A higher gradient theory for solid mixtures | Zendy

Müller W.H. | Zendy; Brandmair A. | Zendy

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A higher gradient theory for solid mixtures

Author(s) -

Müller W.H.,

Brandmair A.

Publication year - 2008

Publication title -

pamm

Language(s) - English

Resource type - Journals

ISSN - 1617-7061

DOI - 10.1002/pamm.200810449

Subject(s) - spinodal decomposition , intermetallic , thermodynamics , high entropy alloys , alloy , materials science , binary number , statistical physics , microstructure , reliability (semiconductor) , diffusion , entropy (arrow of time) , mathematics , metallurgy , chemistry , physics , phase (matter) , power (physics) , arithmetic , organic chemistry

During use the microstructure of solders will change over time. To enable us to determine the lifetime and reliability of these materials, a theory to predict such changes is needed. In this paper two kinds of changes are considered: The forming of intermetallic compounds due to chemical reactions of two components and spinodal decomposition of a binary alloy followed by coarsening. A theoretical approach is presented and evaluated numerically. For this purpose, an extended diffusion equation is needed and derived within the framework of undisputed concepts of the entropy principle. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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