Heating and acceleration processes of high melting point ceramic particles in pulsed plasma

被引：0

作者：

Miyamoto, Masahiro ^{[1
]}

Hikosaka, Tomoyuki ^{[1
]}

Yamada, Mamoru ^{[1
]}

Sakuta, Tadahiro ^{[1
]}

Tago, Masanari ^{[1
]}

机构：

[1] Fuji Electric Corp. R&D, Ltd

来源：

Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) | 1996年 / 116卷 / 02期

关键词：

Applications; (APP); -; Experimental; (EXP);

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Applying a pulsed plasma using a high current of the order of tens of kA is proposed for the plasma spraying of refractory materials. Numerical analysis was conducted of the short-time heating and acceleration of the particles. Based on this, experiments were performed using a specially developed plasma torch with a pulsed discharged current of 24 kA peak and a duration of 400 μs. Results showed the surface temperature of the alumina particles to reach values as high as 2700-3300 K, which was considerably higher than the melting point. Particle velocity was found to be about 200 m/s, which is comparable to that of dc plasma.

引用

页码：21 / 31