Wear resistant coating for sharp-edged tools and the like

Details Wear resistant coating for sharp-edged tools and the like Wear resistant coating for sharp-edged tools and the like

1989-03-07

1990-08-07

Watts, Douglas D.

Cutlery

Blades

Metallurgical feature

761041, B26B 900

Patent

active

049456407

ABSTRACT:
A method is described for improving the erosion and abrasion resistance of a sharp edged metal structure. A base layer of a noble metal is formed on the surface of the body of the structure followed by a chemical vapor deposited outer coating comprising a mixture of tungsten and tungsten carbide. The tungsten carbide is selected from the group consisting of W.sub.2 C, W.sub.3 C, and mixtures thereof and is fine grained, non-columnar and having a substantially layered microstructure. Also described is a sharp edged metal structure formed by the method.

REFERENCES:
patent: 3368914 (1968-02-01), Darnell et al.
patent: 3389977 (1968-06-01), Tarver
patent: 3496973 (1970-02-01), Ballard
patent: 3574672 (1971-04-01), Tarver
patent: 3721577 (1973-03-01), Woerner
patent: 3814625 (1974-06-01), Lewin et al.
patent: 3911579 (1975-10-01), Lane et al.
patent: 4008976 (1977-02-01), Holzl
patent: 4162345 (1979-07-01), Holzl
patent: 4427455 (1984-01-01), Schepper

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