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BEARING WITH A SURFACE MADE BY REPLACING METAL CARBIDE TO CARBON ON THE SURFACE OF METAL CARBIDE THROUGH CORROSIONS WITH HALOGENS
BEARING WITH A SURFACE MADE BY REPLACING METAL CARBIDE TO CARBON ON THE SURFACE OF METAL CARBIDE THROUGH CORROSIONS WITH HALOGENS
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机译:通过卤素腐蚀使金属碳化物表面上的金属碳化物置换为碳而制成的表面
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摘要
A process for the synthesis of carbon coatings on the surface of metal carbides, preferably SiC, by etching in a halogen-containing gaseous etchant, and optionally hydrogen gas, leading to (he formation of a carbon layer on the metal carbide. The reaction is performed in gas mixtures containing about 0% (trace) amounts to 100% halogen-containing gaseous etchant, e.g., Cl2, and about 0% to 99.9% H2 (hydrogen gas) at temperatures from about 100° C. to about 4,000° C., preferably about 800° C. to about 1,200° C., over any time range, maintaining a pressure of preferably about one atmosphere, to about 100 atmospheres.
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