日本金属学会誌

J. Japan Inst. Metals, Vol. 63, No. 1 (1999),
pp. 28-33

Selective Reaction of Fe-Co-Ni Alloys with Ar-Cl2 Plasmas

Akihiro Takeuchi1 and Takayuki Watanabe2

1Electrotechnology Applications R & D Center, Chubu Electric Power Co., Inc., Nagoya 459-8522
2Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Tokyo 152-8550

Abstract:

Peculiar reactions are known to occur using the features of arc plasmas, high temperature and high chemical activity, according to circumstances that are very effective. However few chemical reactions of arc plasmas have been unknown. Researches in the field of arc plasma reactions have been used hydrogen plasma gas to reduce metal oxides and to add heat to samples excessively, but there are very few thermodynamic data on hydrides which cause the plasma reactions. We have investigated the arc plasma reactions with chlorine because it reacts with metal to form chlorides which have high vapor pressure to be separated peculiarly and there are many available thermodynamic data on chlorides to study the reaction mechanism theoretically, and succeeded in separating iron component from Fe-Co-Ni alloys.


(Received July 21, 1998; In Final Form November 13, 1998)

Keywords:

arc plasma, Gibbs free energy change, chloride, melting, iron-cobalt-nickel alloy


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