Effect of Temperature and Phase Constitution on Kinetics of La Diffusion
摘要
The diffusion of La ine－Fe2-3N(e)andν′-Fe4N(ν′)phases produced by plasma nitriding was studied.It is found that with increasing nitriding time,theephase continuously decomposes into ν′one under employed experimental condition and compared with ν′phase ore+ν′ones,the mono oneehas an impedient effect on depth of La diffusion,The growth of La layer in dual phases and mono one follows an approximate exponential law and a parabolic one ,respectively,and this kinetics law does not change with increasing temperature,The effect of increasing temperature in the range of 520to560℃on La diffusion depth is less than that of phase constitution change such as the decompostition ofephase intoν′one.
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阎牧夫, Y. Sun. Effect of Temperature and Phase Constitution on Kinetics of La Diffusion[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2002.
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