J. Phys. Colloques
Volume 51, Numéro C1, Janvier 1990Proceeding of the International Congress
Intergranular and Interphase Boundaries in materials
|Page(s)||C1-903 - C1-908|
CONCENTRATIONAL PHASE TRANSITION ON THE INTERPHASE BOUNDARIES Sn/Ge AND ON THE GRAIN BOUNDARIES IN TIN : INDIUM DIFFUSIONE.I. RABKIN, L.S. SHVINDLERMAN et B.B. STRAUMAL
Institute of Solid State Physics, URSS Academy of Sciences, Chernogolovka, Moscow district, 142432, U.R.S.S.
The diffusion of indium along  tin-germanium interphase twist boundaries and  twist grain boundaries in tin has been studied in the vicinity of the β - γ' transition in the Sn-In system. The temperature of the β - γ' transition in the interphase boundaries and in the grain boundaries is lower than that in the bulk and depends on the boundary misorientation angle. In the tin-germanium interphase boundaries, near the temperature of β - γ' boundary transition, strong violations of the arrhenius law were observed. The observed decrease of the phase transition temperature at grain boundaries and interphase boundaries is explained in terms of a prewetting transition at the boundaries.