The thermodynamic behavior of copper in the CaO-B 2O 3 and BaO-B 2O 3 slag system

Dea Young Jang, Dong Joon Min

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7 Citations (Scopus)

Abstract

The Cu solubility was measured in the CaO-B 2O 3 and BaO-B 2O 3 slag systems to understand the dissolution mechanism of Cu in the slags. The Cu solubility had a linear relationship with oxygen partial pressure in the CaO-B 2O 3 slag system, which corresponds with previous studies. Also, the Cu solubilities in slag decreased with increasing the slag basicity, which value of slope was close to -0.5 in logarithmic form. From the results of experiment, the Cu dissolution mechanism established as follows: To compensate the effects of oxygen partial pressure and chemical potential of Cu in alloy on the Cu solubility of slag, the concept of cuprous capacity was suggested as follows: The cuprous capacity showed decreasing tendency as the slag basicity increased in the B 2O 3 bearing slags as well as in CaO-SiO 2-Al 2O 3(Satd.) and FeO-Fe 2O 3-SiO 2(Satd.) slag systems. It is suggested that the proposed dissolution mechanism could be available in various slag systems.

Original languageEnglish
Pages (from-to)1144-1149
Number of pages6
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume42
Issue number6
DOIs
Publication statusPublished - 2011 Dec

Bibliographical note

Funding Information:
This work was funded by the fourth stage of Brain Korea 21. Special appreciation is warranted to Prof. I. Sohn of Yonsei University for helpful discussions.

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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