Aluminium alloy for surfaces which are subjected to extreme stresses due to friction

摘要

The invention relates to an aluminium alloy used as a coating for surfaces subjected to extreme friction stress, with an aluminium matrix incorporating at least a soft phase and a hard phase, as well as a process for producing the coating. The soft phase and/or the hard phase is essentially finely distributed in the aluminium matrix ( 20 ) and at least 80%, preferably at least 90%, of the soft phase or soft phase particles ( 18 ) have a mean diameter of a maximum of 3 mum. The aluminium alloy is produced by depositing it on the base ( 11 ) by a process of deposition from a gas phase.