Phase equilibria in Nb-Y-Si ternary system at 873 K
来源期刊：Journal of Rare Earths2012年第9期
论文作者：姜文平 湛永钟 李春流 柳帅 周慧黠 庄应烘
文章页码：934 - 940
摘 要：The isothermal section of the Nb-Y-Si ternary system at 873 K was investigated over the whole concentration range mainly by powder X-ray diffraction （XRD）, scanning electron microscopy （SEM） and energy dispersive analysis （EDX）. This isothermal section consisted of 10 single-phase regions, 17 two-phase regions, and 8 three-phase regions. The existence of the binary compounds, i.e., Y 5 Si 3 , Y 5 Si 4 , YSi, Y 3 Si 5 , YSi 2 , Nb 5 Si 3 and NbSi 2 at 873 K was confirmed. On the basis of XRD patterns, the structure types of Y 5 Si 4 , Y 3 Si 5 and YSi 2 were discussed. No ternary compound and no detectable solid solubility in the binary compounds were found.
姜文平，湛永钟，李春流，柳帅，周慧黠，庄应烘
Laboratory of Nonferrous Metal Materials and New Processing Technology, Ministry of Education, Guangxi University
摘 要：The isothermal section of the Nb-Y-Si ternary system at 873 K was investigated over the whole concentration range mainly by powder X-ray diffraction （XRD）, scanning electron microscopy （SEM） and energy dispersive analysis （EDX）. This isothermal section consisted of 10 single-phase regions, 17 two-phase regions, and 8 three-phase regions. The existence of the binary compounds, i.e., Y 5 Si 3 , Y 5 Si 4 , YSi, Y 3 Si 5 , YSi 2 , Nb 5 Si 3 and NbSi 2 at 873 K was confirmed. On the basis of XRD patterns, the structure types of Y 5 Si 4 , Y 3 Si 5 and YSi 2 were discussed. No ternary compound and no detectable solid solubility in the binary compounds were found.
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