書誌事項
- タイトル別名
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- Oxidation of Tungsten Powder. (Study of the Surface States of Tungsten Powder (3))
- タングステン フンマツ ノ サンカ
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The surface oxidation of tungsten powder has been studied in the temperature range 150∼400° and at the oxygen pressure ranging from 10 to 400 mmHg, using a vacuum microbalance technique. Tungsten powders are pyropholic above the temperature which is dependent on the particle size, doping, heat treatment and oxygen pressure, etc. Below this temperature, two oxide layers are formed during the oxidation process. The outer layer is porous WO3 and the inner one is a dense, thin oxide film of a certain composition similar to that of the outer. The oxidation rate eventually comes to comply with linear law after a initial stage of film growth which is governed by a parabolic law. The mechanism of this oxidation kinetics is explained by the use of a model of a barrier scale layer.
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 24 (11), 756-760, 1960
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001206481563648
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- NII論文ID
- 40018257592
- 130007333070
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 9153032
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- データソース種別
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- JaLC
- NDL
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