GLEITSCHICHT

摘要

The sliding layer (4) for a multilayer plain bearing (1) from a tin-based alloy, comprises tin as main alloy element, a further element such as antimony (20 wt.%) and copper (10 wt.%), if necessary lead and/or bismuth (1.5 wt.%), and/or if necessary elements such as zirconium, silicon, zinc, nickel and silver and unavoidable impurities coming from the production of elements. The total portion of copper and antimony is 2 wt.% and the total portion of zirconium, silicon, zinc, nickel and silver is 3 wt.%. The tin bound in the form of intermetallic phase exists with beta-tin grains. The sliding layer (4) for a multilayer plain bearing (1) from a tin-based alloy, comprises tin as main alloy element, a further element such as antimony (20 wt.%) and copper (10 wt.%), if necessary lead and/or bismuth (1.5 wt.%), and/or if necessary elements such as zirconium, silicon, zinc, nickel and silver and unavoidable impurities coming from the production of elements. The total portion of copper and antimony is 2 wt.% and the total portion of zirconium, silicon, zinc, nickel and silver is 3 wt.%. The tin bound in the form of intermetallic phase and free as zinc phase exists with beta-tin grains. The tin grain with beta-tin structure has an average size that has a value in mu m that calculates itself according to a formulae of K=A/(S+3x C+O), where K is the average grain size in mu m, A is a factor, S is the alloy portion in antimony in wt.%, C is the total alloy portion in copper, silver, nickel and oxygen, and the factor A is 100. The average grain size of the arithmetic means is calculated from the value. The tin grain with beta-tin-structure in the tin-based alloy has an average grain size of 2.5-40 mu m that exceeds one-eighth of the layer thickness of the sliding layer. The average grain size of the arithmetic means is from five single values for the largest dimension of the tin grains. The antimony portion is 5-15 wt.% and the copper portion is 0.5-5 wt.%. The lead content and/or bismuth content is 0.2-0.5 wt.%. The lead content is 0.1 wt.%. The zirconium and/or silicon exists in the form of zirconium dioxide- and/or silicon carbide particles in tin based alloy. The zirconium dioxide- and/or silicon carbide particles have an average size of 0.01-1 mu m. Independent claims are included for: (1) a multilayer plain bearing; and (2) a method for the production of a sliding layer.