PURPOSE: To provide the surface of the stock of a Ti-Al intermetallic compound with heat resistance and wear resistance by thermally spraying the surface of the stock of a Ti-Al intermetallic compound with the mixed powder of the above Ti-Al intermetallic compound and thermodynamically unstable carbide ceramics.
CONSTITUTION: The surface of stock formed by a Ti-Al intermetallic compound is thermally sprayed with the mixed powder of the above Ti-Al intermetallic compound and carbide ceramics (such as MgC2, SiC and CaC2) thermodynamically unstabler than TiC. In this way, the carbide ceramics act a chemical reaction to form a structure contg. fine TiC and undissolved carbide ceramics, by which the stock suitable for the suction and exhaust valves of an internal combustion engine can be obtd.
TANAKA MASAJI
NIMURA HIROKI
NOGUCHI JUNICHI
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