摘要
采用常压烧结方法,于氩气氛保护下,烧结温度分别为1 750℃、1 800℃和1 900℃,制备以LaOCl-MgO为烧结助剂的碳化硅复合陶瓷,探究不同烧结温度对陶瓷形貌与结构的影响.采用XRD和SEM对各样品进行物相分析和表面形貌的检测,结果表明:不同烧结温度下制备的陶瓷样品,主晶相均为6H-SiC,无新相产生;随着烧结温度的增加,陶瓷样品的失重率有递增趋势;各样品的晶粒尺寸分布较为均匀,均分布在1~4μm之间;烧结温度为1 800℃时制备的样品孔隙较少,致密性相对较高.
The atmospheric pressure sintering method,in argon atmosphere,sintering temperature of 1 750℃respectively,1 800℃and 1 900℃,the preparation for LaOCl-MgO style silicon carbide composite ceramic sintering additives,to explore the influence of different sintering temperature on ceramic surface morphology and structure.By using XRD and SEM phase analysis and surface morphology of the samples testing,the results showed that the preparation of ceramic samples under different sintering temperature,the main crystalline phases are 6H-SiC,generating new phase;With the increase of sintering temperature,the weightlessness rate of ceramic sample has increasing trend;Grain size distribution is relatively uniform,the samples are distributed between 1~4 microns;Sintering temperature of 1 800℃when preparation of the sample of the pore is less,relatively high density.
作者
孔维静
萨娜
马玉兰
李志鹏
周恒为
董肖
KONG Wei-jing;SA Na;MA Yu-lan;LI Zhi-peng;ZHOU Heng-wei;DONG Xiao(Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matter Physics,College of Physical Science and Technology,Yili Normal University,Yining,Xinjiang 835000,China)
出处
《伊犁师范学院学报（自然科学版）》
2018年第1期39-42,共4页
Journal of Yili Normal University：Natural Science Edition
基金
伊犁师范学院一般项目(2015YSYB28)
伊犁师范学院2016年度研究生科研创新项目(2016YSYB28)
关键词
碳化硅陶瓷
烧结温度
物相分析
表面形貌
Silicon carbide Ceramics
Sintering temperature
Phase analysis
Surface morphology
作者简介
孔维静(1992—),女,伊犁师范学院在读研究生,主要研究方向:凝聚态物理.;通信作者:董肖,男,讲师,研究方向:碳化硅复合陶瓷.
