| 摘要 |
PURPOSE:To obtain a bearing for motor having an excellent damping property, strength and wear resistance by compounding reinforced particles consisting of the pulverous particles of lead or zinc coated with copper or tin with a copper sintering alloy and binding the same with the copper or tin powder therein to form a solid solution. CONSTITUTION:At least either of the reinforced particles consisting of the pulverous particles of lead or zinc coated with copper or the reinforced particles consisting of the above-mentioned pulverous particles coated with tin is compounded with the copper sintering alloy which is then sintered at a high temp. of about 750-800 deg.C. The compounding ratio of the reinforcing particles mentioned above is made preferably 1-50wt%. The lead or zinc coated by the above-mentioned method is incorporated at a substantial ratio into the bearing without melted or evaporated even in high-temp. sintering, by which the damping property and wear resistance of the bearing are improved. The coating material of copper or tin binds with the copper powder or tin powder incorporated into the copper sintering alloy to form a bound solid solution structure of the alpha alloy layer having high strength. The strength of the bearing is thus increased.
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