Enhancement of secondary emission property of molybdenum cathode co-doped with La_2O_3 and Y_2O_3  

作　　者：王金淑 刘伟 任志远 杨帆 高非 周美玲 

机构地区：[1]The Key Lab of Advanced Functional Materials,Ministry of Education China,School of Materials Science and Engineering,Beijing University of Technology

出　　处：《Journal of Rare Earths》2009年第6期975-979,共5页稀土学报（英文版）

基　　金：supported by the 863 program of China (2006AA03Z524, 2008AA031001);National Nature Foundation (50801001);Beijing New Century Hundred, Thousand and Ten Thousand Talent Project (Q1009001200802)

摘　　要：La2O3 and Y2O3 co-doped Mo secondary emitters were prepared by three kinds of doping method combined with high temperature plasma sintering.The secondary electron emission property and microstructure of the cathodes were studied.It showed that the cathode prepared by liquid-liquid doping method exhibited the best emission property among all the samples prepared by liquid-solid doping,solid-solid doping and liquid-liquid doping methods due to a uniform distribution of different substances.RE2O3 existed unifo...La2O3 and Y2O3 co-doped Mo secondary emitters were prepared by three kinds of doping method combined with high temperature plasma sintering.The secondary electron emission property and microstructure of the cathodes were studied.It showed that the cathode prepared by liquid-liquid doping method exhibited the best emission property among all the samples prepared by liquid-solid doping,solid-solid doping and liquid-liquid doping methods due to a uniform distribution of different substances.RE2O3 existed unifo...

关 键 词：MOLYBDENUM secondary emission CATHODE rare earths 

分 类 号：O614.33[理学—无机化学]