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

页码：845 / 847

页数：3

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