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Experimental Investigation of the Phase Equilibria in the Ni-Co-Sn Ternary System
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Affiliation:

College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen

Clc Number:

TG113

Fund Project:

National Natural Science Foundation of China (Grant No. 51771158), and Joint Fund to Promote Cross-Strait Scientific and Technological (Grant No. U1605243)

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    Abstract:

    Phase equilibria of the Ni-Co-Sn ternary system at 700 °C and 1000 °C were experimentally determined by using electron probe microanalyzer and X-ray diffraction. No ternary compound was found at 700 °C and 1000 °C. There was an extensive region of mutual solubility existing between βCo3Sn2 phase and Ni3Sn2(h) phase. Three Ni-Sn binary compounds [Ni3Sn(l), Ni3Sn(h) and Ni3Sn4] showed absolutely different solubilities for the element Co. The maximum solubility of Co in Ni3Sn(l) and Ni3Sn4 phases at 700°C were 6.9 at.% and 25.6 at.%, and the solubility of Ni3Sn(h) phases changed into 15.5 at.% at 1000°C. The Ni-Co side presented an interconnected (αCo, Ni) phase region at both 700oC and 1000°C and its homogeneity range for Sn was from 1 at.% to 10.5 at.%. The solubility of Ni in the linear compound CoSn phase was about 15.9 at.%.

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[Liu Xingjun, Deng Yuling, Zhang Jinbin, Yang Mujin, Yang Shuiyuan, Han Jiajia, Lu Yong, wangcuiping. Experimental Investigation of the Phase Equilibria in the Ni-Co-Sn Ternary System[J]. Rare Metal Materials and Engineering,2020,49(5):1539~1545.]
DOI:10.12442/j. issn.1002-185X.20181273

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History
  • Received:December 21,2018
  • Revised:January 13,2019
  • Adopted:February 21,2019
  • Online: June 05,2020
  • Published: