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<p>In this study, the coefficient of thermal expansion (CTE), crystallization behavior, refractive index, and in-line transmittance of La<sub>2</sub>O<sub>3</sub>-Y<sub>2</sub>O<sub>3</sub>-Al<sub>2</sub>O<sub>3</sub>-B<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> glasses with different TiO<sub>2</sub> contents were studied. With the increased in TiO<sub>2</sub> content, the CTE value could be adjusted in the range of 6.0 × 10<sup>−6</sup>/°C-6.5 × 10<sup>−6</sup>/°C. And the refractive index gradually increased from 1.6935 to 1.8010 due to the high refractive factor of TiO<sub>2</sub>. Glass has an excellent in-line transmittance of more than 79%. This provides good conditions for brazing transparent ceramics to obtain joints with excellent in-line transmittance and high strength. Additionally, the increase in TiO<sub>2</sub> content decreased the crystallization characteristic temperature of the glasses. After crystallization treatment, the type of crystals changed and the crystal content gradually increased.</p>

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Effect of TiO2 Content on Coefficient of Thermal Expansion, Crystallization Behavior, and Optical Properties of La2O3-Y2O3-Al2O3-B2O3-SiO2 Glass

  • 期刊论文

  • 发表日期：

    2025年8月20日

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  • Junyu Yao,
  • Weiwei Zhu,
  • Haohao Zou,
  • Ying Han,
  • Xu Ran

摘要

In this study, the coefficient of thermal expansion (CTE), crystallization behavior, refractive index, and in-line transmittance of La2O3-Y2O3-Al2O3-B2O3-SiO2 glasses with different TiO2 contents were studied. With the increased in TiO2 content, the CTE value could be adjusted in the range of 6.0 × 10−6/°C-6.5 × 10−6/°C. And the refractive index gradually increased from 1.6935 to 1.8010 due to the high refractive factor of TiO2. Glass has an excellent in-line transmittance of more than 79%. This provides good conditions for brazing transparent ceramics to obtain joints with excellent in-line transmittance and high strength. Additionally, the increase in TiO2 content decreased the crystallization characteristic temperature of the glasses. After crystallization treatment, the type of crystals changed and the crystal content gradually increased.