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AssigneeKomatsu Ltd.
InventorsTakemori Takayama, Tetsuo Ohnishi, Yoshikiyo Tanaka, Keiichi Maeda, Kan'ichi Sato
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With the objectives of alleviating the property of attacking on the mating member by scratching-off of local agglutinates on the sliding contact surface, achieving improved wear resistance, and achieving improved seizure resistance through restraint of frictional heat generation by a hard phase, a copper based sintered contact material contains shock-resistant ceramics in an amount of 0.05 to less than 0.5 wt % as non-metallic particles composed of one or more substances selected from pulverized oxides, carbides and nitrides. The shock-resistant ceramics are comprised of SiO2 and/or two or more substances selected from SiO2, Al2O3, LiO2, TiO2 and MgO.
A copper based sintered contact material, wherein one or more intermetallic compounds, each of which comprises two or more elements selected from the group consisting of Cu, Sn, Ca, Mn, Cr, Mo, W, Sb and Te, are dispersed, wherein the amount of said one or more intermetallic compounds is 0.1 to 10% by volume, and wherein the copper based sintered contact material further contains 12 to 16 wt % Sn and a Cu—Sn compound phase which is dispersedly precipitated in the structure thereof.
Dependencies are inferred from the claim text.