矿产综合利用Issue(1)：137-141,5.DOI:10.3969/j.issn.1000-6532.2018.01.030
CaO/SiO2质量比对CaO-MgO-SiO2-Al2O3系微晶玻璃析晶行为的影响
Effect of Mass Ratio of CaO to SiO2 on Crystallization of CaO-MgO-SiO2-Al2O3 Glass Ceramics
摘要
Abstract
CaO-MgO-SiO2-Al2O3 glass ceramics with different mass ratios of CaO to SiO2 were prepared with the blast furnace slag from Tangshan Iron and Steel Company as the major raw material,mixed with other reagents by melting method.The effect of mass ratio of CaO to SiO2 on the crystallization behavior of glass ceramics was investigated by using differential scanning calorimetry,X-ray diffraction and scanning electron microscopy.The results show that the type of phase formation in the crystallization process depends on the mass ratios of CaO to SiO2.The dominant crystalline phase can be formed as diopside,augite and calcium akermanite with the different mass ratio.The proportion of crystal glass facies,particle shape and grain size of uniform density are different changes after different heat treatment system.The main crystal phase is diopside,crystal granular and have more residual glass phase when the mass ratios of CaO to SiO2 is 0.30.The main crystal phase is diopside,particles uniform and only a small amount of glass phase disperses in the crystal phase when the mass ratios of CaO to SiO2 is 0.44.The content of calcium akermanite increases significantly,crystal snowflake,particles coarsening and glass phase increases when the mass ratios of CaO to SiO2 is 0.63.Considering DSC curves,XRD pattems and microstmcture of the glass,the most suitable mass ratio of CaO to SiO2 in CMSA glass ceramics is 0.44,and the main crystalline phase of the glass ceramics is diopside with uniform fine grain.The appropriate heat treatment process is:nucleating at 775℃,crystallizing at 920℃,and heat preservation for 1.5h.关键词
CaO/SiO2质量比/微晶玻璃/析晶行为/透辉石Key words
Mass ratio of CaO to SiO2/Glass ceramics/Crystallization behavior/Diopside分类
矿业与冶金引用本文复制引用
王亚文,贵永亮,宋春燕,谢春帅,赵金龙..CaO/SiO2质量比对CaO-MgO-SiO2-Al2O3系微晶玻璃析晶行为的影响[J].矿产综合利用,2018,(1):137-141,5.基金项目
国家自然科学基金资助项目(51404087) （51404087）
