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周美玲
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期刊论文
A study of diffusion behavior of elements lanthanum and oxygen in
Journal of Alloys and Compounds 311(2000)82-85，-0001，（）：
The diffusion behavior of elements lanthanum and oxygen in Mo–La O cathode has been carried out by using Auger Electron 2 3 31 21 Spectroscopy. Lanthanum and oxygen ions (La and O) diffuse from the grain boundaries to the surface. The experimental results 31 were analyzed by kinetics of grain boundary diffusion. In the temperature range 1123 K-1423 K, the diffusion coefficients of La and21 O ions were found to fit with the following expression: 216 5 2 21 D 53.6703310 exp(21.01639310 /RT) m s La 216 4 2 21 D 51.5122310 exp(28.13066310 /RT) m s O
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