1. 1) A. A. Sadek, M. Ushio and F. Matsuda: Effect of Rare Earth Metal Oxide Additions to Tungsten Electrodes, Metallurgical Transactions A, Vol. 21A (1990) 3221-3236.
2. 2) K. Tanaka, F. Matsuda and M. Ushio: Effect of Additives in Tungsten Electrode -Consumption of Electrode Tip at Relative High Current-, Quarterly Journal of the Japan Welding Society, Vol. 13, No. 4 (1995) 524-531.
3. 3) K. Yamamoto, M. Tanaka, S. Tashiro, K. Nakata, K. Suzuki and K. Yamazaki: Numerical Modeling of Welding Arc with Complex System between Arc Plasma and Molten Electrode, Materials Science Forum, Vol. 580 (2008) 311-314.
4. 4) J. Haidar and A. J. D. Farmer: Surface temperature measurements for tungsten-based cathodes of high-current free-burning, Journal of Physics D: Applied Physics, Vol. 28 (1995) 2089-2094.
5. 5) M. Tanaka, K. Yamamoto, S. Tashiro and J. J. Lowke: Predictions of current attachment at thermionic cathode for TIG arcs, Materials Science Forum, Vol. 580 (2008) 319-322.