非平衡界面动力学理论

王海丰, 蒲振新, 张建宝

Non-Equilibrium Interface Dynamics Theory

WANG Haifeng, PU Zhenxin, ZHANG Jianbao

图5 跨界面溶质扩散示意图

Fig.5 Schematics for solute trans-interface diffusion in one step (a) and two steps (b) (For the former, there is only one flux for solute trans-interface diffusion, i.e., $J_{D}$ = $J_{B}^{L *}$ = $(C_{L}^{*} - C_{S}^{*}) V / V_{m}$ , whereas for the latter, there are two fluxes for solute trans-interface diffusion, i.e., $J_{D}^{S \to I}$ = $(C_{t r a n s}^{*} - C_{S}^{*}) V / V_{m}$ = $- J_{B}^{S *}$ and $J_{D}^{I \to L}$ = $(C_{L}^{*} - C_{t r a n s}^{*}) V / V_{m}$ = $J_{B}^{L *}$ . J_D—the flux of solute trans-interface diffusion, $J_{D}^{S \to I}$ —the flux of trans-interface diffusion from solid phase to interface, $J_{D}^{I \to L}$ —the flux of trans-interface diffusion from interface to liquid phase, $C_{t r a n s}^{*}$ —the solute component at the interface that finally crosses the interface and enters the solid phase, V—the velocity of the migrating interface, V_m—mole volume)