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凝胶玻璃网络稳定性与析晶分析
引用本文:韩良恺,沐仁旺,纪宪明,蒋晓龙,张栋杰. 凝胶玻璃网络稳定性与析晶分析[J]. 材料科学与工程学报, 2003, 21(6): 894-897
作者姓名:韩良恺  沐仁旺  纪宪明  蒋晓龙  张栋杰
作者单位:1. 南通师范学院物理系,江苏,南通,226007
2. 南京师范大学材料重点实验室,江苏,南京,210097
摘    要:利用溶胶-凝胶方法制备了:BaO-TiO2-Al2O3-SiO2体系的凝胶玻璃,以及其不同晶相的玻璃陶瓷。利用X-衍射分析确定凝胶玻璃析出的晶相。利用晶格能对凝胶玻璃的稳定性与析晶特性进行了定性分析。在凝胶玻璃的析晶过程中,品格能大者优先析晶。BaO-TiO-Al2O3-SiO2体系凝胶玻璃析出离子晶体的晶格能由大到小依次为BaTiO3、Ba2TiSi2O8、BaAl2Si2O8,这与实验结果的析晶次序一致。

关 键 词:凝胶玻璃 网络稳定性 溶胶-凝胶法 晶格能 热力学 玻璃陶瓷
文章编号:1004-793(2003)06-0894-04
修稿时间:2003-03-11

Stability and Analysis of Crystallization in Gel-glass System
HAN Liang-kai+,MU Ren-wang+,JI Xian-ming+,JIANG Xiao-long+,ZHANG Dong-jie+. Stability and Analysis of Crystallization in Gel-glass System[J]. Journal of Materials Science and Engineering, 2003, 21(6): 894-897
Authors:HAN Liang-kai+  MU Ren-wang+  JI Xian-ming+  JIANG Xiao-long+  ZHANG Dong-jie+
Affiliation:HAN Liang-kai+1,MU Ren-wang+1,JI Xian-ming+1,JIANG Xiao-long+1,ZHANG Dong-jie+2
Abstract:The gel-glass of BaO-TiO-2-Al-2O-3-SiO-2 system was prepared by sol-gel process,and glass- ceramics of kinds of crystal are obtained through the treatment.The crystals are determined by XRD.The net stability and crystallization of the gel-glass was analyzed by energy of crystal lattice.The more the energy of crystal lattice is,the more prior crystal crystallized from the gel-glass is.Based on the result of experiment,the crystallization order is in turn of BaTiO-3,Ba-2TiSi-2O-8,BaAl-2Si-2O-8 that agree with energy of inoic crystal lattice.
Keywords:BaTiO-2  glass  crystallization  energy of crystal lattice
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