Spatio-temporal instabilities of the Kirkendall marker planes during interdiffusion in β'-AuZn

Autor: M. J. H. Van Dal, A. M. Gusak, C. Cserháti, A. A. Kodentsov, F. J. J. Van Loo
Přispěvatelé: Materials and Interface Chemistry
Jazyk: angličtina
Rok vydání: 2002
Předmět:
Zdroj: Philosophical Magazine A : physics of condensed matter, structure, defects and mechanical properties, 82(5), 943-954. Taylor and Francis Ltd.
ISSN: 0141-8610
Popis: A Kirkendall-effect-mediated behaviour (migration) of fiducial markers originally situated at the contact surface of a diffusion couple can be complex in both temporal and spatial domains. A phenomenological approach based on a concept of the Kirkendall velocity construction is used to rationalize the movement of the inert markers upon diffusion-controlled growth of the g 'AuZn intermetallic phase. It is demonstrated (experimentally as well as theoretically) that the Kirkendall marker planes can be multiple, stable or unstable within the single-phase reaction product. A general criterion of the microstructural instability of the Kirkendall plane is introduced.
Databáze: OpenAIRE