Evolution of connectivity patterns and links between interfaces and piezoelectric properties of two-component composites

摘要

We report the results of studying the evolution of alpha-beta connectivity patterns and the role of systems of interfaces inherent in two-component piezoactive composites. A scheme demonstrating links between so-called 'junction' 2-2, 1-1, 1-3, and 3-1 connectivity patterns, and all the rest alpha-beta connectivity patterns (alpha, beta = 0, 1, 2, and 3) is first put forward. Important features of the evolution of the connectivity patterns and versions of the formation of the alpha-beta ceramic/polymer composite structures are discussed. On the basis of the approach developed in this paper the 1-2 ceramic/polymer composite (point symmetry group mm(2)) and some peculiarities of its piezoelectric properties are first analysed. Physical and microstructural reasons for an original competition between effective piezoelectric coefficients d(31)*, and d(32)* or e(31)*, and e(32)*, as well as reasons for max C-33* of the 1-2 composite are considered in connection with concentration behaviour of piezoelectric properties of the 1-1 and 1-3 composites. [References: 30]