期刊
MATERIALS LETTERS
卷 64, 期 21, 页码 2290-2292出版社
ELSEVIER
DOI: 10.1016/j.matlet.2010.07.067
关键词
Metals and alloys; Metallurgy; Molybdenum; Impurity; Hydrogen plasma arc melting; Glow discharge mass spectrometry
资金
- Ministry of Knowledge Economy of Korea
- Grants-in-Aid for Scientific Research [22360311] Funding Source: KAKEN
The refining effect of Ar/Ar-H-2 plasma arc melting (PAM) was investigated and the purity of Mo metals was evaluated by glow discharge mass spectrometry (GDMS). Most impurities in the Mo metals except for W were removed by Ar/Ar-H-2 PAM down to a few mass ppm levels, and the purities of respective Mo metals refined by Ar/Ar-20%H-2 PAM were improved up to 4N(99.9943%) and 5N(99.9996%). It is also found that Ar-H-2 PAM provides excellent decarburization, deoxidation, and denitrogenization. This confirmed that the refining effect is chemically induced by activated hydrogen atoms during Ar-H-2 PAM. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据