Investigation of the Sintering Mechanism of Steel Slag-Based Ceramics

Abstract:

In order to manufacture high-value added materials from steel slag, a steel slag-based ceramic was prepared in the paper. X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques were carried out to characterize the phase formation and the microstructure of the steel slag-based ceramics. Besides, the line shrinkage, flexural strength and water absorption were also determined.Results show that the variation of the line shrinkage and the flexural strength had a positive correlation with the increase of the temperature at the interval 1160°C~1210°C, which was opposite to the change of the water absorption. 1210°C was proved to be the optimum sintering temperature in this work, at which the maximum flexural strength was obtained with a value of 99.39MPa. With the temperature increasing, the quartz phase gradually decreased, participating in the sintering reaction, and the diopside become dominant phase with columnar crystals in 2-5μm at length, which would contribute to the fine performance of the ceramics.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 1202-1207
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.1202
• Online since: July 2014
• Authors: Yuan Yuan Zhou, Yu Li*, Da Qiang Cang, Hong Li
• Keywords: Ceramic, Sintering Process, Steel Slag

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