Sintered alloy superior in wear resistance
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United States of America Patent
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May 30, 2017
Grant Date -
Dec 4, 2014
app pub date -
Feb 21, 2013
filing date -
Feb 29, 2012
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Abstract
A sintered bearing has a structure in which Ni—P alloy particles having an average diameter of 10 to 100 μm are dispersed in an amount of 1 to 20% by mass in a Cu-based sintered alloy base, a Fe—Cu-based sintered alloy base or a Cu—Ni-based sintered alloy base. The Ni—P alloy particles are derived from a raw material powder comprising 1 to 12% by mass of P; and a remainder composed of Ni and inevitable impurities. The Cu-based sintered alloy base contains no less than 40% by mass of Cu. The Fe—Cu-based sintered alloy base contains no more than 50% by mass of Fe. The Cu—Ni-based sintered alloy base contains 20 to 40% by mass of Ni and 0.1 to 1.0% by mass of P; or contains 10 to 25% by mass of Ni, 10 to 25% by mass of Zn and 0.1 to 1.0% by mass of P.
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