Optimal Conditions for Preparing Sintered Glass-Ceramics with Glass Frit from a Waste Water Flocculate

Abstract:

Sintered glass-ceramics have been successfully prepared using glass particles derived from a waste water flocculate. Influence of heat treatment conditions (sintering temperature and soaking time, heating rate) and size of the glass particles on the microstructure and density, hardness of the obtained glass-ceramics has been studied. The results show that the prepared glass-ceramics have gehlenite and anorthite as main crystalline phases. SEM analysis indicates that the size and morphology of the crystallites vary with the preparation conditions. A dense glass-ceramic with a high hardness can be obtained by sintering glass powder sized smaller than 0.075mm with a relatively slow ramping rate (3°C/min) to a temperature higher than the crystallization peak temperature of the parent glass for a short period of 30min to 1h.

• Periodical: Applied Mechanics and Materials (Volume 563)
• Pages: 36-40
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.563.36
• Online since: May 2014
• Authors: Na Li, Hong Hai Shen, Shi Quan Liu*
• Keywords: Crystallite, Glass-Ceramic, Hardness, Heat Treatment, Microstructure

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