Characterization of Wollastonite Glass-ceramics Made from Waste Glass and Coal Fly Ash
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2013年第2期
论文作者：Soon-Do Yoon Jong-Un Lee Jeong-Hwan Lee Yeon-Hum Yun Wang-Jung Yoon
文章页码：149 - 153
摘 要：The crystallization behavior of wollastonite glass-ceramics was investigated by means of X-ray diffraction （XRD） analysis and surface morphological observations, and the chemical compositions were evaluated by field emission-scanning electron microscopy （FE-SEM） and energy dispersive X-ray spectroscopy （EDS）. Various heat treatment temperatures （850, 900, 950, 1000 and 1050℃） were used to obtain glass-ceramics of the ideal wollastonite crystal phase as well as optimum mechanical properties and chemical durability. From XRD, FE-SEM and EDS, the crystallization of acicular crystal phase in the matrix was achieved at heat treatment temperature of 1000 and 1050℃, and wollastonite （CaSiO3） was found in the acicular type main crystal phase in the glass-ceramics. Various properties, such as density, compressive strength, bending strength and chemical durability were also examined. The mechanical properties of glass-ceramics obtained at the heat treatment temperature of 1000 and 1050℃ were superior to those obtained at the heat treatment temperature of 850℃.
Soon-Do Yoon1，Jong-Un Lee2，Jeong-Hwan Lee2，Yeon-Hum Yun2，Wang-Jung Yoon2
1. School of Biotechnology and Chemical Engineering, Chonnam National University2. Department of Energy & Resources Engineering, Chonnam National University
摘 要：The crystallization behavior of wollastonite glass-ceramics was investigated by means of X-ray diffraction （XRD） analysis and surface morphological observations, and the chemical compositions were evaluated by field emission-scanning electron microscopy （FE-SEM） and energy dispersive X-ray spectroscopy （EDS）. Various heat treatment temperatures （850, 900, 950, 1000 and 1050℃） were used to obtain glass-ceramics of the ideal wollastonite crystal phase as well as optimum mechanical properties and chemical durability. From XRD, FE-SEM and EDS, the crystallization of acicular crystal phase in the matrix was achieved at heat treatment temperature of 1000 and 1050℃, and wollastonite （CaSiO3） was found in the acicular type main crystal phase in the glass-ceramics. Various properties, such as density, compressive strength, bending strength and chemical durability were also examined. The mechanical properties of glass-ceramics obtained at the heat treatment temperature of 1000 and 1050℃ were superior to those obtained at the heat treatment temperature of 850℃.
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