SINTERED BEARING AND METHOD OF MANUFACTURING SAME
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United States of America Patent
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Mar 15, 2016
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Mar 27, 2015
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Provided is a sintered bearing formed mainly of an iron structure (33) and a copper structure (31) which are formed of a partially diffusion-alloyed powder (11) of an iron powder (12) and a copper powder (13). The sintered bearing includes a copper structure (31d) formed of a granular elemental copper powder (13′) having a grain diameter of 45 μm or less, the ratio of the copper structure (31d) being 10 mass % or less. With this, a further increase in strength of the sintered bearing can be realized.
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