INVESTIGATION OF ZrNi ALLOY POWDER DIRECTLY PRODUCED BY REDUCTION DIFFUSION METHOD

The processes of ZrNi alloy powder directly produced by reduction diffusion method have been investigated,in which mixed powder of ZrO₂ and Ni is used as feed material and Ca as reducing agent.It has been shown that Ca is not only the reductant of ZrO₂,but also the molten agent and carrier material.Metallic Ni is first solved in the molten calcium and then diffused to then surface of reduced metal Zr,and metallized to form ZrNi alloy.So the ratio of calcium is the principle factor of the process.