Crystallization characteristics and physico-chemical properties of indium-containing lithium iron aluminosilicate glasses

• Published in: Ceramics international Vol. 39; no. 1; pp. 395 - 402
• Main Authors: Salman, S.M., Salama, S.N., Mahdy, Ebrahim A.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.01.2013
• Subjects: Chemical durability; Crystallization; Durability; Glass; Glass ceramics; Indium oxides; Lithium; Microhardness; Microstructure; Phases; Solid solution (ss); Solid solution (ss); Chemical durability; Microhardness; Crystallization
• ISSN: 0272-8842; 1873-3956
• DOI: 10.1016/j.ceramint.2012.06.040

The crystallization characteristics, microhardness and chemical durability of glasses based on the Li2O–Al2O3–Fe2O3 (In2O3)–SiO2 system were investigated. The present work aims to study the effect of In2O3/Fe2O3 replacements on the crystallization and the resulting microstructure of the glass-ceramics. Very fine grained microstructure was mostly developed by In2O3/Fe2O3 replacements in the glass-ceramics. The crystalline phases formed after controlled heat-treatment of the glasses were β-eucryptite ss, lithium meta- and di-silicate as well as two forms of pyroxene phases (LiFeSi2O6 and LiInSi2O6). The microhardness values of the resulting glass-ceramics were decreased with In2O3/Fe2O3 replacements while the chemical durability was improved. The obtained data were correlated to the type of the crystalline phases formed and the resulting microstructure. Promising glass-ceramic materials of fine microstructure and good chemical durability could be obtained.