a nominal thickness of t+Δt−Δx, wherein Δt compensates for the portion of removed base metal substrate. Advantageously, the coated airfoil contour dimensions of the high pressure turbine blade are restored to about the coated dimensions preceding the engine run.
Owner:GENERAL ELECTRIC CO
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