Al_2O_3-MgO-Y_2O_3为烧结助剂对SiC陶瓷表面形貌的影响  

Effects of Y_2O_3-MgO-Al_2O_3 Additives on the Surface Morphology of the Silicon Carbide Ceramic

作　　者：张晓旭[1] 石秀丽[1] 朱强[1] 玛迪娜[1] 李志鹏[1] 董肖[1] 薛明明[1,2] 

机构地区：[1]伊犁师范学院物理科学与技术学院新疆凝聚态相变与微结构实验室,新疆伊宁835000 [2]南京大学物理学院国家固体微结构重点实验室,江苏南京210093

出　　处：《伊犁师范学院学报（自然科学版）》2015年第2期40-42,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<烧结工艺对碳化硅复合陶瓷性能影响的研究>(2013YSY028);新疆维吾尔自治区联合基金项目(2015211C300)

摘　　要：利用Al2O3-MgO-Y2O3为烧结助剂,在1900℃下无压烧结制备SiC陶瓷.用XRD和SEM分析SiC陶瓷表面氧化产物相组成和微观形貌.结果表明:烧结助剂为wt(2%Al2O3+4%MgO+4%Y2O3)所制备的SiC陶瓷所形成的颗粒较为光滑,且孔隙相对较小.This paperused Al2O3-MgO-Y2O3 as a sintering additives, Silicon carbide ceramics were prepared by pressing and sintering at 1900℃, the phase composition and surface morphology of oxidized products on the sur-face were studied by XRD and SEM methods. The results showed that, used wt（2%Al2O3＋4%MgO＋4%Y2O3） as a sin-tering additives, the particles of SiC ceramics were relatively smooth, and the pores is relatively small.

关 键 词：碳化硅陶瓷 烧结助剂 无压烧结 

分 类 号：TQ174.1[化学工程—陶瓷工业]