摘要
运用DTA、XRD和SEM等现代分析技术对CaO(MgO)-Al_2O_3-SiO_2系矿渣微晶玻璃的核化晶化温度、物相组成和显微结构进行了分析,探讨了高炉渣引入量和热处理制度的影响。试验结果表明,当高炉渣加入量为45wt％时,主晶相为普通辉石(CaSiO_3)和透辉石(CaMg(SiO_3)_2),材料结构均匀致密,性能良好。本文适宜的热处理工艺参数为:退火温度670℃;核化温度850℃,晶化温度970℃,各保温1h。
DTA, XRD and SEM were used to ascertain the heat-treatment temperatures and characterize the phase composition and microstructure of the glass-ceramics of CaO(MgO)-Al3O3-SiO2 system. The relationship among the content of the blast slag, the heat-treatment parameters and the properties of glass-ceramics were discussed. Experimental results show that when the content of the slag was 45wt%, the major crystalline phases are wollastonite (CaSiO3) and diopside (CaMg(SiO3)2), and the properties of the glass-ceramics are as required. The optimal heat-treatment parameters are: annealed at 670℃, nucleated at 850℃for 1h, then crystallized at 970℃ for 1h.
出处
《陶瓷科学与艺术》
CAS
2003年第5期42-46,共5页
Ceramics Science & Art
基金
国家自然科学基金委和上海宝钢集团联合资助项目(50174024)
