Composite material for plain bearing elements with an overlay of aluminum-based bearing material
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United States of America Patent
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Nov 27, 1990
Grant Date -
N/A
app pub date -
Feb 23, 1990
filing date -
Mar 1, 1989
priority date (Note) -
Expired
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Abstract
Composite material for plain bearing elements of a type having a metallic backing and an overlay of aluminum-based bearing material applied on the back. The bearing material is a heterogeneous aluminum alloy having a matrix containing in addition to aluminum, nickel, manganese, and copper. There is dispersed within the matrix, segregated tin or segregated lead, in an amount of from 0.5% to 20% by weight in the case of tin. The matrix contains hard particles of nickel, manganese, nickel-manganese, and alloys of nickel-manganese, and are located in the bonding regions between the matrix and the segregated tin or segregated lead. The segregated tin or segregated lead deposits are substantially free of hard particles. The hard particles are substantially of a dimension .ltoreq.5 um. and are present in a quantity of less than 5 hard particles of a dimension .gtoreq.5 um. in a cube-shaped volume element, the edge of which is 0.1 mm. long.
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