著者

植森 龍治 向井 俊夫 谷野 満

出版者

The Iron and Steel Institute of Japan

雑誌

鉄と鋼 (ISSN:00211575)

巻号頁・発行日

vol.77, no.11, pp.2060-2067, 1991-11-01 (Released:2009-06-19)

参考文献数

20

被引用文献数

1 1

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Partition of alloying elements between spinodally-decomposed phases in Fe-Cr-Co-Si alloys was examined by Atom-Probe Field-Ion Microscope (AP-FIM). The results showed that the ferromagnetic particle (α1) is rich in Fe and Co, and the weak-ferromagnetic matrix (α2) rich in Cr and Si. The enrichment of Si in the α2 phase was explained through thermodynamical considerations. Si is more strongly bonded to Cr than to Fe. The improvement of hard magnetic properties by Si additions was found and discussed in terms of the changes in saturation magnetization of the α1 and α2 phases. The increase in coercive force may be mainly attributed to the reduction of saturation magnetization of the α2 phase by the addition of Si.