Direct Observation of Cathode Surface : Gas-Tungsten-Arc Electrode (3)(Physics, Process, Instrument & Measurement)
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概要
- 論文の詳細を見る
Direct observation of cathode tip during arc burning was carried out by using stereoscope. The important phenomena concerning the current density, morphorogical change near emission area as a function of arcing time and current in pure argon and pure helium shielding gases, and rim formation in Ar+0.2%O_2 and He+0.2%O_2 shielding gases were studied. La_2O_3-W electrodes are superior to ThO_2-W electrodes in these characteristics. Also, the effective work functions of these electrodes were estimated showing that the work function of La_2O_3-W electrode is lower than that of ThO_2-W electrode.
- 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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KIRIISHI Daisuke
Osaka Univ.
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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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