Abstract
In this study, crystal orientation analysis of metal-core piezoelectric fiber that embedded in aluminum matrix was investigated. Piezoelectric ceramics are widely used due to their piezoelectric effect as excellent transducers. In other hands, there is a problem that the piezoelectric ceramics very brittle. In order to solve this problem, it was successful that embedding a metal-core piezoelectric ceramics fiber in an aluminum matrix without fracture by using the Interphase Forming/Bonding method that proposed by Asanuma. While this process, compression residual stress is applied to the metal-core piezoelectric ceramics fiber due to difference of coefficients of thermal expansion between the fiber and the matrix. The purpose of this study is evaluation of the polarization of the fiber under the residual stress by EBSD (Electron Back Scatter Diffraction patterns) analysis. According to the results, orientation of (001) that is axis of the polarization into poling direction was disturbed by the residual stress. This means that movement of off-center ion in perovskite structure was obstructed by the residual stress.
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