Stock material or miscellaneous articles – All metal or with adjacent metals – Having composition – density – or hardness gradient
Patent
1996-04-26
1997-12-30
Zimmerman, John J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having composition, density, or hardness gradient
428627, 428635, 428665, B32B 1500
Patent
active
057028290
ABSTRACT:
The present invention relates to a multilayer material useful as an anti-erosion and anti-abrasion coating, and to a process for producing the multilayer material at low temperatures. The multilayer material comprises a substrate covered with at least one metallic tungsten ductile layer and at least one hard layer of a solid solution of an additional element chosen from carbon or nitrogen or a mixture of carbon and nitrogen in tungsten or a tungsten alloy, the two types of layers ar alternating. The multilayer material is particularly useful as a coating for parts used in aeronautics.
REFERENCES:
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patent: 4419202 (1983-12-01), Gibson
patent: 4761346 (1988-08-01), Naik
patent: 4799977 (1989-01-01), Rausch
patent: 4855188 (1989-08-01), Garg et al.
Patent Abstracts of Japan, vol. 10, No. 90 (C-337) (2147) 8 Apr. 1986 & JP A 60 221 565 (Matsushita Denki Sangyo KK) 6 Nov. 1985.
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Database WPI, Week 5077, Derwent Publications Ltd., London, GB; AN 77-88940Y 50 & JP A 52 130 490 (Mitsubishi Metal MI) 1 Nov. 1977.
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Brun Michel
Ernoult Jacques
Farges Guy
Monge-Cadet Pierre
Paidassi Serge
Commissariat a l''Energie Atomique
L'Etat Francais represente par le Delegue general pour l'Armemen
Turbomeca
Zimmerman John J.
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