Alumina-coated sintered body

Details Alumina-coated sintered body Alumina-coated sintered body

1995-05-30

1997-10-07

Lusignan, Michael

Coating processes

Coating by vapor, gas, or smoke

Mixture of vapors or gases utilized

4272553, 4272557, C23C 1640

Patent

active

056745648

ABSTRACT:
A sintered hard material body is at least partly coated with at least one 0.5-20 .mu.m wear resistant ceramic oxide coating being <80% thicker in the edges than on the flat surfaces. The oxide coating exhibits a grain size (.O slashed.) in .mu.m for which:

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patent: 5137774 (1992-08-01), Ruppi
patent: 5352494 (1994-10-01), Rousseau
Patent Abstracts of Japan, abstract of JP 1-83662, published Mar. 29, 1989.
V.J. Silvestri et al, "Properties of Al.sub.2 O.sub.3 Films Deposited from the AlCl.sub.3, CO.sub.2 and H.sub.2 System", Journal of the Electrochemical Society, vol. 125, No. 6, 1 Jun. 1978, pp. 902-907.

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