Tungsten electrode doped with two rare earth oxides (binary composite tungsten electrode) usually produces by powder metallurgy method and binary composite tungsten electrodes include W-La2O3-Y2O3, W-La2O3-CeO2, and W-Y2O3-CeO2. Comparing composite tungsten electrode’s physical property of welding arc with tungsten electrode doped with one rare earth oxides and thorium tungsten electrode can well understand composite electrode performance. After comparison, binary composite rare earth tungsten electrode properties are better than thorium tungsten electrode and tungsten electrode doped with single rare earth oxide.
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