| 摘要 |
PURPOSE:To obtain the title sintered alloy by specifying the compsn. constituted of Zn, Al, Si, W, Mo, Fe, Ni, Co, O and Cu and forming its structure into the one of which oxide and intermetallic compounds are dispersed. CONSTITUTION:The high strength and high toughness Cu-base sintered alloy has the compsn. contg., by weight, 10 to 40% Zn, 0.3 to 6% Al, 0.1 to 3% Si and/or 0.1 to 3% Mo, 0.1 to 5% of one or more kinds among Fe, Ni and Co and 0.03 to 1% O, furthermore contg., at need, 0.1 to 4% Sn and/or 0.1 to 3% Cr and the balance Cu with inevitable impurities and has the structure of which fine oxide and intermetallic compounds consisting essentially of Al2O3 are uniformly dispersed into a matrix. The alloy has excellent wear resistance and furthermore has excellent synchronizing characteristics for the mating members evaluated by friction coefficient. Thus, the alloy is preferably suitable as the structural member of various apparatus in which miniaturizing, lightening and high outputting are required. |
