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TiO2掺杂对CaO-Al2O3-SiO2系玻璃结构和性能的影响
          
Effect of TiO2 Doping on Structure and Properties ofCaO-Al2O3-SiO2 Series Glass

摘    要
采用传统熔体冷却法制备TiO2掺杂量(物质的量分数)为0~5.0%的CaO-Al2O3-SiO2(CAS)系玻璃,研究了TiO2掺杂量对该玻璃微观结构、热稳定性、弯曲强度的影响规律。结果表明:TiO2在CAS系玻璃网络中主要以[TiO5]单元的形式存在,随着TiO2掺杂量的增加,玻璃中的[TiO5]单元和Ti-O-Si键数量先增加后降低,玻璃网络中的桥氧数量先增多后减少,玻璃的光学带隙先增大后减小,且均在TiO2掺杂量为4.0%时达到最大值;随着TiO2掺杂量的增加,CAS系玻璃的热稳定性和弯曲强度均先提高后降低,当TiO2掺杂量为4%时综合性能最好,此时玻璃化转变温度、弯曲强度和光学带隙分别为798.24℃,95.58 MPa,3.75 eV。
标    签 CaO-Al2O3-SiO2系玻璃   TiO2   热稳定性   弯曲强度   CaO-Al2O3-SiO2 series glass   TiO2   thermal stability   bending strength  
 
Abstract
CaO-Al2O3-SiO2 (CAS) series glass with TiO2 doping amount (mole fraction) of 0-5.0% was prepared by traditional melt cooling method, and the effect of TiO2 doping amount on the micro structure, thermal stability and bending strength of the glass was studied. The results show that TiO2 mainly existed in the form of[TiO5] unit in CAS series glass network. With increasing TiO2 doping amount, the number of[TiO5] unit and Ti-O-Si bond in the glass, the number of bridge oxygen in the glass network, and optical band gap of the glass all first increased and then decreased, and all reached the largest value when the TiO2 doping amount was 4.0%. With increasing TiO2 doping amount, the thermal stability and flexural strength of CAS series glass first increased and then decreased. When the doping amount of TiO2 was 4%, the comprehensive performance was the best, and the glass transition temperature, bending strength and optical band gap were 798.24℃, 95.58 MPa and 3.75 eV, respectively.

中图分类号 TQ171   DOI 10.11973/jxgccl202204005

 
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所属栏目 试验研究

基金项目 浙江省基础公益研究计划项目(LGG19E020003);国家国际科技合作专项项目(2013DFE63070)

收稿日期 2020/12/11

修改稿日期 2021/12/15

网络出版日期

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备注陈超(1993-),男,江西南昌人,硕士研究生

引用该论文: CHEN Chao,ZHU Qingong,WANG Huanping,XU Shiqing,CAO Yongsheng,PEI Weiwei. Effect of TiO2 Doping on Structure and Properties ofCaO-Al2O3-SiO2 Series Glass[J]. Materials for mechancial engineering, 2022, 46(4): 32~36
陈超,朱钦塨,王焕平,徐时清,曹永盛,裴魏魏. TiO2掺杂对CaO-Al2O3-SiO2系玻璃结构和性能的影响[J]. 机械工程材料, 2022, 46(4): 32~36


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