Structure and crystallographical formula of coal fly-ash glass-ceramics

被引：0

作者：

机构：

[1] Yao, Shu-Yu

[2] Wang, Zong-Feng

[3] Han, Ye

[4] Zhang, Wei-Wei

来源：

Yao, S.-Y. (shuyu_yao1971@163.com) | 1600年 / Editorial Office of Transactions of Materials, 18 Xueqing Road, Beijing, 100083, China卷 / 34期

关键词：

Chemical compositions - Crystal phase - Crystallographical formula - Electron probe - Fourier transform infrared - Higher frequencies - Sintering methods - Wollastonite;

D O I：

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摘要：

CaO-Na2O-SiO2 glass-ceramics was prepared from coal fly-ash by sintering method. Structure and chemical composition of crystal phase was investigated by X-ray diffraction (XRD), fourier transform infrared(FTIR)and electron probe micro-analyzer-wave dis-persive spectrometer (EPMA-WDS). The results show that the main crystal phase in the glass-ceramics is α-wollastonite, but whose crystal lattice is slightly different from card 27-0088. Compared with the standard IR spectra, the absorptions of Si-OB(OB represents the non-bridge oxygen) and Ca-O shift to higher frequency. Using the anion hydrogen equivalent method, the crystallographical formula of the wollastonite is identified.

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