矫顽力
钐
材料科学
退火(玻璃)
等温过程
合金
扫描电子显微镜
相(物质)
分析化学(期刊)
钛
冶金
结晶学
化学
凝聚态物理
复合材料
热力学
无机化学
物理
有机化学
色谱法
作者
Yoon Bae Kim,Satoshi Sugimoto,Masuo Okada,M. Homma
标识
DOI:10.1016/0925-8388(91)90028-t
摘要
Phase relations of the SmFeTi system were studied, especially surrounding the compound SmFe11Ti. Isothermal sections of the iron-rich corner of the SmFeTi system were constructed, based tentatively on microstructural studies. The as cast SmFe11Ti alloy was nearly single phase with a ThMn12-type structure. It was found that the phases α-Fe(Ti), Fe2Ti, Fe17Sm2, Fe3Sm and Fe2Sm exist around the composition of the SmFe11Ti compound after annealing at 800 °C. After annealing at 1000 °C, a liquid and a high temperature phase exist instead of the Fe3Sm and Fe2Sm phases. The high temperature phase, which is believed to be non-magnetic or weakly magnetic, was observed in samarium-rich alloys with high titanium content. The composition of this high temperature phase was identified as SmFe3Ti2 by scanning electron microscopy and energy-dispersive X-rays. In the meltspun samples, the SmFe11Ti showed the highest coercivity of the alloys studied. The course of coercivity of melt-spun samples revealed that coercivity is most sensitive to samarium content among the components of the SmFeTi system.
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