Patent ID: 7261758
Filing Date: 2007-08-28
Classification: B22F,B23P,C22C

Abstract:
1. A Ni-based sintered alloy used for preparing a high temperature part, prepared by mixing and heating two kinds of Ni alloy powders differing from each other in the melting point; wherein the Ni-based sintered alloy is the two kinds of Ni alloy powders consist of a high melting point Ni alloy powder, having a melting point higher than the heating temperature in carrying out a sintering treatment, and a low melting point Ni alloy powder, having a melting point lower than the heating temperature in carrying out the sintering treatment, and wherein MGA1400 constitutes the Ni-based alloy used as the base material of the high temperature part, the high melting point Ni alloy powder has a composition in weight percentage of Ni-10 to 20 Cr-0 to 7 Co-0 to 2 Mo-0 to 9 W-0 to 3 Ta-0.0 to 0.3 C-0.00 to 0.03B, and the low melting point Ni alloy powder has a composition in weight percentage of Ni-3 to 13 Cr-14 to 24 Co-1.5 to 7.5 Mo-0.5 to 11 W-5 to 9 Ta-4 to 9 Ti-7.5 to 11.5 Al-0.00 to 0.02 C-0.5 to 3.5B.