中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 8 No. 1 March 1998 |
（1.Department of Materials Science and Engineering,Central South University of Technology, Changsha 410083, P. R. China；
2.Department of Materials Science and Engineering,BeijingPolytechnic University, Beijing100022, P. R. China）
Abstract:A new thermionic electron emission material has been studied. The electron emission properties and microstructure of Y-Mo(Mo-Y2O3) wire with content of 3%~5% Y2O3 have been systematically investigated by means of electron tube emission and electron microscope. The results showed that the Y-Mo material has very good electron emission ability, higher emission efficiency and lower operation temperature than those of Th-W cathode, respectively. In addition, Y-Mo cathode electron tube exhibits more stable emission current than that of La-Mo ones.
Key words: Mo Y2O3 cathode thermionic emission
