Multi-layer material with an anti-erosion, anti-abrasion, and an

Details Multi-layer material with an anti-erosion, anti-abrasion, and an Multi-layer material with an anti-erosion, anti-abrasion, and an

1998-05-29

2000-12-12

Jones, Deborah

Stock material or miscellaneous articles

All metal or with adjacent metals

Having composition, density, or hardness gradient

428627, 428629, 428651, 428472, 4284722, B32B 900, B32B 1500, C25D 1102

Patent

active

061596183

ABSTRACT:
This invention relates to a multi-layer material that comprises a substrate made of aluminum, magnesium or their alloys, having possibly been subjected to a surface treatment, this substrate being provided with a coating comprising a tungsten based deposit and an under-layer--inserted between said substrate and said deposit--of a material having mechanical and thermo-mechanical properties intermediate to those of said substrate and said deposit. This under-layer is made up of at least one layer of a material chosen from among chromium, molybdenum, niobium, titanium, zirconium, their nitrides and carbides, solid solutions of carbon and of nitrogen in said metals, and steels and greatly improves the adherence of said coating to said substrate.
The invention also relates to the anti-erosion, anti-abrasion, anti-wear coating comprising said tungsten based deposit and said under-layer.

REFERENCES:
patent: 4761346 (1988-08-01), Naik
patent: 4855188 (1989-08-01), Garg et al.
patent: 5547767 (1996-08-01), Paidassi et al.
patent: 5702829 (1997-12-01), Paidassi et al.

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