CAJ | 학술논문

通常固体中的扩散被认为是单原子扩散问题，并形成完善的平衡偏聚理论.非平衡偏聚过程是伴随着空位在晶界的湮灭过程发生的.晶界上可同时存在平衡偏聚与非平衡偏聚，存在一个偏聚转折温度，在此温度以上，非平衡偏聚起主导作用，此温度区以下，平衡偏聚为主导.复合体扩散机制可以圆满的解释非平衡偏聚现象.
통상고체중적확산피인위시단원자확산문제，병형성완선적평형편취이론.비평형편취과정시반수착공위재정계적인멸과정발생적.정계상가동시존재평형편취여비평형편취，존재일개편취전절온도，재차온도이상，비평형편취기주도작용，차온도구이하，평형편취위주도.복합체확산궤제가이원만적해석비평형편취현상.
Diffusion in solides has been interpreted by mature theory of Equilibrium Segregation which is based on single atom diffusion. Non-Equilibrium Segregation takes place with the vacancies annihilating in grain boundaries. Equilibrium Segregation and Non-Equilibrium Segregation can coexist at grain boundaries, and there is a segregation transition tempreture. Above the tempreture, Non-Euilibrium Segregation plays the predominant role and below the tempreture Equilibrium Segregation plays the predominant role. On the base of vacancy-solute atom complexes diffusion, Non-Equilibrium Segregation can be satisfactorily interpreted.