US 5,204,191 A · Coating materials for metal alloys and metals and method

Abstract

The invention relates to materials for coating metal alloys or metals, which materials are intended to improve the performance of said alloys or metals. These materials have a composition which corresponds to the general formula Al.sub.a Cu.sub.b Fe.sub.c X.sub.d I.sub.e, wherein X represents one or more elements chosen from V, Mo, Ti, Zr, Nb, Cr, Mn, Ru, Rh, Ni, Mg, W, Si and the rare earths, and I represents the inevitable manufacturing impurities, e.ltoreq.2, 14.ltoreq.b.ltoreq.30, 7.ltoreq.c.ltoreq.20, O.ltoreq.d.ltoreq.10, with c+d.ltoreq.10 and a+b+c+d+e=100% of the number of atoms, and they contain at least 40% by mass of an icosahedral quasi-crystalline phase and/or a decagonal quasi-crystalline phase and have a grain size greater than 1,000 nm in the quasi-crystalline phase. These materials are useful, in particular, for coating copper, aluminium alloys or copper alloys in the manufacture of cooking utensils, anti-friction bearings, anti-wear surfaces and reference surfaces.

Claims23

Dependent claims

An aluminium alloy coating material comprising a composition

(a) having the general formula Al.sub.a Cu.sub.b Fe.sub.c X.sub.d I.sub.e wherein X represents one or more elements chosen from V, Mo, Ti, Zr, Nb, Cr, Mn, Ru, Rh, Ni, Mg, W, Si and the rare earths, I represents the inevitable manufacturing impurities, e.ltoreq.2, 14b.ltoreq.30, 7.ltoreq.c.ltoreq.20, 0.ltoreq.d.gtoreq.10, with c+d.gtoreq.10 and a+b+c+d+e=100% of the number of atoms;
and
(b) containing at least 40% by mass of a quasi-crystalline phase,
wherein the mean grain size of the crystallites in the crystalline phase is greater than 1000 nm.

1 more element

Dependencies are inferred from the claim text.

Coating materials for metal alloys and metals and method

Life of this patent

Coating materials for metal alloys and metals and method

Life of this patent

Abstract

Claims23