Effect of arc behaviour on the temperature fluctuation of carbon electrode in DC arc discharge

26th Symposium on Plasma Sciences for Materials

物理学;材料科学

Liang, F.^1 ; Tanaka, M.^1 ; Choi, S.^1 ; Watanabe, T.^1,2

Department Environmental Chemistry and Engineering, Tokyo Institute of Technology, Yokohama, Japan^1

Department Chemical Engineering, Kyushu University, Fukuoka, Japan^2

关键词: Anode attachment;    Anode surfaces;    Arc discharge;    Carbon electrode;    DC arc discharge;    Electrode surfaces;    Surface temperatures;    Temperature fluctuation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/518/1/012027/pdf
DOI  :  10.1088/1742-6596/518/1/012027

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Diffuse and multiple arc-anode attachment modes were observed in a DC arc discharge with a carbon electrode. During the arc discharge, the surface temperature of the electrode was successfully measured by two-colour pyrometry combined with a high-speed camera which employs appropriate band-pass filters. The relationship between the arc-anode attachment mode and the temperature fluctuation of electrode surface was investigated. The diffuse arc-anode attachment mode leads to relatively large temperature fluctuation on anode surface due to the rotation of the arc spot. In the case of diffuse mode, the purity of synthesized multi-wall carbon nanotube was deteriorated with temperature fluctuation.