Rare Earth Oxide Refractory Metal Salt Impregnated W Based Directly-Heated Cathode
QI Shi-Kai, WANG Xiao-Xia, LUO Ji-Run, HU Ming-Wei, LI Yun
Journal of Inorganic Materials . 2016, (9): 987 -991 .  DOI: 10.15541/jim20160008