Abstract
Recent progress in the science of composite materials has resulted in the introduction of multiphase composites, in which the reinforcement may be an inorganic material, metal, carbon (or any other substance) and the matrix, a high-strength polymer. For better adhesion of the main phases a polymeric encapsulation of the filler is used, which may be considered as a third intermediate pseudophase. On the other hand, metallic-metallic composites, as well as polymer-polymer composites develop between phases an intermediate pseudophase due to diffusion. In most of the interfaces in these composites the penetration of one phase into its neighbour phase is a two-way process. This is mainly due to diffusion, combined with adsorption and other types of interpenetra tion.
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