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
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
Fukumasa Osamu
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.
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