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

DOI

10.51348/IAPA1538

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: 10.51348/IAPA1538
Available at: https://cce.researchcommons.org/journal/vol2021/iss1/1