新型稀土电极材料

ELECTRODE MATERIALS MADE FROM NEW TYPE OF RARE-EARTH

介绍了添加稀土氧化物的新型电极材料钨镧、钨钇及随行料钨铈、钨锆的研制过程,并列出了其主要工艺参数和材料电性能测定结果。通过组织和性能分析认为:Y_2O_3对细化合金粉及烧结合金晶粒度的作用最明显,以W_4O_(11)为基添加氧化物比以WO_3为基的性能优良。并且通过电弧特性的比较得出,在研制的几种电极材料中,新型电极材料WLa_(15)性能最佳。

The paper has introduced a developed process for new type of electrode materials by adding rare-earth oxides including W-La, W-Y, W-Ce and W-Zr and given out its main technological parameters and the results of electric properties measured. It has been concluded by analyzing structures and properties that Y_2O_3 has the most obvious roles in fining alloyed powder and grain size of sintered alloys. The properties by adding W_4O_(11) in matrix are superior than that by adding WO_3 in matrix. Furthermore, it has been known by the comparison of electrode materials that WLa_(15) has best properties among several electrode materials studied.