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上海市钢铁冶金新技术开发应用重点实验室 ( SELF)的 U- 1 0 0 0型 Raman谱仪经过改造已能用两种方式在高温下进行测定。其一是由共焦显微镜 -显微加热台构成的“空间分辨法”。其二是利用电阻炉加热的“时间分辨法”。SELF正在进行冶金熔渣的微结构研究。这类物质的物性 (从冶金学考虑 ,首先是熔渣中的组元活度 )数据已有不少报道 ,但为了促进技术的发展 ,急需鉴别它们的可靠程度。并且 ,还有大量未定值的物性 (例如 :粘度、表面张力、介电常数、扩散系数等 )有待预测。而打通微观结构和宏观物性之间的渠道 ,则是解决上述问题的根本途径。本文介绍了 SELF在 <2 0 0 0 K条件下的 HTRS(高温 Raman谱 )实测和 DFT- MD计算机模拟两种研究手段 ,定量分析冶金熔渣微结构的基本思路以及若干初步的结果。事实上 ,冶金熔渣、地学中的岩浆、玻璃和陶瓷 ,乃致某些宝石都可认为是一大物类 ,所以 SEL F同时也正在进行着烯土类熔盐和功能晶体的研究。
The U-100 Raman spectrometer from the Shanghai Municipal Commission of Advanced Research and Application of Ferrous Metallurgy (SELF) has been modified to measure at elevated temperatures in two ways. One is the “spatial resolution method” consisting of a confocal microscope - a micro-heating station. The second is the use of resistance furnace heating “time-resolved method.” SELF is conducting metallurgical slag microstructure studies. There has been a lot of data on the physical properties of these materials (metallurgical considerations, first of all, activity of the components in the slag), but in order to facilitate the development of the technology, it is imperative to identify their reliability. And, there are a large number of uncertain properties (for example: viscosity, surface tension, dielectric constant, diffusion coefficient, etc.) to be predicted. However, opening up the channels between the microstructure and macro physical properties is the fundamental way to solve the above problems. In this paper, two methods of real-time measurement of HTRS (High Temperature Raman Spectroscopy) and DFT-MD computer simulation of SELF under <2000 K are introduced. The basic idea of quantitative analysis of metallurgical slag microstructure and some preliminary results are introduced. In fact, SELF is also conducting studies on alchemy molten salts and functional crystals at the same time as metallurgical slag, geosciences, magnesia, glass and ceramics are considered as some of the most precious.