摘要
以Al_2O_3和La_2O_3作为烧结助剂,在1900℃下采用无压烧结技术制备了SiC陶瓷,用XRD、SEM方法对陶瓷样品的微观结构及表面形貌进行了检测分析.结果表明:烧结体中主晶相均为6H-Si C相,烧结助剂Al_2O_3与La_2O_3体积比为2∶8时所制备的陶瓷样品颗粒较为光滑,且孔隙相对较少.
SiC ceramics were fabricated by the pressing and sintering technology at 1900 ℃ with Al2O3 and La2O3 as sintering additives. The phase composition and SiC ＋ （Al2O3＋La2O3） ceramics were analyzed by XRD and SEM. The thermal conductivity of SiC ceramics was also discussed. The results show that, the main crystal phase in the sintered body are 6H-SiC. Volume ratio of 2 ： 8 was prepared by SiC ceramic particles formed by Smooth, less porosity.
出处
《伊犁师范学院学报（自然科学版）》
2015年第4期33-35,共3页
Journal of Yili Normal University：Natural Science Edition
基金
伊犁师范学院研究生科研创新项目<Al2O3-La2O3烧结助剂对SiC陶瓷烧结和导热性能影响>(2015YSY032)
关键词
无压烧结
烧结助剂
表面形貌
Non-pressurized
Sintering additives
Surface morghology
