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非晶态硅酸盐是典型的近程有序,远程无序的准稳定态体系,采用分数维理论与X射线小角散射(SAXS)、拉曼光谱(RS)、透射电子显微镜(TEM)等分析技术相结合,对高温熔融法和溶胶凝胶法合成的CaO-Al2O3-SiO2及Na2O-Al2O3-SiO2系列低维非晶硅酸盐试样进行了网络分数维、微粒微孔分数维、网络自相似比、回旋半径、微孔体积百分率、团粒尺度和微孔尺度等介观参数群的定量测定及研究,获得了低温硅酸盐凝胶、高温硅酸盐熔体(仿岩浆熔体)之淬火玻璃相均具有纳米级(几个nm至几十nm)统计性自相似团粒结构的结论,进而建立了介观团粒结构模型,揭示了该结构模型内各介观参数与其宏观参量的相关性,从而为非晶硅酸盐提供了一整套介观定量结构参数,确定了岩浆熔体是准稳定的、可演变的分数维体系,对探索自然界岩浆的地球化学特征以及低维复合材料结构性能的改进具有重要的理论和实用意义.
Amorphous silicate is a typical quasi-stationary system with short-range order and remote disorderedness. Fractal theory and X-ray small angle scattering (SAXS), Raman spectroscopy (RS) and transmission electron microscopy Analysis technology, the high-temperature melting method and the sol-gel synthesis of CaO-Al2O3-SiO2 and Na2O-Al2O3-SiO2 series of low-dimensional amorphous silicate samples were fractal dimension, micropore fractal dimension, network Self-similarity ratio, gyration radius, micropore volume fraction, particle size and mesoporosity and other mesoscopic parameters of the quantitative determination and study, access to low-temperature silicate gel, high temperature silicate melt (imitation magma melt) The results show that the quenched glass phase has the statistical self-similar aggregated structure of nano-scale (a few nm to several tens of nm), and then established the mesoscopic granular structure model, revealing the correlation between the mesoscopic parameters and the macroscopic parameters in the structural model Which provided a set of mesoscopic quantitative structure parameters for amorphous silicate. It was confirmed that the magma melt is a quasi-stable and evolutive fractal system. It is of great significance to explore the geochemical characteristics of magmatic rocks and the low-dimensional composite structures With the improvement of performance Important theoretical and practical significance.