| 摘要 |
PURPOSE:To provide amorphous alloy for biological use excellent in the corrosion resistance, the strength and the formability by constituting the alloy from Zr, Ti, Hf, Pd, Pt and Al which are highly biocompatible at the prescribed ratio. CONSTITUTION:The amorphous alloy for biological use has the composition as indicated by the formula, Zr100-X-Y-ZMXAlYNZ (wherein M is one or more kinds of Ti and Hf or its mixture, N is one or more kinds of Pt and Pd or its mixture, x, y, z are the atm.% respectively to satisfy the inequalities of 0<=x<=40, 2<=y<=45, 2<=z<=55, 20<=x+y+z<=80). When x=0, Ti or Hf is not contained, but these elements improves the strength, the corrosion resistance and the amorphous formability. When the content of Al is below the lower limit, the corrosion resistance and the strength are low, and when the content of Al is above the upper limit, the amorphous formability is deteriorated. When either of the total content of Ti and Hf, that of Pt and Pd, or that of Ti, Hf, Al, Pd and Pt is over the range, the amorphous formability is deteriorated and no amorphous alloy of single phase can be obtained. |
