Mechanisms of Texture Development in Lead-Free Piezoelectric Ceramics with Perovskite Structure Made by the Templated Grain Growth Process

Materials

Toshio Kimura¹  Yuan Yi² 

[1] Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan;

关键词: texture development;    microstructure;    BaTiO₃;    (K;    Na)NbO₃-based material;   

DOI  :  10.3390/ma3114965

来源: mdpi

【 摘 要 】

The mechanisms of texture development were examined for BaTiO₃ and a (K,Na,Li)(Nb,Ta)O₃ solid solution made by the templated grain growth method, and compared with the mechanism in Bi_0.5(Na,K)_0.5TiO₃. The dominant mechanism was different in each material; grain boundary migration in BaTiO₃, solid state spreading in Bi_0.5(Na,K)_0.5TiO₃, and abnormal grain growth in the (K,Na,Li)(Nb,Ta)O₃ solid solution. The factor determining the dominant mechanism is the degree of smoothness of surface structure at an atomic level.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland.