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《Glass》 2006-01
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INVERSTIGATION ON SURFACE CRYSTALLIZATION OF CaO-Al_2O_3-SiO_2 GLASS CERAMICS

Wu Peng, Cheng Jin-shu, Xiejun, Zheng Wei-hong, Liu Jian  
The crystallization thermodynamics of CaO-Al2O3-SiO2 glass ceramics was investigated by differential thermal analysis (DTA) , X-ray diffraction (XRD) , scanning electron microscope (SEM) . The activation energy for crystallization on the surface of the glass ceramics was calculated and the optimal parameters for heat treatment was also obtained . The principle crystalline phase is (3-wollastonite which takes the shape of needle and the crystal grows from surface to heart . As the crystal size reduces the number of crystals increases and the volume decrease .
【CateGory Index】: TQ171.1
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