科研之友
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摘要
A simple model to estimate the work of adhesion in reactive metal/ceramic systems was developed based on the basic physicochemical principle. The work of adhesion in this model is composed of two terms. One is the Gibbs free energy change per unit area released by the reaction between the surface phases of the metal and the substrate ceramic. The other is the contribution of the work of adhesion for the metal on the initial substrate or on the reaction product formed during reaction. The present model is generally valid for not only the systems with a new phase formed at the interface, but also the ones with localized chemical bonds at the interface, and can unravel some confusion in the literature.
