Research Progress of Barium Titanate and Potassium Sodium Niobate Lead-Free Piezoelectric Ceramics

Abstract

Abstract: Barium titanate (BaTiO₃) and potassium sodium niobate (K_0.5Na_0.5NbO₃) piezoelectric ceramics have become the forefront of international high-tech materials research due to their environmental friendliness, excellent electrical properties and proper curie temperature, and were expected to replace some lead-based piezoelectric ceramics in electronic devices in the fields of national defense, aerospace and communications, etc. In this paper, the latest research progress of BaTiO₃ and K_0.5Na_0.5NbO₃ piezoelectric ceramic materials was reviewed, the aspect of constructing phase boundary to regulate the piezoelectric performance, designing the material system of BaTiO₃-based piezoelectric ceramics, the thermal stability and improvement of K_0.5Na_0.5NbO₃-based piezoelectric ceramics and the new molding and sintering process of piezoelectric ceramics were analyzed and summarized objectively. Finally, future development trend of the two kinds of materials was discussed, and a reference for the development of high-performance lead-free piezoelectric ceramics was provided.

Key words: lead-free piezoelectric ceramics, K_0.5Na_0.5NbO₃, BaTiO₃, phase boundary, thermal stability

CLC Number:

TQ174.7

XU Minghao, HUA Kaihui, ZENG Qun, DI Bo, ZHENG Yu, WANG Hongxiang, ZHANG Guoxiang. Research Progress of Barium Titanate and Potassium Sodium Niobate Lead-Free Piezoelectric Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(2): 649-658.

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