Crystallization and Mechanical Properties of Glass-Ceramic from Silicon Slag

Hang Li; Li Qiang Liu; Min Jing; Zhi Gang Wang; Zheng Wang; Rui Ping Xing

doi:10.4028/www.scientific.net/AMR.953-954.1643

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 953-954Crystallization and Mechanical Properties of...

Crystallization and Mechanical Properties of Glass-Ceramic from Silicon Slag

Abstract:

The glass-ceramic materials were produced from silicon slag with the addition of talcum powder and TiO₂ by melting them in an electrically heated furnace and subsequent heat treatment at various temperatures and time. The microstructure and crystallization behaviors of glass–ceramics have been investigated by differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). With the increase of silicon slag content, the sequent precipitate phase is: krinovite Na (Mg_1.9Fe₀_.1)Cr (SiO)₃O, pseudobrookite Fe₂TiO₅ and anorthite Ca (Al₂Si₂O₈), enstatite ferroan MgFeSi₂O₆, and albite Na (AlSi₃O₈). The shape of crystals was spherical grains. The glass–ceramic sample obtained from 70% silicon slag had the excellent mechanical performance including flexural strength of 200.45 MPa and Vickers micro hardness of 909.72 MPa.

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Advanced Materials Research (Volumes 953-954)

Pages:

1643-1648

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.953-954.1643

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Online since:

June 2014

Authors:

Hang Li*, Li Qiang Liu, Min Jing, Zhi Gang Wang, Zheng Wang, Rui Ping Xing

Keywords:

Crystallization, Glass-Ceramic, Mechanical Property, Microstructure, Silicon Slag

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