Bearing element

Abstract

The invention describes a lining made from an alloy with a silver or copper base for a bearing element. Silver or copper form the matrix including impurities that are unavoidable from the production of these metals and bismuth is contained in an amount selected from a range with a lower limit of 2 wt. % in the case of silver or 0.5 wt. % in the case of copper and with an upper limit for both of 49 wt. %.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding of the invention the latter is explained in more detail with reference to the following examples.

FIG. 1 shows the wearability of various linings.

Claims

1. Lining made from an alloy with a silver or copper base for a bearing element, wherein silver or copper form the matrix, including the impurities that are unavoidable from the production of these metals, and bismuth is contained in an amount selected from a range with a lower limit of 2 wt. % in the case of silver or 0.5 wt. % in the case of copper and an upper limit for both of 49 wt. %.

2. Lining according to claim 1, wherein it contains bismuth in an amount selected from a range with a lower limit of 10 wt. % and an upper limit of 30 wt. %.

3. Lining according to claim 1, wherein hard particles are contained in the alloy with a grain size selected from a range with a lower limit of 10 nm and an upper limit of 100 nm.

4. Lining according to claim 2, wherein the hard particles are selected from a group comprising oxides, carbides, nitrides, such as e.g. titanium dioxide, zirconium dioxide, aluminium oxide, tungsten carbide, silicium nitride and also diamond and mixtures of at least two different materials.

5. Lining according to claim 2, wherein the proportion of hard particles relative to the Ag/Bi or Cu/Bi alloy is selected from a range with a lower limit of 0.05 vol. % and an upper limit 5 vol. %.

6. Bearing element, in particular a sliding bearing, comprising a support element, a lining and a bearing metal layer arranged in between, wherein the lining is formed according to claim 1.