Calculation of Thermodynamic Properties of Cu-Ce Binary Alloy and Precipitation Behavior of Cu₆Ce Phase

• Li Haihong

  School of Environment and Materials Engineering, Yantai University

• Sun Xueqin

  School of Environment and Materials Engineering, Yantai University

• Zhang Shangzhou

  School of Environment and Materials Engineering, Yantai University

書誌事項

タイトル別名

• Calculation of Thermodynamic Properties of Cu-Ce Binary Alloy and Precipitation Behavior of Cu₆Ce Phase

抄録

The mixing enthalpy (ΔH), the excess entropy (S_AB^E), the excess Gibbs free-energy (G_AB^E) and the component activities (a) of Cu-Ce binary alloy system were calculated based on Miedema’s model and some general thermodynamic relations. Results showed that the values of ΔH, S_AB^E, and G_AB^E of Cu-Ce binary alloy in 1555 K were all negative in the whole range concentration. The activities of Cu and Ce had negative deviation from Raoult’s Law, which indicated that there was a strong interaction between Cu and Ce. The calculation results of the mixing enthalpies and the activities of Cu and Ce agreed well with the experimental results. Cu₆Ce phase precipitation behavior in thermodynamics and dynamics were also discussed. Furthermore, combining the experiment, the existence of Cu₆Ce phase particles was observed using scanning electron microscopy (SEM) and energy dispersion spectrometry (EDS).

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 55 (12), 1816-1819, 2014

  公益社団法人 日本金属学会

キーワード

• Miedema’s model
• thermodynamic properties
• copper
• cerium
• Cu₆Ce

詳細情報

• CRID: 1390001204254559872
• NII論文ID: 130004713122
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.m2014319
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 025941148
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025941148
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/55/12/55_M2014319/_pdf
• 本文言語コード: en
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