A Duplex Grain Structure of Dense(K,Na)NbO_(3) Ceramics Constructed by Using Microcrystalline as Seed

作     者：LIU Liangliang JIANG Xinyu Lü Rui GUO Zhuangzhuang HOU Zhaoping 刘亮亮;JIANG Xinyu;LüRui;GUO Zhuangzhuang;HOU Zhaoping

作者机构：College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2022年第37卷第3期

页      面：385-392页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the National Natural Science Foundation of China(No.51502191) Fundamental Research Program of Shanxi Province(No.202103021224080) 

主　　题：niobate piezoelectric ceramics microstructure microcrystalline 

摘      要：A new raw material was developed for the preparation of dense(K,Na)NbO_(3)(KNN)*** the absence of dopants,two kinds of KNN powder,calcined and microcrystalline powder,were used as matrix and seed to construct a duplex grain *** former was synthesized by the traditional solid phase reaction method and the latter by molten salt *** effects of microcrystalline powder content on sintering behavior,microstructure and electric properties were *** was found that appropriate microcrystalline powder content(x=0.4)promoted the grain growth and the gas diffusion,which resulted in a denser duplex grain structure and obtained a wide sintering temperature *** work gives a basic raw material system for the development of high performance KNN *** addition,it also provides a new way to prepare dense ceramics by the design of a duplex structure.