中國有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 6 No. 4 December 1996 |
THERMODYNAMIC ANALYSIS OF Mo-La2O3 THERMIONIC CATHODE WIRE
Zhou Meiling, Wang Jinshu, Zhang Jiuxing,Nie Zuoren, Li Er, Zuo Tieyong
（Department of Materials Science and Engineering,BeijingPolytechnic University, Beijing100022）
Abstract:Both thermodynamic calculation and experimental observation show that no elemental lanthanum can be obtained by reduction or thermal decomposition at high temperature. The emission mechanism of Mo-La2O3(Mo-La) cathode is much different from the mono-atomic layer mechanism of Th-W cathode. A new emission mechanism of Mo-La cathode has been put forward, which can reasonably explain the emission behavior of Mo-La2O3 cathode.
Key words: molybdenum La2O3 cathode thermodynamics
