title: [Temperature dependent Raman spectra and micro-structure study of cuspidine in solid and liquid phases].
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.
authors.affiliation: Shanghai Key Laboratory of Modern Metallurgy & Materials Processing, School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China. niuyujing@163.com
authors.forename: Yu-Jing
authors.initials: YJ
authors.lastname: Niu
authors.forename: Jing-Lin
authors.initials: JL
authors.lastname: You
authors.forename: Yuan-Yuan
authors.initials: YY
authors.lastname: Wang
authors.forename: Zhi-Chao
authors.initials: ZC
authors.lastname: Wang
authors.forename: Su-Juan
authors.initials: SJ
authors.lastname: Dai
authors.forename: Jian-Lun
authors.initials: JL
authors.lastname: Xu
authors.forename: Shao-Bo
authors.initials: SB
authors.lastname: Zheng