MgO加入量对Al_2O_3-SiC-C材料抗氧化性能的影响  

Effects of MgO Addition on Oxidation Resistance of Al_2O_3-SiC-C Material

作　　者：殷园园[1] 徐恩霞[2] 王秀莉[1] 杨东杰[3] Yin Yuanyuan Xu Enxia Wang Xiuli Yang Dongjie(High ＆ New Technology Research Center of Henan Academy of Sciences,Zhengzhou 450002, China School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China Henan Academy of Sciences , Zhengzhou 450002, China)

机构地区：[1]河南省科学院高新技术研究中心,郑州450002 [2]郑州大学材料科学与工程学院,郑州450001 [3]河南省科学院,郑州450002

出　　处：《河南科学》2016年第10期1650-1656,共7页Henan Science

基　　金：河南省基础与前沿技术研究项目(152300410024)

摘　　要：研究了加入MgO细粉对不烧Al_2O_3-Si C-C材料抗氧化性的影响,结果表明,加入MgO后Al_2O_3-Si C-C材料的抗氧化性明显下降,其原因是Mg O与材料中的Al_2O_3、SiO_2发生反应,破坏了莫来石致密层,使材料由原来的保护性氧化变为连续性氧化,导致材料的抗氧化性下降.In this paper,the effects of MgO addition on oxidation resistance of Al2O3-SiC-C material have been studied. The results show that MgO addition to Al2O3-SiC-C can lead to oxidation resistance decrease. The reason is that chemical reaction between MgO and Al2O3/SiO2 which destroied the compact lay of nulite,resulting in the change from protective oxidation to the continuous oxidation. Consequently,the property of oxdation resistance is decreased.

关 键 词：Al2O3-SiC-C材料 MGO 抗氧化性 

分 类 号：TQ175[化学工程—硅酸盐工业]