摘要
运用DTA、XRD和SEM.等现代分析技术对CaO(MgO)-Al2O3-SiO2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。实验结果表明,当高炉渣加入量为45％时,主晶相为普通辉石(CaSiO3)和透辉石(CaMg(SiO3)2),材料结构均匀致密,性能良好。此实验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1 h。
DTA, XRD and SEM were used to ascertain the heat - treatment temperatures and characterize the phase composition and micro-structure of the glass - ceramics of CaO (MgO) - A12O3 - SiO2 system. The relationship among the content of the blast slag, the heat -treatment parameters and the properties were discussed. Experimental results show that when the content of the slag was 45 % , 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 ℃, nucleared at 850 ℃ for 1 h, then crystallized at 970 t for 1 h.
出处
《陶瓷》
CAS
2003年第6期17-20,共4页
Ceramics
基金
国家自然科学基金委
上海宝钢集团联合资助项目(50174024)
