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Al-Si-Sn Bearing Alloy and bearing composite
| Details |
Inventors: Fukuoka, Tatsuhiko; Kamiya, Souzi; Kanemitsu, Hiroshi;
Assignee: Taiho Kogyo Co., Ltd. (Toyota, JP)
Primary Examiner: Dean; R.
Assistant Examiner:
Attorney, Agent or Firm: Armstrong, Nikaido, Marmelstein & Kubovcik
An aluminum base bearing alloy having outstanding seizure resistance, fatigue resistance and wear resistance is provided. The alloy comprises, in addition to aluminum, 0.5-5 wt. % Si and 1.5-35 wt. % Sn and contains at least 5 nodular Si particles having a diameter of at least 5 .mu.m per 3.56.times.10.sup.-2 (mm).sup.2 of cross-sectional area of the alloy. The bearing alloy may optionally contain at least one additional element selected from Pb, In, Tl, Cd, Bi, Cu, Mg, Cr and Mn. A bearing material is provided by pressure welding the aluminum base bearing alloy to a backing steel sheet. |
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DETAILED DESCRIPTION According to the present invention this and other objects are obtained by providing an aluminum base bearing alloy which contains 0.
5-5 wt.
% Si and 1.
5-35 wt.
% Sn and in which at least 5 particles of Si which have a nodular, or "lumpy", shape and a diameter of at least 5 .
mu.
m are provided per 3.
56.
times.
10.
sup.
-2 (mm).
sup.
2 of cross-sectional area of the bearing alloy.
The bearing alloy of the invention may optionally include up to 8 wt.
% of Pb, In, Tl, Cd or Bi; up to 2 wt.
% of Cu or Mg and up to 1 wt.
% of Cr or Mn for providing other desired properties.
In other embodiment of the invention a bearing material is provided by pressure welding the bearing alloy to a backing steel.
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Manufacturing Materials 
