Hard coating; a workpiece coated by such hard coating and a meth

Details Hard coating; a workpiece coated by such hard coating and a meth Hard coating; a workpiece coated by such hard coating and a meth

1994-01-26

1995-09-05

Turner, A. A.

Stock material or miscellaneous articles

Composite

Of inorganic material

428699, 428702, 428469, 428472, C23C 1640

Patent

active

054478049

ABSTRACT:
The hard coating includes mainly (Al,Cr).sub.2 0.sub.3 mixed crystals and a chrome content higher than 5 at %. The coating is deposited at a temperature lower than 900.degree. C., preferably lower than 500.degree. C. The hard coating is deposited by a CVD or PVD process.

REFERENCES:
patent: Re31526 (1984-02-01), Smith et al.
patent: 3837894 (1974-09-01), Tucker, Jr.
patent: 3990860 (1976-11-01), Fletcher et al.
patent: 4112148 (1978-09-01), Fonzi
patent: 4357382 (1982-11-01), Lambert et al.
patent: 4495907 (1985-01-01), Kamo
patent: 4540596 (1985-09-01), Nimmagadda
patent: 4668585 (1987-05-01), Tsuji et al.

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