CALPHAD法による熱空孔の取り扱い

CALPHAD法による熱空孔の取り扱い

Thermal vacancies in solids have not been treated explicitly in the CALPHAD-type thermodynamic assessments, because it was considered that their contributions to the Gibbs energy were limited (even at the melting point). However, it is necessary for the third generation database for CALPHAD-type the...

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Veröffentlicht in:Nihon Kinzoku Gakkai shi (1952) 2017/03/01, Vol.81(3), pp.127-132
Hauptverfasser: 阿部, 太一, 橋本, 清, 下野, 昌人
Format: Artikel
Sprache:jpn
Schlagworte:
Assessments
Mathematical analysis
Melting points
mono vacancy
point defect
Solid solutions
sublattice model
substitutional solid solution
Temperature dependence
thermodynamic database
Vacancies
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Zusammenfassung:Thermal vacancies in solids have not been treated explicitly in the CALPHAD-type thermodynamic assessments, because it was considered that their contributions to the Gibbs energy were limited (even at the melting point). However, it is necessary for the third generation database for CALPHAD-type thermodynamic calculations. In this paper, it was proposed that an appropriate procedure to set parameters in the CALPHAD-type assessments to reproduce the temperature dependency of thermal vacancy in pure metals and solid solutions.
ISSN:0021-4876
1880-6880
DOI:10.2320/jinstmet.J2016061