Nanostructured W-La2O3 electrode materials with high content La2O3 doping

作者：Chen WG^*; Kang ZY; Ding BJ

来源：Materials Letters, 2005, 59(10): 1138-1141.

DOI：10.1016/j.matlet.2004.09.055

• tungsten
• La2O3
• nanostructured material
• thermionic cathode

Nanostructured W-La2O3 electrode materials with a high content of La2O3 have been prepared by mechanical alloying (MA) and hot pressing and sintering (HPS). An investigation has been made on operation characteristics for nanostructured W-La2O3 cathodes. The service lifetime of the nanostructured W-La2O3 cathode is longer than that of commercially used W-2 wt.% La2O3 cathodes. These operation characteristics depend on the content of the rare-earth oxide. Specially, the content of La2O3 governs resistance to arc erosion of the electrodes.

• 出版日期2005-4
• 单位西安交通大学