ZHOU  Limin ¹ FANG  Bijun ¹ LI Xiangdong ²

(1.Department of Material Sciences and Technology, Jiangsu Polytechnic University, Changzhou 213164; 2. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240)

Abstract:As a kind of lead -free piezoelectric ceramics with good prospect, development and application of sodium bismuth titanate (Bi_1/2Na_1/2TiO₃, BNT)-based ceramics have become the concern of scientists. The morphology and homogeneity of chemical composition of ceramic powders have an inevitable effect on the structure and electrical properties of the ceramics.In this paper, several methods used in recent years for synthesis of BNT-based lead-free piezoelectric ceramic powders are reviewed. The principle and process of every method are introduced, and the advantages and disadvantages of these methods are discussed.

Keywords:sodium bismuth titanate, piezoelectric ceramics, powder, synthesis technology