烧结助剂及Mo含量对AlN-Mo复合陶瓷热导率的影响  

Effects of Sintering Additives and Mo Content on the Thermal Conductivity of AlN-Mo Composite Ceramic

作　　者：董桂霞[1] 胡建岗[1] 刘秋香[1] 贾成厂[2] 

机构地区：[1]河北联合大学材料科学与工程学院,河北省无机非金属材料重点实验室,唐山063009 [2]北京科技大学新材料研究学院,北京100083

出　　处：《材料导报》2012年第10期113-115,118,共4页Materials Reports

基　　金：国际科技合作项目(2010DFR50360)

摘　　要：以CaF2、CaCO3为烧结助剂,采用热压烧结法制备了AlN-Mo复合材料。利用XRD和SEM分析了AlN-Mo复合陶瓷的相组成及其微观形貌,并讨论了烧结助剂和Mo含量对该材料热导率的影响。结果表明,CaF2和CaCO3烧结助剂的添加量在1%～3%(质量分数)范围内,AlN-Mo复合材料的热导率随着CaF2含量的增加而升高,随着CaCO3含量的增加先升高后降低。在烧结助剂的种类和含量一定时,含20%(体积分数)Mo的AlN-Mo复合陶瓷的热导率高于含18%(体积分数)Mo的AlN-Mo复合陶瓷的热导率。With CaF2, CaCO3 as sintering additives, AIN-Mo composites was prepared using hot pressed sintering The phase composition and morphology of AIN-Mo composite ceramics were analysised using XRD and SEM. Further, the effects of sintering additive and Mo content on the materials were discussed. The results show that CaF2 and CaCO3 addition of sintering additives in the 1wt%-3wt% range, the thermal conductivity of AIN-Mo composites increases with increasing CaF2 content; with the increasing of CaCO3 content, first increases and then decreases. Sintering additives in a certain type and content, the thermal conductivity with 20vol% Mo of AIN-Mo composite ceramics is higher than containing 18vol% Mo.

关 键 词：烧结助剂 MO AlN-Mo复合材料 热导率 

分 类 号：TQ174[化学工程—陶瓷工业]