摘要
对以Ｃａ作还原剂、ＺｒＯ２粉末和Ｎｉ粉末作原料，用还原扩散法直接制造ＺｒＮｉ合金粉末的过程进行了研究分析。发现Ｃａ不仅是ＺｒＯ２的还原剂，而且是Ｎｉ的溶剂和载体。在合金形成过程中，Ｎｉ通过在液体Ｃａ中的溶解和扩散，到达被还原出来的金属Ｚｒ表面，并与Ｚｒ合金化形成ＺｒＮｉ合金。因此，Ｃａ的添加量是过程的关键因素。
The processes of ZrNi alloy powder directly produced by reduction diffusion method have been investigated,in which mixed powder of ZrO 2 and Ni is used as feed material and Ca as reducing agent.It has been shown that Ca is not only the reductant of ZrO 2,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.
出处
《粉末冶金技术》
CSCD
北大核心
1996年第4期243-248,共6页
Powder Metallurgy Technology
基金
国家自然科学基金支持项目
关键词
还原扩散法
钙
锆镍合金
粉末
reduction diffusion method\ ZrNi alloy\ calcium
