论文部分内容阅读
用电子探针显微分析研究了具有<100>对称倾侧晶界的Nb双晶中铬的晶界扩散。在1118℃～1355℃的温度范围内测定了扩散系数和激活能。除了在靠近重位点阵晶界处扩散速率有一最小值外,一般随双晶错向角的增加晶界扩散也增强。
The grain boundary diffusion of chromium in Nb twins with <100> symmetrical tilted grain boundaries was investigated by electron probe microanalysis. The diffusion coefficient and the activation energy were measured in the temperature range of 1118 ° C to 1355 ° C. Except for a minimum diffusion rate near the re-entryed grain boundaries, the grain boundary diffusion generally increases with the increase of the twin angle error.