Experimental Investigation of the Phase Equilibria in the Co-V-Sn Ternary System
Experimental Investigation of the Phase Equilibria in the Co-V-Sn Ternary System
复制标题
Co-V-Sn三元体系相平衡的实验研究
DOI：
10.1007/s11669-017-0558-3
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发表时间：
2017
影响因子：
1.4
通讯作者：
Wang C. P.
中科院分区：
文献类型：
--
作者：
Liu X. J.;Huang L. S.;Jiang H. X.;Yang S. Y.;Wang C. P.
用电子探针和X射线衍射分析方法研究了Co-V-Sn三元系在900和1000 °C的相平衡。在900 °C等温截面上发现了7个三相区，在1000 °C等温截面上发现了6个三相区。在900 °C下确认了Heusler型三元化合物Co2 VSn，其组成范围为36.7- 57.6at.% Co和11.8- 20.9at.% Sn，在1000 °C的较高温度下变得稍微更宽。Sn固溶于α（Co）、Co 3V和σ-Co2 V3相，固溶度较低。V几乎不溶于液体，溶解度小于0.5at.%。Co在V3 Sn相中的溶解度随温度的升高而增加，从4.4at.%在900 °C至11.6原子%温度为1000 °C。
The phase equilibria of the Co–V–Sn ternary system at the 900 and 1000 °C sections were investigated experimentally by means of electron probe microanalysis and x-ray diffraction analysis. Seven three-phase regions were found in the isothermal section at 900 °C and six triphase regions at 1000 °C. The Heusler-type ternary compound Co2VSn was confirmed at 900 °C in the composition ranges of 36.7–57.6 at.% Co and 11.8–20.9 at.% Sn, becoming slightly wider at the higher temperature of 1000 °C. Sn dissolves in α(Co), Co3V, and σ-Co2V3phases with low solubility. V is almost insoluble in liquid, with solubility of less than 0.5 at.%. The solubility of Co in V3Sn phase increased with temperature, from 4.4 at.% at 900 °C to 11.6 at.% at 1000 °C.