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- 藤田 康世
- 東北大学素材工学研究所
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- Pagador Romeo U.
- 東北大学素材工学研究所
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- 日野 光久
- 東北大学素材工学研究所
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- 阿座上 竹四
- 埼玉工業大学機械工学科
書誌事項
- タイトル別名
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- Thermodynamic Investigation on Molten Cu-Ni-Fe Alloys by the Double Knudsen Cell-Mass Spectrometer System
- クヌーセンセル シツリョウ ブンセキホウ ニヨル ヨウユウ Cu Ni Feケ
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抄録
For thermochemical analysis of the phase equilibrium between the nickel alloy and slag phases in relation to the nickel smelting process, the mass spectrometer combined with a double Knudsen cell was adopted to measure the activities of the elements in the molten Cu-Ni and Cu-Ni-Fe alloys and the activity of sulfur below 5 at%S in the ternary alloys at 1623 K. A major feature of this set-up is that the activity values of the components can be determined at every experimental point without applying the Belton-Fruehan equation which requires the ion intensity measurement over the whole alloy composition region. In the present study, the following results were obtained.<BR>(1) The activities of copper and nickel in the molten Cu-Ni alloys show a slightly positive deviation from the Raoult’s law and the activity behavior is consistent with a reference in the composition region higher than 50 at%Cu.<BR>(2) The copper activity in the composition region over 30 at%Cu of the Cu-Ni-Fe ternary system shows a positive deviation from the ideal behavior and the deviation increases with increasing iron content in the Cu-Ni alloy.<BR>(3) The activity coefficients of sulfur at infinite dilute solution in the Cu-Ni-Fe ternary alloys are found to be between 3 to 4×10−2 in the composition region over 30 at%Cu. This tendency agrees with the sulfur behavior expected from the Cu-Ni-S and Fe-Ni-S systems.
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 61 (7), 619-624, 1997
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282681468517760
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- NII論文ID
- 10001966926
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 4267892
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- データソース種別
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- JaLC
- NDL
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