| 摘要 |
PROBLEM TO BE SOLVED: To refine the crystal grains of the material, thereby to improve its mechanical properties as an alloy, i.e., to increase its hardness and tensile straight and to improve the wear resistance thereof by adding an alloy material composed of, by weight, 60 to 70% Ag, 1 to 15% Pd and 14.5 to 38.9% Cu with at least one kind of Ti and Zr by 0.01 to 0.5%. SOLUTION: An alloy material composed of, by weight, 60 to 70% Ag, 1 to 15% Pd and 14.5 to 38.9% Cu is mixed with at least one kind of Ti and Zr by 0.01 to 0.5%, and, moreover, an alloy material composed of 60 to 70% g, 1 to 15% Pd and 14.5 to 38.9% Cu is mixed with at least one kind of Ti and Zr by 0.01 to 0.5% and is furthermore mixed with at least one kind of Ga and Ge by 0.1 to 2.0%.
|
