Processing and Characterization of Nanocrystalline Mica Glass-Ceramics

Abstract

In order to fabrication of transparent glass-ceramics with Li-mica nano crystals, the glasses with chemical <br />composition of 94.9 mass% Li(1+x)Mg3AlSi3(1+x)F2 (x=0.5) with 5.1 mass% MgF2 were crystallized. The <br />glasses were fabricated via the conventional melt-quenching technique. Mica crystals were precipitated in <br />the glass phase by later heat treatment. Glass samples had glass transition temperature (Tg), 557 ?C, <br />softening temperature (Ts), 603 ?C, and crystallization peak temperature (Tp), 655 ?C. The fine mica crystals <br />with size of separation. It's confirmed that both as-quenched and heat-treated samples are transparent in the visible wave <br />length.