Gas-Tungsten-Electrode (Report 5) : Effect of Combined Additives of Rare Earth Metal Oxides on Arc Characteristics of Tungsten Electrode(Physics, Process, Instrument & Measurement)
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概要
- 論文の詳細を見る
A comparative study has been made on the arc characteristics of gas-tungsten-arc (GTA) cathodes, consisting of tungsten mixed with a small quantity of two or three combined additives of Y-, Ce- and La-oxides respectively. Arc starting characteristics, arc pressure, electrode consumption, change in electrode tip shape due to long time operation and stability of rare earth metal oxides during arcing are compared. The present results have indicated that the arc characteristics and electrode durability depends on the stability and the behavior of rare earth metal oxides during arcing. Electrodes activated with three combined additives of rare earth metal oxides showed good arc characteristics and high endurance to long time operation related to the changes in the grain boundary morphology which retardes the migration of La-oxide and Ce-oxide.
- 大阪大学の論文
著者
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USHIO Masao
Osaka University
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Matsuda F
Osaka Univ. Jpn
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MATSUDA Fukuhisa
Osaka University
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Ushio M
Osaka Univ.
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Ushio Masao
Osaka Univ. Osaka Jpn
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SADEK Alber
Osaka University
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Sadek A
Cmrdi Cairo
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Sadek A
大阪大
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Sadek Alber
大阪大学溶接工学研究所
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サデク アルベール
大阪大学
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Matsuda Fukuhisa
Osaka Univ.
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