| Sol-Gel法合成BAS玻璃陶瓷 |
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| 引用本文： | 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, 1998, 13(1): 7-12 |
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| 作者姓名： | 张波 张立同 周万城 |
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| 作者单位： | 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 |
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| 基金项目： | 国防基金资助项目!91项目2.10 |
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| 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℃．
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| 关 键 词： | Sol-Gel工艺 BAS玻璃陶瓷 玻璃网络 析晶 |
| 收稿时间： | 1996-12-20 |
| 修稿时间： | 1997-02-03 |
Sol-Gel Route to Barium Aluminosilicate (BAS) Glass-Ceramics |
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| ZHANG Bo,ZHANG Li-Tong,ZHOU Wan-Cheng. Sol-Gel Route to Barium Aluminosilicate (BAS) Glass-Ceramics[J]. Journal of Inorganic Materials, 1998, 13(1): 7-12 |
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| Authors: | ZHANG Bo ZHANG Li-Tong ZHOU Wan-Cheng |
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| Affiliation: | State Key Lab for P/M; Central South University Changsha 410083 China; State Key Lab of Solidification Processing; Northwestern Polytechnical UniversityXi an 710072 China |
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| 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℃. |
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| Keywords: | Sol-Gel process BAS glass-ceramic molecular structure crystallization |
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