YOCl-MgO助烧剂配比对SiC陶瓷烧结及性能的影响  

Study on Sintering and Properties of Silicon Carbide Ceramics with YOCl-MgO Additives

作　　者：董肖 孔维静 Dong Xiao;KongWeijing(Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matter Physics,College of Physical Science and Technology,Yili Normal University,Yining,Xinjiang 835000,China)

机构地区：[1]伊犁师范大学物理科学与技术学院新疆凝聚态相变与微结构实验室

出　　处：《伊犁师范学院学报（自然科学版）》2019年第2期33-36,57,共5页Journal of Yili Normal University：Natural Science Edition

基　　金：伊犁师范大学一般项目(2015YSYB28);自治区自然科学基金青年项目(2015211C300)

摘　　要：采用无压液相烧结方法,制备助烧剂YOCl/MgO配比不同,总量为9%(质量分数)的SiC陶瓷.对陶瓷样品的晶体结构和表面微结构进行了检测分析,并研究讨论了助烧剂配比对SiC陶瓷介电性能的影响.结果表明:随着YOCl添加量的增多,陶瓷样品中SiO2的量在减少.在220~340 K温度范围内样品的相对介电常数整体较小,同时介质损耗均在0.2以下.Pressureless liquid phase sintering method was adopted to fabricate SiC ceramics with 9 wt%YOCl-MgO additives,YOCl/MgO has different ratios.Crystal structure and surface micro-structure of the ceramic samples were analyzed,and the influence of the YOCl/MgO ratio on the dielectric properties of samples was studied.The result shows that:With the increase of YOCl added,the amount of SiO2 has reduced in the samples.The relative dielectric constant of the samples in the temperature range 220-340 K is Smaller overall,and the dielectric loss is less than 0.2.

关 键 词：SIC陶瓷 稀土氯氧化物 介电常数 

分 类 号：TQ174.75[化学工程—陶瓷工业]