【摘要】 采用高温拉曼光谱技术 ,对CaO Al2 O3 SiO2 (简称CAS)三元系硅酸盐熔体试样从 2 5℃ (淬火玻璃相 )～ 170 0℃ (高温熔融相 )的分子网络分数维值进行了系统研究 ,首次获得了该熔体在升温和淬火过程中网络分数维值的变化规律 ,也即在纳米尺度上描述了熔体网络构象的蠕变特征。这对深入研究熔体的粘度、密度和表面张力等物化性质具有重要意义 ,也将为进一步探索地幔岩浆上升速率及其迁移演化规律 ,完善冶金炉渣构成机理和改进低维非晶态材料与高分子材料的制备工艺和性能提供新的重要信息和理论依据。更多还原

【Abstract】 In this paper, The fractional dimension values of molecular network structure in the CaO-Al₂O₃-SiO₂ silicate melts （being abbreviated CAS） from 25 ℃ （the quenching glass phases） up to 1 700 ℃ （the high temperature melts） have been investigated by using high temperature Raman spectroscopy. The quantitative measurement method of network fractional dimension value has been established using Raman spectrum, and the changing rules of fractional dimension values of the silicate melts during increasing temperature and quenching have been obtained. So the conformational wriggling characteristic of molecular network structure has been described for nanometer size. This has important significance for the research on the viscosity, density and surface tension of the melts, and provides important new information and theory for deliberating natural magmatic crystallization and evolution, and enhancing performance of low dimensional materials and organic materials.更多还原