Thermodynamic Properties of Oxygen in Molten Copper and the Effects of Tin and Nickel on These Properties

• Oishi Toshio

  Department of Metallurgy, Faculty of Engineering, Kyoto University

• Kozuka Zensaku

  Department of Metallurgy, Faculty of Engineering, Kyoto University

• Moriyama Joichiro

  Department of Metallurgy, Faculty of Engineering, Kyoto University

抄録

The e.m.f. measurements were carried out in the temperature range of 1100°∼1250°C by means of the following galvanic cells employing solid electrolytes:<BR>Ni, NiO/ZrO₂(+CaO)/O(in Cu or Cu alloys).<BR>From these experimental results, it was found that (1) in the Cu–O system, Henry’s law was obeyed from the low oxygen content of 100 ppm to such a high content as to precipitate Cu₂O, and the activity coefficient of oxygen (the reference state for oxygen is pure gas at 1 atm) was 0.120 at 1100°C, 0.150 at 1150°C and 0.195 at 1200°C, (2) the activity of oxygen in liquid copper was decreased by the addition of tin and nickel and depressions became more pronounced by the addition of nickel than that of tin, and (3) the interaction parameters ε₀^(Sn) and ε₀^(Ni) were determined as<BR>ε₀^(Sn)=−6.45×10⁴⁄T+41.57 and<BR>ε₀^(Ni)=−7.93×10⁴⁄T+46.47, respectively.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 12 (6), 410-416, 1971

  社団法人 日本金属学会

キーワード

• General Engineering

詳細情報

• CRID: 1390282680093863808
• NII論文ID: 130003485105
• DOI: 10.2320/matertrans1960.12.410
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/12/6/12_6_410/_pdf
• 本文言語コード: en
• データソース種別:
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  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可