文献类型：期刊文献

中文题名：粉体的球磨方式对 Li_(1.0)Nb_(0.6)Ti_(0.5)O_3锂铌钛陶瓷烧结 行为及微波介电性能的影响

英文题名：EFFECT OF POWDER MILLING TECHNIQUE ON SINTERING BEHAVIOR AND MICROWAVE DIELECTRIC PROPERTIES OF Li_(1.0)Nb_(0.6)Ti_(0.5)O_3 CERAMICS

作者：曾群[1];李蔚[2];施剑林[1];董显林[1];郭景坤[1]

机构：[1]中国科学院上海硅酸盐研究所,上海200050;[2]华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室,上海200237

年份：2007

卷号：35

期号：9

起止页码：1181

中文期刊名：硅酸盐学报

外文期刊名：Journal of The Chinese Ceramic Society

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：微波介电性能;锂铌钛陶瓷;普通球磨;砂磨

外文关键词：microwave dielectric properties; Li1.0Nb0.6Ti0.5O3 ceramics; ordinary milling; attrition milling

摘要：通过 X 射线衍射、扫描电镜等分析手段结合介电性能测试结果,探讨了不同球磨方式(普通球磨及砂磨)制备的粉体对 Li_(1.0)Nb_(0.6)Ti_(0.5)O_3 (LNT)锂铌钛陶瓷的烧结行为、微观结构及微波介电性能的影响。用砂磨的方式粉碎粉体,获得了粒度分布均匀且分散性很好的粉体,在一定程度上降低了LNT 陶瓷的烧结温度。另外,通过砂磨粉碎的粉体烧结而得到的陶瓷样品密度、相对介电常数(εr)及机械品质因数与谐振频率的乘积(Q×f)均高于普通球磨工艺制备的。结果表明:在1050 ℃烧结的陶瓷其具有相对优异的微波介电性能,εr =69.9,Q×f =5 887 GHz,谐振频率温度系数τf =28.3×10–6/℃。
Effects of the powder milling technique （ordinary milling and attrition milling） on the sintering behavior and microwave dielectric properties of Li1.0Nb0.6Ti0.5O3（LNT） ceramics were investigated by X-ray diffraction, scanning electron microscope and the measured dielectric properties. Much more homomorphous powder could be obtained by the attrition milling technique, and also the sintering temperature of the LNT ceramics could be lowered to some extent by attrition milling powders. In addition, the LNT ceramic samples prepared by the attrition milling powders had higher densities, relative dielectric constants （εr）, and mechanical quality factors plus resonant frequency （Q×f） than those of the ceramic samples prepared by the ordinary milling. Good microwave dielectric properties of εr= 69.9, Q×f=5887 GHz and resonance frequency temperature coefficient τf= 28.3×10^-6℃ were obtained for the ceramics sintered at 1050℃.