在Li2O-Al2O3-SiO2系统玻璃中掺入少量晶核剂TiO2、ZrO2、P2O5,再掺入稀土离子和过渡金属离子作为着色剂,在高温下熔制得到彩色透明玻璃.对上述玻璃进行微晶化处理,用差热分析(DTA)确定其晶化温度,测定与讨论了所获彩色透明微晶玻璃在紫外波段至近红外波段的吸收光谱特性.研究结果表明,玻璃微晶化后,由于基质玻璃对光的微弱散射,引起吸收的增强,但不改变稀土离子和过渡金属离子的本征吸收峰位.

The transparent colored glass ceramics were obtained and based on the controlled nucleation and crystallization of Li 2O Al 2O 3 SiO 2 system glasses containing little TiO 2, ZrO 2 and P 2O 5 as nucleating agent and rare earth of transition metal ions as coloration agent. The temperature of nucleation and crystallization was determined with DTA analysis. The transmission of the obtained glass ceramics were measured and investigated in the range of ultraviolet to near infrared wavelength. The results show that the transmission of glass ceramic is reduced due to the scatter of micro crystallites for the light, while the instinct absorption peaks of rare earth in the host glass are almost the same as that after nucleation crystallization of the glass. The effects of glass and glass ceramics on the absorption spectra of rare earth and transition metal ions were discussed.