Stratified composite material for sliding elements and method for the production thereof
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United States of America Patent
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Mar 25, 2003
Grant Date -
N/A
app pub date -
May 3, 2001
filing date -
Nov 13, 1998
priority date (Note) -
Expired
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Abstract
A method is described for producing composite multilayer materials which exhibit optimum properties throughout their entire service life. The composite multilayer material comprises a backing layer, a bearing metal layer, an intermediate layer and an electrodeposited overlay, which exhibits a hardness which increases continuously from its surface in the direction of the bearing metal layer. The method provides for the electrodeposition as overlay of a lead-free alloy with at least one hard and one soft component, the current density being modified within the range of from 0.3 to 20 A/dm.sup.2 during the deposition process and/or the temperature of the electroplating bath being modified within the range of from 15.degree. C. to 80.degree. C.
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