为了探索镧系与非镧系元素对ZnO-B2O3-SiO2系统玻璃热稳定性及结构的影响,本研究采用差示扫描量热仪(DSC)和傅立叶变化红外光谱仪(FTIR)开展了La2O3和Y2O3掺杂对该系统玻璃析晶行为、热稳定性和结构变化的系统研究.结果表明:当La2O3掺杂量大于8mol%、Y2O3掺杂量大于6mol%时,60ZnO-30B2O3-10SiO2系统玻璃开始出现析晶现象;当La2O3掺杂量为4mol%、Y2O3掺杂量为2mol%时,该玻璃的热稳定性能最好.结构研究表明,少量添加稀土氧化物会使该系统玻璃的网络链接程度提高,而当掺杂量超过一定量时会使该系统玻璃的网络链接程度降低.
To investigate the effect of the lanthanides and non-lanthanides elements on the thermal stability and structure of ZnO-B2O3-SiO2 glass, the crystallization behavior, thermal stability and structural changes of ZnO-B2O3-SiO2 glass doped with La2O3and Y2O3 were characterized by the differential scanning calorimetry (DSC) and Fourier Transform Infrared spectroscope (FTIR). The results showed that when the La2O3 and Y2O3additions are more than 8mol% and 6mol%, respectively, the 60ZnO-30B2O3-10SiO2 glass system begins to crystallize. When La2O3 and Y2O3 additions are 4mol% and 2mol%, respectively, this glass is of the best thermal stability. According to the structure research, the network linking performance of this kind of glass can be improved by a small amount addition of rare earth oxide. In contrast, the network linking performance of this kind of glass can be decreased by rare earth oxide's addition exceeding a certain threshold value.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%