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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 9    No. 1    March 1999

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EFFECTS OF Al CONTENT ON STRUCTURAL STABILITY AND MAGNETIC PROPERTIES OF Sm2(Fe, Al)17COMPOUNDS①
Xu Rengen, Wang Xinhua, Wu Jianmin , Pan Hongge,Chen Changpin, Wang Qidong and Dai Lichi

1.Department of Materials Science and Engineering,Zhejiang University, Hangzhou 310027, P. R. China;
2.Department 2, Central Iron and Steel Research Institute, Beijing100081, P.R. China

Abstract:The magnetic properties of Sm2Fe17-xAlx(x=0, 1, 2, 3) compounds and their hydrides are systematically investigated. The results reveal that all compounds have the Th2Zn17-type structure. As the content of Al increases, the Curie temperature of Sm2(Fe,Al) 17compounds increases, and their saturation magnetization decreases. It is first discovered that the Curie temperatures of the hydrides of Sm2(Fe,Al) 17 compounds measured from heating process are higher than those measured from cooling process, and their difference is denoted asΔT*c. The correlation betweenΔT*cand the structural stability of Sm2(Fe,Al) 17com- pounds as well as their corresponding hydrides is discussed.

 

Key words: Sm2Fe17 Al hydride Curie temperature structural stability

ISSN 1672-7029
CN 43-1423/U

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