A study of diffusion behavior of elements lanthanum and oxygen in Mo-La2O3 cathode

作者：Wang JS^*; Zhou ML; Nie ZR; Zhang JX; Zuo TY; Wang YM

来源：Journal of Alloys and Compounds, 2000, 311(1): 82-85.

• diffusion
• lanthanum
• oxygen
• cathode
• kinetics
• Mo-La2O3

The diffusion behavior of elements lanthanum and oxygen in Mo-La2O3 cathode has been carried out by using Auger Electron Spectroscopy. Lanthanum and oxygen ions (La3+ and O2+) diffuse from the grain boundaries to the surface. The experimental results were analyzed by kinetics of grain boundary diffusion. In the temperature range 1123 K-1423 K, the diffusion coefficients of La3+ and O2- ions were found to fit with the following expression:
D-La = 3.6703 x 10(-16) exp(-1.01639 x 10(5)/RT) m(2) s(-1)
D-O = 1.5122 x 10(-16) exp(-8.

• 出版日期2000-10-12
• 单位北京工业大学