Ed. Mccarty et Sa. Hackney, THE MORPHOLOGICAL STABILITY OF LATERAL GROWTH IN SOLID-SOLID PHASE-TRANSFORMATION DURING THIN-FILM INTERDIFFUSION IN AL CU BIMETAL FILMS/, Metallurgical and materials transactions. A, Physical metallurgy andmaterials science, 25(8), 1994, pp. 1613-1625
This article describes the phenomenon of morphological instability in
solid-solid phase transformations during thin-film interdiffusion, spe
cifically related to the initial stages of precipitation when phase gr
owth occurs along the interface between thin films. The experimental o
bservations that revealed this effect will be presented, and a working
hypothesis will be discussed. Experimental observations suggest that
the ledge mechanism of growth is present in this system but does not i
nhibit the formation of interfacial instabilities. It is proposed that
morphological stability for solid-phase growth occurring during thin-
film interdiffusion can be treated by the inclusion of a solute-source
term into the two-dimensional perturbation approach generally used to
study unstable growth morphologies. Experimental observations that pr
ovide qualitative and semiquantitative support for the solute-source m
odel are also presented.