人工晶体学报2013，Vol.42Issue(4)：737-741,5.
成孔剂对堇青石蜂窝陶瓷孔结构和性能的影响
Effect of Pore-former on Pore Structure and Properties of Cordierite Honeycomb Ceramic
摘要
Abstract
Low thermal expansion cordierite honeycombs were prepared by one step sintering technique, using kaolin, talcum and α-Al2O3 micro-powders as main starting materials.Effects of particle size of foamed acrylic resin beads as the pore-former on the coefficient of thermal expansion ( CTE), water absorption and compressive strength of the prepared cordierite honeycombs were studied.The phase composition and cross-sectional morphology of the cordierite honeycombs were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM) , respectively.The results show that the distribution and structure of pores can be controlled by adjusting the size of foamed acrylic resin beads.The big pore quantity increases and the small pore quantity reduces with the increase of the size of the pore-former, while the total pore volume increases gradually.The addition of the pore-former shows no obvious influence on the phase composition of the prepared honeycombs.The CTE decreases from 1.46×10-6/℃ to 0.67 × 10-6/℃ when the pore volume increases from 0.13 cm3/g to 0.27 cm3/g, and then the CTE increases to 1.33×10-6/℃ with further increase of the pore volume to 0.33 cm3/g.The water absorption increases gradually with the increase of the pore volume, while the compressive strength decreases.关键词
堇青石/蜂窝陶瓷/成孔剂/热膨胀系数/孔容Key words
cordierite/ honeycomb ceramic/ pore-former/ coefficient of thermal expansion/ pore volume分类
化学化工引用本文复制引用
李月丽,刘建,胡华,彭红,王松林,张小珍..成孔剂对堇青石蜂窝陶瓷孔结构和性能的影响[J].人工晶体学报,2013,42(4):737-741,5.基金项目
高校省级优秀青年人才基金项目(2011SQRL144) （2011SQRL144）
国家自然科学基金资助项目(21171131) （21171131）
