Multi-layered plain bearing

摘要

The invention relates to a multi-layered plain bearing (1) comprising a sliding layer (5) made from a tin-based alloy, which contains between 1 wt. % and 8 wt. % Sb, between 8 wt. % and 20 wt. % Cu and if necessary at least one of the elements Si, Cr, Ti, Zn, Ag and Fe, wherein the proportion of each of these elements is between 0.1 wt. % and 2 wt. %, the total content of all of the alloy elements is a maximum of 30 wt. % and remainder is formed by Sn, wherein at least a proportion of the Cu with Sn is present as a copper-rich deposit in the tin matrix with a maximum particle size of 50 nm and/or in addition contains at least one further element from a second group consisting of Al, Bi and Ni, wherein the proportion of the at least one further element is between 0.1 wt. % and 5 wt. % for each of said elements, and wherein the sliding layer (5), which contains at least one element of the second element group, is deposited by a PVD-method when the particle size of the nanoparticles is greater than 50 nm.

主权项

1. A multi-layered plain bearing with a support layer and a sliding layer,
wherein the sliding layer consists of a tin-based alloy with a tin matrix, wherein the tin-based alloy comprises tin, antimony, and copper, wherein the proportion of antimony is between 1 wt. % and 8 wt. %, wherein the proportion of copper is between 8 wt. % and 20 wt. %, wherein the total content of all alloy elements is a maximum of 30 wt. % and the remainder is formed by tin and manufacturing-related impurities, wherein at least a proportion of the copper forms a copper-rich hard phase with the tin, wherein the copper-rich hard phase is in the form of a deposit in the tin matrix, and wherein the copper-rich hard phase is in the form of nanoparticles with a maximum particle size of 50 nm.