The effect of glass composition and structure on photochromic properties of LiF–Al2O3–B2O3 glassy materials

Resumo

The glass-forming region of the LiF–Al₂O₃–B₂O₃ system and the phase diagram of this region have been studied. Properties of glasses and devitrified glasses, as well as the crystallization products, are investigated. The effect of metastable liquation and the free volume on photochromic properties of glasses and glass–crystalline materials activated with AgCl and Cu₂O has been revealed. Photosensitive glass ceramics characterized by the linear thermal expansion coefficient (30–45) × 10^–7 K^–1 and high transparency in the visible spectral region have been synthesized.