Physico-Chemical Properties And Structural Transformations In The Synthesis Of Boroalumosilicate Glass-Crystal Materials

Authors

Julia Yeganyan, Institute of General and Inorganic Chemistry, Yerevan, ArmeniaFollow

Abstract

The aim of this work is to study the areas of glass formation and metastable liquation of the pseudo-ternary system (MgO·Al₂O₃)-B₂O₃-SiO₂, and study of the crystallization process of glasses of cordierite composition. The crystallization process of glasses of cordierite composition containing B₂O₃ by a single-stage heat treatment at 1000 ^oC and 1200 ^oC, the nature of crystallization, the thermal properties of glasses and glass crystalline materials of the system (MgO·A_l2O₃)-B₂O₃-SiO₂ were studied. It revealed that during the isolation of a boron-containing solid solution, the residual glassy phase enriched with oxides of MgO and Al₂O₃, which lead to an increase in the thermal expansion coefficient of the glass phase. The research results provide possibility to synthesize glass-ceramics with certain thermophysical parameters by stopping further glass crystallization at the stage of formation of a certain amount and ratio of the required crystalline and glassy phases.

Recommended Citation

Yeganyan, Julia (2021) "Physico-Chemical Properties And Structural Transformations In The Synthesis Of Boroalumosilicate Glass-Crystal Materials," CHEMISTRY AND CHEMICAL ENGINEERING: Vol. 2021: No. 1, Article 1.
DOI: https://doi.org/10.51348/IAPA1538
Available at: https://cce.researchcommons.org/journal/vol2021/iss1/1