硅灰粉尘添加量对莫来石-堇青石复相材料晶相结构与性能影响  

The Influence of Additive Content of Silica Fume on the Structure and Properties of Millite-cordierite Polyphase Material

作　　者：于岩[1] 阮玉忠[1] 周巧琴[1] 杜育红[1] 吴万国[1] 林春莺[1] 

机构地区：[1]福州大学材料科学与工程学院,福州350002

出　　处：《Chinese Journal of Structural Chemistry》2003年第2期215-220,共6页结构化学（英文）

摘　　要：采用XRD和SEM法确定莫来石-堇青石复相材料的晶相结构及其含量。探讨不同含量硅灰粉尘对复相材料的晶相结构与性能的影响。实验结果表明:复相材料中存在α-堇青石、β-堇青石、μ-堇青石和莫来石四种晶相。堇青石含量随着硅灰粉尘结合剂含量的增加而增加。莫来石含量随着结剂含量的增加而减少。根据结构上的分析结果,确定2#为最隹的配方,其堇青石和莫来石含量分别为66.0%和33.7%,抗折强度为27.69Mpa,1次和10次热震抗折强度保持率分别为63.36%和33.7%,体积密度为2.69 g/cm3.The polycrystalline structure of mullite-cordierite polyphase material and its contents were determined by XRD and SEM, respectively. The influence of different contents of silica fume on the structure and properties of the polyphase material was discussed. It is demonstrated that four crystalline phases, alpha-Cordierite, beta-cordierite, mu-cordierite and mullite, exist in the polyphase material. The content of cordierite increases while that of the mullite decreases with the increase of silica fume. The optimum formulation is as follows: cordierite 66.3%, mullite 33.7% (one time) and 47.35% (ten times), and bulk density of 2.69 g/cm(3).

关 键 词：复相材料 晶相结构 硅灰粉尘 莫来石 堇青石 耐火材料 

分 类 号：TQ175[化学工程—硅酸盐工业]