Journal of the Japan Society of Powder and Powder Metallurgy
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
Sintering of Mechanically Alloyed Copper-Tin-Graphite Powders and Wear Properties
Teruo OhashiEisaku AkamatsuKatsutoshi Morikawa
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JOURNAL OPEN ACCESS

2001 Volume 48 Issue 11 Pages 1011-1019

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Abstract
Sintering of mechanically alloyed copper-tin-graphite powder mixtures was performed in a hydrogen gas stream to provide the wear resistance alloys. An optimum sintering condition which gave about 93% of the calculated density could be satisfied in the temperature range of 773 to 973 K; however, the facility of sintering of these powders was influenced by MA conditions (selection of milling time of metals and graphite powders). A milling time that gave a graphite-coated structure to the milled metal particles led to the difficulty in sintering. The morphology, size and distribution of graphite particles in the sintered matrix could be controlled by a proper selection of MA conditions. Dynamic friction coefficient of the sintered alloys in a dry argon gas was in the range of 0.15 to 0.2, corresponding with the inherent value of the graphite as the solid lubricants.
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