Effect of MgO/Al₂O₃ Ratio on Properties and Crystallization of Glass-Ceramics

Abstract:

Reduction electric furnace slag, quartz sand and soapstone were used as the raw materials for preparation of glass-ceramics according to their compositions and characteristics. Differential thermal analysis, X-ray diffraction, scanning electron microscopy were used to investigate the crystallization mechanism, microstructure and main mechanical properties of slag glass-ceramics with different mass ratios of MgO/Al₂O₃. The exothermic peaks of the DTA curves shift to higher temperature with the decrease of MgO/Al₂O₃ ratio. And along with the decreasing of the MgO/Al₂O₃, the crystallization of the glass-ceramics also decreased. The bending strength can reach 153.09MPa when the MgO/Al₂O₃ ratio is 3.03.

• Periodical: Advanced Materials Research (Volumes 1065-1069)
• Pages: 1879-1883
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.1879
• Online since: December 2014
• Authors: Jun Jie Hou, Yan Bing Zong*, Zhao Bo Liu, Da Qiang Cang
• Keywords: Glass-Ceramics, Mechanical Property, Metallurgical Slag

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