Invention Grant
- Patent Title: Wear resistant lead free alloy bushing and method of making
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Application No.: US14223513Application Date: 2014-03-24
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Publication No.: US09657777B2Publication Date: 2017-05-23
- Inventor: David Saxton , James Carpenter , Gregory Sevenski , Holger Schmitt , Gerd Andler
- Applicant: Federal-Mogul Corporation
- Applicant Address: US MI Southfield
- Assignee: Federal-Mogul LLC
- Current Assignee: Federal-Mogul LLC
- Current Assignee Address: US MI Southfield
- Agency: Dickinson Wright, PLLC
- Agent Robert L. Stearns
- Main IPC: B22F7/08
- IPC: B22F7/08 ; F16C33/14 ; C22C1/04 ; C22C9/02 ; C22C32/00 ; F16C33/12

Abstract:
A bearing having improved wear resistance has a bearing material of a copper-tin-bismuth alloy which may also include phosphorus which has excellent strength, due to the solid solution of copper, tin and phosphorus (when used), attached to a steel backing shell. The material also has good lubricity as a result of the presence of the bismuth which also promotes tin mobilization and formation of a layer of tin on the bearing surface upon use of the bearing. The addition of small amounts of relatively small hard particles in the copper-tin-matrix, particularly Fe3P, MoSi2 or a mixture thereof, provides a suitable hard surface artifact to improve the wear resistance of the bearing material. The bearing includes a sintered powder compact bearing material of a copper-tin-bismuth alloy powder and a metal compound powder which is bonded to a steel backing shell, wherein the metal compound powder has an average particle size of less than 10 μm.
Public/Granted literature
- US20140272128A1 WEAR RESISTANT LEAD FREE ALLOY BUSHING AND METHOD OF MAKING Public/Granted day:2014-09-18
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