Patent ID: 7166254
Filing Date: 2007-01-23
Classification: B22F,C22C

Abstract:
1. A process for producing a sintered aluminum alloy comprising the steps of preparing a powder mixture of at least rapidly solidified Al-Si powder, Al powder and Cu powder or Cu alloy powder; compacting said powder mixture into a green compact of predetermined configuration; and sintering said green compact and, if necessary, further subjecting it to heat treatment, wherein the maximum particle size of said Al powder is 100 μm or less and the average particle size of said Al powder is in the range of 45 to 75 μm and the particle size distribution of said Al powder is: 45 μm or less: 10 to 30 percent by mass, 45 to 75 μm: 35 to 65 percent by mass, and 75 μm or more: 15 to 35 percent by mass.