Crystallization and Optical Properties of Sr₃Al₂O₆-SrAl₂O₄ Eutectic Glass

Abstract:

SrO-Al₂O₃ ceramics has prospective applications due to its photo-luminescence and persistent afterglow properties. Sr₃Al₂O₆-SrAl₂O₄ eutectic glass was prepared by using the aerodynamic levitator equipped with a CO₂ laser device. The prepared Sr₃Al₂O₆-SrAl₂O₄ eutectic glass beads were further heat-treated at temperature from 880°C to 980°C. The phase evolution, crystallization behavior, optical transmittance and mechanical properties of the annealed eutectic glass ceramics were investigated. The as-prepared glass is colorless and transparent over a wide range from ultraviolet to near-infrared region, and the average in-line transmittance is over 80% in the range of 260-3200nm. There were two crystal phases Sr₃Al₂O₆ and SrAl₂O₄ crystallized from the glass beads. With increasing heat-treatment temperature, the transparency of the samples decreased, and the hardness increased. The prepared Sr₃Al₂O₆-SrAl₂O₄ eutectic glass and glass ceramics may be a promising candidate for the development of photo-luminescence and persistent afterglow materials.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 163-168
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.163
• Online since: August 2018
• Authors: Jia Xi Liu, Nan Lu, Gang He, Xiao Yu Li, Jian Qiang Li, Jiang Tao Li*
• Keywords: Crystallization Process, Glass-Ceramic, Strontium Aluminate, Transparency

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