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Kombinovaný difúzní režim nízkorozpustné příměsi v polykrystalu – Modelový systém – Ge v Mg a ve slitině Mg-1,8 wt.% Al
Čermák, Jiří
Unusual diffusion regime observed in a case of extremely low-soluble element in Mg alloys was described. The low solubility of diffusant was found to affect significantly the transport properties in the range, where the volume diffusion usually operates. The proposed way of data evaluation enabled calculation of segregation factor of Ge in Mg and in alloy Mg – 1.8 wt. % Al. Temperature dependence of measured diffusion coefficient in grain boundary, Db, grain boundary diffusivity, P, and temperature dependence of calculated segregation factor, s, obey the Arrhenius relation.

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