Investigation of anisotropic diffusion behavior of Zn in hcp Mg and interdiffusion coefficients of intermediate phases in the Mg–Zn system
作者： Sazol K. Das , Young-Min Kim , Tae Kwon Ha , In-Ho Jung
DOI: 10.1016/J.CALPHAD.2013.07.002
关键词: Crystallography 、 Analytical chemistry 、 Basal plane 、 Anisotropic diffusion 、 Diffusion (business) 、 Materials science 、 Grain boundary diffusion coefficient 、 Zinc 、 Intermetallic 、 Magnesium alloy 、 Effective diffusion coefficient
摘要: The anisotropic diffusion behavior of Zn in hcp Mg was for the first time experimentally investigated using diffusion couple experiments with Mg single crystals at temperatures between 553 and 603 K (280 and 330° C). The diffusion coefficients determined from Zn concentration profiles in hcp Mg single crystals are: D⊥ hcp− Mg Zn= 4.98× 10− 5 exp (− 132725/RT) m 2/s along the basal plane and D llhcp− Mg Zn= 7.33× 10− 5 exp (− 135488/RT) m 2/s normal to the basal plane. The diffusion coefficient of Zn along the basal …
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