Crystallization Kinetics and Characterization of Nanostructure Mica Glass-Ceramics with Optical Transparency

	Crystallization Kinetics and Characterization of Nanostructure Mica Glass-Ceramics with Optical Transparency
Article 6, Volume 4, Issue 1, Winter 2014, Page 45-53 PDF (990.79 K)
Document Type: Research Paper
DOI: 10.7508/jns.2014.01.006
Authors
P. Alizadeh ; V. Khani
Department of Materials Science and Engineering, Tarbiat Modares University, Tehran, Iran
Abstract
Transparent glasses in a system of Li₂O-MgO-SiO₂-Al₂O₃-Fchemical constituents were prepared by melt quenching method. In the fabrication of nanocrystal glass-ceramics, controlled nucleation and subsequent crystal growth were necessary to avoid loss of transparency. It was therefore important to understand thermal properties and crystallization kinetics of the glass ceramics. The crystallization behavior of the prepared glass was investigated by DTA, XRD and SEM. By crystallization heat-treatment, various crystalline phases, microstructure and transmittance were obtained. The sellaite was first precipitated as the nuclei before the crystallization of mica and then mica nanocrystals were precipitated with average size of
Keywords
Glass Ceramics; transparent; MICA; Nanostructure; Crystallization kinetics


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