降低堇青石材料热膨胀系数的途径  

Approaches to Decrease Thermal Expansion Coefficients of Cordierite

作　　者：杨道媛[1] 朱凯[1] 毋娟[1] 陈德良[1] 张锐[1] 

机构地区：[1]郑州大学材料科学与工程学院,郑州450001

出　　处：《材料导报（纳米与新材料专辑）》2009年第2期200-202,共3页

基　　金：河南省杰出青年基金(084100510003)

摘　　要：堇青石材料热膨胀系数低,是优良的高温抗热震材料,但我国目前生产的堇青石材料热膨胀系数还有待进一步提高。综述了降低堇青石材料热膨胀系数的各种途径,包括调整材料的化学矿物组成、优化制备工艺和后期处理等,指出今后发展的方向是利用负膨胀材料开发低膨胀乃至零膨胀的堇青石材料,以期促进优质堇青石材料的研究与开发。Cordierite is an excellent anti-heat-shock material at high temperature because of its low thermal expansion coefficient. However, there is something to do for decreasing the thermal expansion coefficient. A few me thods to decrease the thermal expansion coefficient of cordierite are summarized, including adjusting chemical mineral compositions,optimizing preparation process, and post-processing. Using negative expansion materials to explore cordierite materials with low and even zero expansion coefficients is pointed out as the development direction. These researches will promote the development of low-thermal-expansion-coefficient cordierite materials.

关 键 词：堇青石 热膨胀系数 制备工艺 后期处理 负膨胀材料 

分 类 号：TQ175.718[化学工程—硅酸盐工业] TQ174.758