Effect of Atomizing Gas on Oxidation of Droplets in Wire Arc Spraying
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- Watanabe Takayuki
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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- Usui Munemitsu
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
Bibliographic Information
- Other Title
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- ワイヤアーク溶射における溶融粒子の酸化に及ぼすアトマイジングガスの影響
- ワイヤアーク ヨウシャ ニ オケル ヨウユウ リュウシ ノ サンカ ニ オヨボス アトマイジングガス ノ エイキョウ
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Abstract
Wire arc spraying is one of the most economical thermal plasma coating processes. The disadvantage of wire arc spraying is larger porosity and larger oxide content of the coatings. The purpose of this study is to reduce the oxidation of droplets, and to investigate the effect of atomizing gas on the droplet formation. Lower oxidation at the electrodes results in the stability of the arcing process, and in a decrease in production of AlO in gas phase. The stable arcing process resulting from the lower oxidation leads to the improvement of the coatings. Argon used as the atomizing gas leads to the smallest diameter of the droplets. This is due to the highest temperature of the atomizing gas. Oxidation during the droplet flight is stronger than that at the droplet formation from the electrodes. Argon or nitrogen used as the atomizing gas cannot decrease the oxide content of the droplets.
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 63 (1), 98-102, 1999
The Japan Institute of Metals and Materials
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Details
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- CRID
- 1390282681467741824
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- NII Article ID
- 10002548634
- 130007341629
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 4636977
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed