标题：Preparation and structure analysis of diopside glass-ceramic from coal fly-ash
作者：Yao, Shu-Yu ;Wang, Zong-Feng ;Han, Ye ;Zhang, Wei-Wei
作者机构：[Yao, Shu-Yu ;Wang, Zong-Feng ;Han, Ye ;Zhang, Wei-Wei ] School of Materials Science and Engineering, Shandong University of Science and Technology, Q 更多
来源：Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
摘要：Glass-ceramic was prepared by sintering method from coal fly-ash. The structure of the glass-ceramic was investigated by X-ray diffraction (XRD), electron probe microanalysis-energy dispersive spectrum analysis(EPMA-EDS) and fourier transform infrared(FTIR) spectrometer. The results show that the main crystal phase of the glass-ceramic is diopside, its lattice parameters calculated are a=0.97669 nm, b=0.893828 nm, c=0.526093 nm, β=105.974°. The diopside with size range from 2 to 20 μm not only contains Ca, Mg, Si, O but also Na, Al, Fe elements. These foreign elements change the lattice parameters of diopside. Infrared spectrum of the glass-ceramic appears strong absorption peak of diopside, which significantly deviates from infrared standard spectrum, indicating the crystal defect of the glass-ceramic, which is consistent with the XRD, EPMA-EDS analysis.