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Production of Ultrafine Particles of Refractory Materials in the Thermal Plasma Processing

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 41 Issue 1 Page 95-101
published_at 1990-10
KJ00000156824.pdf
[fulltext] 429 KB
Title
熱プラズマプロセスによる高融点材料の超微粒子生成
Production of Ultrafine Particles of Refractory Materials in the Thermal Plasma Processing
Creators Watanabe Makoto
Creators Sakiyama Satoshi
Creators Fukumasa Osamu
Creators Naitou Hiroshi
Creators Osaki Katashi
Source Identifiers
In order to clarify the interaction between the plasma flow and powder materials in the low pressure processing, we have studied the influence of the feed ring length on production of fine particles. In the present reactor, the feed ring works as a mixing plenum after injecting powders and gas mixture into the plasma flow, because it confines the plasma and powders for both efficient mixing and heat transfer from plasma flow. We have confirmed that the number density of the prepared fine particles increases with the increase of the feed ring length. On the other hand, at the feed ring exit, the spectroscopic temperature of the three plasma jets for three different feed rings is nearly equal to each other. From these results we have concluded that it is effective for heating powder materials injected into the plasma flow to increase the feed ring length.
Subjects
電気電子工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1990-10
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部