Crystallization studies of Lithium Borosilicate glasses.

Pervez Iqbal Qazi; Wajid Ali Shah; Fadia Shaheen

Author(s)

Pervez Iqbal Qazi Glass & Ceramics Research Centre, PCSIR Labs. Complex, Lahore, Pakistan

Wajid Ali Shah Glass & Ceramics Research Centre, PCSIR Labs. Complex, Lahore, Pakistan

Fadia Shaheen Glass & Ceramics Research Centre, PCSIR Labs. Complex, Lahore, Pakistan

Abstract

Lithium borosilicate ternary system is analogous to the most commercially exploited Na2O-B2O3-SiO2 system. The tendency towards liquid-liquid immiscibility is enhanced when sodium is replaced by lithium, which facilitates the crystallization process. In the present work, three compositions of lithium borosilicate glasses were formulated and melted by varying the mol percent ratio of SiO2 and Li2O. The glasses were subsequently subjected to crystallization by isothermal heat-treatments at identical temperatures for various specific time durations. The crystal growth was found to be linear and the rate of crystallization was dependent on SiO2/Li2O ratio. The phases that developed during heat-treatments were identified using XRD.

Publication Details

Page(s) 170-173

DOI DOI not available

Published Journal: Pakistan Journal of Scientific and Industrial Research, Volume: 49, Issue: 3, Year: 2006

Request the full text from PASTIC