Refining effect of Ar-H-2 plasma arc melting of Nb-based alloy

被引：4
|
作者：
Elanski, D [1 ]
Mimura, K [1 ]
Isshiki, M [1 ]
机构：
[1] MOSCOW STEEL & ALLOYS INST,MOSCOW 117049,RUSSIA
来源：
VACUUM | 1996年 / 47卷 / 6-8期
关键词：
plasma arc melting; hydrogen plasma; refining; niobium; niobium-based alloy;
D O I：
10.1016/0042-207X(96)00079-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ar-H-2 plasma are melting of Nb-based alloy revealed that elimination of Ti, Fe and Al has a diffusion nature, controlled by diffusion in the gas and, at lower Al and Fe concentrations, by diffusion in the metal. Hydrogen addition to the plasma gas resulted in a remarkably higher removal rate of the impurities. Shaking of the specimen is effective in accelerating the process at lower Al and Fe concentrations. The dominant reason for the influence of H-2 addition on the purification process is changes of the melted metal temperature. Copyright (C) 1996 Elsevier Science Ltd.
引用
收藏
页码：845 / 847
页数：3
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