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高等学校化学研究 ›› 1990, Vol. 6 ›› Issue (4): 300-306.

• Articles • 上一篇    下一篇

Studies on Lattice Parameter,Molar Volume and Excess Molar Volume of Pb-based a-phase Solid Solution in Pb-Sn-Cd Ternary System

Liu Hengli1, Long Xiang2, Kang Hongye2, Zhao Muyu2   

  1. 1. Department of Rock Chemistry, Changchun University of Earth Science, Changchun;
    2. Department of Chemistry, Jilin University, Changchun
  • 收稿日期:1989-12-14 出版日期:1990-12-24 发布日期:2011-09-09
  • 作者简介:Liu Hengli

Studies on Lattice Parameter,Molar Volume and Excess Molar Volume of Pb-based a-phase Solid Solution in Pb-Sn-Cd Ternary System

Liu Hengli1, Long Xiang2, Kang Hongye2, Zhao Muyu2   

  1. 1. Department of Rock Chemistry, Changchun University of Earth Science, Changchun;
    2. Department of Chemistry, Jilin University, Changchun
  • Received:1989-12-14 Online:1990-12-24 Published:2011-09-09

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摘要： The lattice parameters a and the molar volumes Vm of Pb-based a-phase solid solutions in the Pb-Sn-Cd ternary system were determined by means of X-ray diffraction. The lattice parameters a vary linearly with the molar fractions, the molar volumes show a positive deviation from the ideal solution behaviour, and the contribution of the solute Cd to the excess molar volumes Vm is much larger than that of the solute Sn. According to Vegard' s law orsub-regular solution model, the relationship between the experimental data of a or Vm andthe compositions of alloy is obtained by the mathematic regressive method, the prediction precisions of the both formulae are within the limits of experiment error.

关键词: Alloy solid solution, Lattice parameter, Molar volume, Excess molar volume

Abstract: The lattice parameters a and the molar volumes Vm of Pb-based a-phase solid solutions in the Pb-Sn-Cd ternary system were determined by means of X-ray diffraction. The lattice parameters a vary linearly with the molar fractions, the molar volumes show a positive deviation from the ideal solution behaviour, and the contribution of the solute Cd to the excess molar volumes Vm is much larger than that of the solute Sn. According to Vegard' s law orsub-regular solution model, the relationship between the experimental data of a or Vm andthe compositions of alloy is obtained by the mathematic regressive method, the prediction precisions of the both formulae are within the limits of experiment error.

Key words: Alloy solid solution, Lattice parameter, Molar volume, Excess molar volume