原料颗粒度对(K,Na)NbO_(3)基陶瓷压电性能的影响  

Effect of Raw-material Granularity on Piezoelectric Properties of(K,Na)NbO_(3)Based Ceramics

作　　者：姚卫增 YAO Wei-zeng(School of Physics and Electronic Engineering,Heze University,Heze Shandong 274015,China)

机构地区：[1]菏泽学院物理与电子工程学院,山东菏泽274015

出　　处：《菏泽学院学报》2024年第5期38-46,共9页Journal of Heze University

基　　金：菏泽学院博士基金项目(XY20BS06)。

摘　　要：原料是制备高质量陶瓷的基础,原料颗粒度和均匀性是制备高品质陶瓷的约束条件之一.采用原料预球磨的方法有效地降低了原料的颗粒度,对比研究了预球磨前后原料颗粒度对混合粉体形貌和陶瓷样品压电性能的影响.结果表明,预球磨处理的原料混合物粉体的颗粒度比未经处理的原料混合物料体的颗粒度更小、分散更均匀,进而将所制备的(K_(0.45)Na_(0.55))_(0.98)Li_(0.02)Nb_(0.76)Ta_(0.18)Sb_(0.06)O_(3)陶瓷的压电常数d 33的最大值从345 pC/N提高到了393 pC/N.Raw materials are the foundation for preparing high-quality ceramics,and their particle size and uniformity is a part of the constraints for preparation.This article uses the method of pre-ball-milling of raw materials to effectively reduce particle size,and compares the effects before and after pre-ball-milling on the morphology of mixed powders and the piezoelectric properties of ceramic samples.The results show that the particle size of the pre-ball-milling raw material mixture powder is smaller and more evenly dispersed than that of the untreated mixture.And thus the maximum piezoelectric constant d 33 of the(K_(0.45)Na_(0.55))_(0.98)Li_(0.02)Nb_(0.76)Ta_(0.18)Sb_(0.06)O_(3)ceramics is increased from 345 pC/N to 393 pC/N.

关 键 词：KNN陶瓷 原料颗粒度 预球磨 压电性能 

分 类 号：TQ174[化学工程—陶瓷工业]