| 摘要 |
PURPOSE:To obtain a high strength sintered alloy by mixing specific carbonitride solid solution powder with Fe powder or the like in a specific ratio and by heating and sintering the mixture under specific conditions. CONSTITUTION:The carbonitride solid solution powder (70-97vol%) represented by a formula is mixed with the balance powder of at least one kind among Fe, Co, and Ni to form into a green compact, which is sintered by heating at 1300-1,600 deg.C in 5-100 Torr nitrogen. In the formula, M1 is Ti or Ti and Zr and/or Hf; M2 is at least one kind among V, Nb, and Ta; M3 is W or W and Mo and/or Cr; (X), (Y), and (Z) are mole ratios of M1, M2 and M3, respec tively; (m) and (n) are mole ratios of C and N, respectively; (p) is a total mole ratio of non-metallic elements C and N based on one mole of total metallic elements M1, M2 and M3; and X+Y+Z=1, m+n=1, 0.7<=P<=1, 1.0<=Y<=0.2, 0.05<=Z<=0.5 (X-n), and 0.1<=n<=0.5.
|
