人工晶体学报2011，Vol.40Issue(3)：630-634,638,6.
络合溶胶-凝胶法制备不同形貌的莫来石微晶
Preparation of Mullite Microcrystallites with Different Morphology by Complexing Sol-gel Method
摘要
Abstract
Mullite powders were prepared by sol-gel process using TEOS and Al( NO3 )3 · 9H20 as raw materials. Mullite with varied morphology were produced by adding different complexing agent such as .oxalic acid, citric acid and ethylene diamine tetraacetic acid (EDTA) in the reaction. The phase composition, morphologies and element distribution of the as-prepared powders were characterized by differential thermal analysis ( DTA ), X-ray diffraction ( XRD ), FTIR Spectrometer ( FTIR ), energy dispersive spectroscopy(EDS) and scanning electron microscope(SEM). The results show that the initial temperature of the mullitization of gels is about 1046 ℃, but the temperature of pure mullite should be at 1300 ℃. Mullite powders with morphologies of grain-like, rod-like, cluster-like and flower-like could be prepared by adding different complexing agent.关键词
莫来石/微晶/络合剂/溶胶-凝胶法Key words
mullite/ microcrystallites/ complexing agent/ sol-gel method分类
通用工业技术引用本文复制引用
杨强,黄剑锋,杨婷,曹丽云,吴建鹏..络合溶胶-凝胶法制备不同形貌的莫来石微晶[J].人工晶体学报,2011,40(3):630-634,638,6.基金项目
教育部博士点基金(20070708001) （20070708001）
陕西科技大学博十科研基金(BS08-09) （BS08-09）
教育部新世纪优秀人才支持计划基金(NECT-06-0893)资助项目 （NECT-06-0893）
陕西科技大学科研创新团队基金(TD09-05) （TD09-05）
陕西科技大学研究生创新基金 （）
