Berlin 2005 – scientific programme
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M: Metallphysik
M 16: Phasenumwandlung I
M 16.6: Talk
Saturday, March 5, 2005, 10:30–10:45, TU H1058
Interface thermodynamics of multi-layered systems — •Ferdinand Sommer — MPI for Metals Research, Stuttgart
The basic objective is to understand the formation and stability of the interface(s) and the interface phases (amorphous or crystalline) that are developed between thin metallic layers in contact. The driving force for the formation of interface phases of multilayered systems has been evaluated. Surface and interface energies and the enthalpy of formation of interface phases have been analysed on the basis of the Miedema model(1). The entropy contributions are derived from a model developed for the excess entropy of solutions(2). Some results are compared with experimental data.
(1) F. R. de Boer, R. Boom, W. C. M. Mattens and A. K. Niessen, in Cohesion in Metals: Transition Metal Alloys, North Holland, Amsterdam (1988)
(2) F. Sommer, R.N. Singh and V. Witusiewicz, J. Alloys Comp. 325 (2001) 118