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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Crystallization behavior of glass ceramics prepared from the mixture of nickel slag, blast furnace slag and quartz sand
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Crystallization behavior of glass ceramics prepared from the mixture of nickel slag, blast furnace slag and quartz sand

机译：由镍渣，高炉渣和石英砂的混合物制得的玻璃陶瓷的结晶行为

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摘要

The purpose of this paper was to investigate the crystallization process of glass ceramics prepared from a mixture which was composed of nickel slag, blast furnace slag and a small amount of quartz sand. First, the parent glass of the mixture was prepared. Then, the glass ceramics were obtained by heat-treating for the parent glass. The crystallization behavior was studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM). A large number of tiny spherical crystals were observed when the glass was heated up to 700 °C. Subsequently, the radial crystals were observed when the glass was heated up to 820 °C. By XRD analyzing, the spherical crystals and radial crystals were likely to be the crystals of diopside (CaMg(Si,Al,Fe)_2O_6) and hedenbergite (CaFe(Si,Al,Fe)_2O_6). The crystallization temperature was 860 °C and the final crystalline phases were identified to be diopside and hedenbergite. In addition, the activation energy of crystallization was evaluated by Kissinger method.
机译：本文的目的是研究由镍渣，高炉渣和少量石英砂组成的混合物制备的玻璃陶瓷的结晶过程。首先，制备混合物的母体玻璃。然后，通过对母体玻璃进行热处理来获得玻璃陶瓷。通过差示扫描量热法（DSC），X射线衍射（XRD）和场发射扫描电子显微镜（FESEM）研究了结晶行为。将玻璃加热到700°C时，观察到大量细小的球形晶体。随后，当将玻璃加热到820℃时观察到放射状晶体。通过X射线衍射分析，球形晶体和放射状晶体很可能是透辉石（CaMg（Si，Al，Fe）_2O_6）和变长石（CaFe（Si，Al，Fe）_2O_6）的晶体。结晶温度为860°C，最终结晶相被确定为透辉石和菱锰矿。另外，通过基辛格法评估结晶的活化能。

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