Aluminium alloy for tribologically stressed surfaces

Abstract

Aluminum alloy for coating tribologically stressed surfaces comprises soft and hard phases dispersed in an aluminum matrix, where the hard phase comprises one or more elements E1 or carbides, silicides, nitrides or borides of E1 or intermetallic compounds of E1 or intermetallic compounds of aluminum and E1 and the soft phase comprises one or more elements E2. The average particle diameter of the soft phase is no more than 3 mu m. Aluminum alloy for coating tribologically stressed surfaces comprises soft and hard phases dispersed in an aluminum matrix, where the hard phase comprises one or more elements E1 (chromium, iron, cobalt, copper, manganese, nickel, molybdenum, magnesium, niobium, platinum, scandium, silver, silicon, vanadium, tungsten, zirconium) or carbides, silicides, nitrides or borides of E1 or intermetallic compounds of E1 or intermetallic compounds of aluminum and E1 and the soft phase comprises one or more elements E2 (silver, aluminum, gold, bismuth, graphite, calcium, copper, indium, magnesium, lead, palladium, platinum, scandium, tin, yttrium, zinc, lanthanides). The soft phase and / or hard phase is finely dispersed in the aluminum matrix and at least 80% of the soft phase has an average particle diameter of no more than 3 mu m. Independent claims are also included for: (1) coating comprising an aluminum alloy as above; (2) composite material comprising a substrate and a coating as above; (3) producing the composite material by depositing the alloy from a gas phase onto the substrate.

Description

technical field [0001] The invention relates to an aluminum alloy for coating surfaces subjected to frictional loads, the aluminum alloy having an aluminum matrix into which at least one soft phase and one hard phase are added. Wherein, the hard phase is composed of at least one element in the first element group and / or carbides, silicides, nitrides, and borides of elements in the first element group, and the first element group includes chromium, iron, cobalt , copper, manganese, nickel, molybdenum, magnesium, niobium, platinum, scandium, silver, silicon, vanadium, tungsten, zirconium elements; or by the intermetallic combination of elements in the first element group and / or by aluminum and the first element and the soft phase is composed of at least one element of a second element group comprising silver, aluminum, gold, bismuth, carbon (graphite), calcium, copper, Indium, magnesium, lead, palladium, platinum, scandium, tin, yttrium, zinc and lanthanides, in which the soft ...

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Problems solved by technology

Traditional plain bearings cannot meet such load requirements

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