TiO2对CaO-Al2O3-SiO2玻璃结构和性能的影响
| 作 者：徐兴军 |
| 单 位：济南大学 |
| 基金项目：山东省优秀中青年科学家奖励基金 |
| 摘 要： |
| 采用DTA、IR方法研究TiO2对CaO−Al2O3−SiO2玻璃体系结构的影响。DTA分析结果表明，随氧化钛含量的变化，玻璃转变温度tg呈现先升高后降低的趋势；析晶放热峰值温度tp则逐渐降低。IR分析，少量的Ti4+的引入，有助于Al3+进入玻璃网络中。当氧化钛含量超过4.5mol%时，Ti4+以[TiO4]的形式进入玻璃网络，使网络结构加强；当氧化钛含量达到7.5mol%时，出现六配位状态的[TiO6]8-。随着氧化钛含量的增加，密度逐渐增大；化学稳定性，先降低后升高，在一定范围内，引入TiO2能提高玻璃耐碱性。 |
| 关键词：CaO−Al2O3−SiO2体系；结构；密度；化学稳定性 |
The effect of TiO2 on structure and properties of CaO-Al2O3-SiO2 glass system
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| Abstract: |
| The effect of TiO2 on the CaO-Al2O3-SiO2 glass system was studied by DTA and IR.DTA analysis showed that with the titanium dioxide content changes, Glass transition temperature (tg) at first increased and then decreased; crystallization exothermic peak temperature(tp) decreased gradually. IR analysis, glass network become stronger for introducing a small amount of Ti4+, When the titanium content of more than 4.5mol%,Ti4+ form into the glass network and by [TiO4] strengthen the network structure; when reaches 7.5mol%, the six-coordination state appears [TiO6]8-. With the titanium content increased, the density increases; chemical stability, first and then decreased, in a certain range, the introduction of TiO2 can increase the alkali resistance of glass. |
| Keywords: CaO-Al2O3-SiO2 system; structure; density; chemical stability |
| 投稿时间：2010-12-01 |
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