Binary system Sm-Co: Revision of the phase diagram in the Co rich field

被引：52

作者：

Cataldo, L

Lefevre, A

Ducret, F

CohenAdad, MT

Allibert, C

Valignat, N

机构：

[1] UNIV LYON 1,LAB PHYSICOCHIM MINERALE 2,UMR 5620,F-69365 LYON,FRANCE

[2] INST NATL POLYTECH GRENOBLE,THERMODYNAM & PHYSICOCHIM MET LAB,F-38031 GRENOBLE,FRANCE

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1996年 / 241卷 / 1-2期

关键词：

phase diagram; samarium cobalt compounds; solid solubility;

D O I：

10.1016/0925-8388(96)02308-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The phase diagram of the binary system Co-Sm was studied in the composition range 0-26 at/% Sm by differential thermal analysis, and the observed solid phases Sm2Co17, SmCo5, Sm5Co19, Sm2Co7 and SmCo3 were characterized by X-ray diffraction and electron microprobe analysis. The congruent melting point of Sm2Co17 is confirmed, and up to 1325 degrees C the observed structural form is only the rhombohedral one. SmCo5 is formed by peritectic reaction, it is not stoichiometric and the range of solid solution is determined. The metastable uncongruent melting point of Sm2Co7 and the stable peritectic decomposition of Sm5Co19, were determined by DTA. Microprobe analysis shows that the observed phases are slightly richer in samarium than indicated by their formulas.

引用

页码：216 / 223

页数：8

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