Volume 22 Issue 3
Aug.  2021
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YUAN Wenxia, Olga Semenova, Herbert Ipser, QIAO Zhiyu. Thermodynamics and Statistical-Thermodynamics of the Ni3Ga Intermetallic Compound[J]. Chinese Journal of Engineering, 2000, 22(3): 202-204. DOI: 10.13374/j.issn1001-053x.2000.03.003
Citation: YUAN Wenxia, Olga Semenova, Herbert Ipser, QIAO Zhiyu. Thermodynamics and Statistical-Thermodynamics of the Ni3Ga Intermetallic Compound[J]. Chinese Journal of Engineering, 2000, 22(3): 202-204. DOI: 10.13374/j.issn1001-053x.2000.03.003

Thermodynamics and Statistical-Thermodynamics of the Ni3Ga Intermetallic Compound

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  • Received Date: December 31, 1999
  • Available Online: August 26, 2021
  • Thermodynamic activities of gallium were measured between 1073 and 1273 K in the nonstoichiometric intermetallic compound Ni3Ga using an emf-method based on solid oxygen-conducting electrolytes. The partial molar enthalpies and entropies were derived from their dependence on temperature. The results of the activity measurements were interpreted in terms of a statistical-thermodynamic model for nonstoichiometric phases with the cubic Ll2-superstructure considering four types of point defects, i. e-antistructure atoms and vacancies on the nickel- and gallium-sublattice. The enerpies of formation of the point defects at the stoichiometric composition are used as adjustable parameter.

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