期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 610, 期 -, 页码 341-346出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.05.081
关键词
Permanent magnets; Rapid-solidification; Magnetic measurement; Oxidation; Corrosion
资金
- National Natural Science Foundation of China [51174094]
- Program for New Century Excellent Talents in University [NCET-11-0156]
- State Key Laboratory for Advanced Metals and Materials [2011-ZD05]
The effects of Zr and Si co-substitution on the magnetic properties, oxidation and corrosion resistances of TbCu7-type Sm-Co alloys have been investigated. Zr addition is very effective in promoting the formation of TbCu7-type structure and it contributes to the most of the coercivity enhancement. The largest coercivity of 1389 kA/m was obtained for SmCo6.3Zr0.4Si0.3 alloy. Si addition can significantly improve the oxidation resistance. After exposure in air at 500 degrees C for 90 h, the thickness of the oxidation layer was just 106 mu m for as-cast SmCo6.4Zr0.3Si0.3 alloy compared to 230 mu m for the SmCo6.7Zr0.3 alloy. The room temperature coercivity of SmCo6.4Zr0.3Si0.3 ribbon is as high as 884 kA/m after exposure at 300 degrees C in air for 10 min. The improved corrosion resistance for Si added alloys was also confirmed by polarization curve measurement. Zr and Si co-substitution provides a good approach for enhancing both the coercivity and resistances to oxidation and corrosion of the TbCu7-type Sm-Co alloy. (C) 2014 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