Temperature Dependent Raman Spectra and Micro-Structure Study of Cuspidine in Solid and Liquid Phases
NIU Yu-jing, YOU Jing-lin*, WANG Yuan-yuan, WANG Zhi-chao, DAI Su-juan, XU Jian-lun, ZHENG Shao-bo
Shanghai Key Laboratory of Modern Metallurgy & Materials Processing, School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
Abstract：Cuspidine plays an important role in conventional metallurgical continuous casting mould flux. An UV laser source was used to record its ambient and high temperature Raman spectra (temperature range: 298-1 723 K) combined with a charge coupled device (CCD) detector. Both increasing and decreasing processes as well as characteristic spectra and shifts in wavenumber were observed. Micro-structure of cuspidine in liquid state is not unitary and different from that in solid state, suggesting multi clusters coexisting. Density functional theory (DFT) simulation method was applied to calculate its wavenumbers of Raman active vibrations by introducing the crystal spatial configuration model of cuspidine. Thus the experimental vibrational wavenumbers of the characteristic peaks could be assigned. This will help study physical and chemical behavior of cuspidine in continuous casting mould flux and provide an unique in-situ method under varying temperature with Raman spectroscopic technique.
Key words：High temperature Raman spectroscopy;Melt;Cuspidine;Sorosilicate
牛玉静，尤静林*，王媛媛，王志超，戴苏娟，徐建伦，郑少波 . 枪晶石变温拉曼光谱及其固液相微结构研究 [J]. 光谱学与光谱分析, 2010, 30(12): 3228-3231.
NIU Yu-jing, YOU Jing-lin*, WANG Yuan-yuan, WANG Zhi-chao, DAI Su-juan, XU Jian-lun, ZHENG Shao-bo . Temperature Dependent Raman Spectra and Micro-Structure Study of Cuspidine in Solid and Liquid Phases . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(12): 3228-3231.
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