Processing and Characterization of Nanocrystalline Mica Glass-Ceramics


Department of Materials Science of Engineering, Tarbiat Modares University


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