Investigating the effect of interphase region on the elastic modulus of metal/graphene nanocomposites

The strength of metal nanocomposites is significantly influenced by the interaction between the filler and the matrix. Previous research indicates that when the filler is embedded in the matrix phase, it is surrounded by an interphase region. The geometric and mechanical properties of this interphase region greatly impact on the composite's overall mechanical characteristics. This study investigates how the thickness and elastic modulus of the interphase region affect the elastic modulus of metal/graphene nanocomposites. Graphene particles, modeled as ellipsoids with a high aspect ratio, are dispersed within the matrix and encased by an interphase layer. Initially, equations for a single particle are derived and then extended to the entire composite using mean field theory. The mechanical properties of the interphase region are estimated through a mathematical model, and the composite's elastic modulus is determined for various filler volume fractions. The findings reveal that the interphase region plays a crucial role in determining the nanocomposite's elastic modulus.

کلیدواژه ها:

Interphase region ، Elastic modulus ، Metal/graphene nanocomposites ، Mean field theory