Preprints of the National Meeting of JWS
Preprints of the National Meeting of JWS
Session ID : 301
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Host: Japan Welding Society

Temperature effect of Tungsuten electrode on electron emission
*Yoji Ogawa
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Keywords: Tungsten electrode, emission, temperature, plasma, oxidation, evaporation
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Abstract
Evaluation of emission is important on numerical simulation of GTA process. Emission is given as a function of electrode surface temperature. However, actual reaction on electrode surface is very complex by evaporation and oxidation reaction of tungsten and included thoira or other rare elements. Time variation by erosion is also existed. Temperature effect of Tungsuten electrode on electron emission is considered by visual observation.
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© 2011 by Japan Welding Society
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