日本金属学会誌

J. Japan Inst. Metals, Vol. 59, No. 1 (1995),
pp. 65-70

Effect of the Electrode Shape on the Formation of Ultrafine Particlesin Ar-H2 Arc Plasma Process

Katsuo Saitou1, Mitsushige Nakayama2 and Jyuzo Shibata3

1Faculty of Engineering, Gunma University, Kiryu
2Faculty of Engineering, Kokushikan University, Tokyo

3Technical Development Bureau, Nippon Steel Corporation, Nagoya

Abstract:

Nickel ultrafine particles were produced using the Ar-H2 arc plasma method under constant electric power. The factors which affect the ultrafine particle generation process were chosen as the hydrogen content in a mixed gas and the electrode angle. The generation rate of ultrafine particles depends on the electrode angle. The mean diameter of ultrafine particles converted from a specific surface area increases with increasing hydrogen content and electrode angle. In order to explain these phenomena, a new idea was proposed on the basis of a mass transport in the arc plasma.


(Received June 24, 1994)

Keywords:

nickel, ultrafine particle, arc plasma, electrode, generation rate


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