Sol-Gel法合成BAS玻璃陶瓷

无机材料学报

Sol-Gel法合成BAS玻璃陶瓷

张波; 张立同⁺; 周万城⁺

中南工业大学粉末冶金国家重点实验室; 长沙410083; ⁺西北工业大学凝固技术国家重点实验室; 西安710072

收稿日期:1996-12-20 修回日期:1997-02-03 出版日期:1998-02-20 网络出版日期:1998-02-20

Sol-Gel Route to Barium Aluminosilicate (BAS) Glass-Ceramics

ZHANG Bo; ZHANG Li-Tong⁺; ZHOU Wan-Cheng⁺

State Key Lab for P/M; Central South University Changsha 410083 China; ⁺State Key Lab of Solidification Processing; Northwestern Polytechnical UniversityXi an 710072 China

Received:1996-12-20 Revised:1997-02-03 Published:1998-02-20 Online:1998-02-20

摘要/Abstract

摘要： 提出了一种新的Sol-Gel工艺设计思想和Sol-Gel工艺，合成了BAS凝胶和凝胶玻璃，用XRD、DTA和拉曼光谱分析了凝胶的析晶过程及玻璃网络结构．该工艺成本低、操作简便，所合成的凝胶是具有（Si、Al）-O分子网络的非晶体，非晶体的成核温度约938℃；晶体生长温度约1164℃．

关键词: Sol-Gel工艺, BAS玻璃陶瓷, 玻璃网络, 析晶

Abstract: A new idea was proposed for solving the problems caused by different hydrolysis rate of alkoxides in Sol-Gel processes. The new idea is that the highest-hydrolysis-rate
alkoxide is supposed to be hydrolysized slowly and homogeneously at first under a controllable condition, and meanwhile, its hydrolysis intermediates polymerize with
lower-hydrolysis-rate alkoxides. Based on this new idea, a Sol-Gel process with lower cost and a simple procedure was developed for synthesizing BAS glass-ceramics.
XRD, DTA and Laser Raman Spectrum were used to detect the molecular structures and crystallization behaviors of a gel and a gel-derived glass. The as-prepared gel is
amorphous with (Si, Al)--O network structures. The temperature of maximum-nucleation-rate of the amorphous is about 938℃, and the temperature of maximum-crystal-growth
is about 1164℃.

Key words: Sol-Gel process, BAS glass-ceramic, molecular structure, crystallization

中图分类号:

TQ163

张波,张立同,周万城. Sol-Gel法合成BAS玻璃陶瓷[J]. 无机材料学报.

ZHANG Bo,ZHANG Li-Tong,ZHOU Wan-Cheng. Sol-Gel Route to Barium Aluminosilicate (BAS) Glass-Ceramics[J]. Journal of Inorganic Materials.

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