晶化温度对R2O-CaO-MgO-Al2O3-SiO2-Fe2O3系微晶玻璃析晶与性能的影响  

Effect of Crystallization Temperature on Crystallization and Properties of R2O-CaO-MgO-Al2O3-SiO2-Fe2O3 System Glass-ceramics

作　　者：钟家卫 薛静雯 黄永前[1] ZHONG Jiawei;XUE Jingwen;HUANG Yongqian(College of Material Science and Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学材料科学与工程学院,成都610065

出　　处：《玻璃》2020年第9期8-12,共5页Glass

摘　　要：用熔融法制备了R2O-CaO-MgO-Al2O3-SiO2-Fe2O3系花岗岩废渣微晶玻璃。利用差示扫描量热法(DSC)、X射线衍射(XRD)、扫描电子显微镜(SEM)等研究了晶化温度对微晶玻璃析晶和性能的影响。结果表明:765℃、815℃晶化2h,试样主晶相为透辉石;815℃晶化后试样显微硬度达到最大值为7.67 GPa。865℃晶化2 h,试样主晶相为透辉石和磁赤铁矿。940℃晶化2 h,试样主晶相为磁赤铁矿和闪石,抗弯强度达到最大值为89.48 MPa。R2O-CaO-MgO-Al2O3-SiO2-Fe2O3 system granite wastes glass-ceramics were prepared by melting method.The effect of crystallization temperature on crystallization and properties of glassceramics were studied by differential scanning calorimetry(DSC),X-ray diffraction(XRD)and scanning electron microscopy(SEM),etc.The results show that the main crystalline phase was diopside when crystallize at 765℃and 815℃for 2 h.After crystallization at 815℃,the microhardness of the sample reached the maximum of 7.67 GPa.The main crystalline phase were diopside and maghemite when crystallize at 865℃for 2 h.The main crystalline phase were richterite and maghemite when crystallize at 940℃for 2 h,and the flexural strength of the sample reached the maximum of 89.48 MPa.

关 键 词：花岗岩废渣 微晶玻璃 晶化温度 力学性能 

分 类 号：TQ171[化学工程—玻璃工业]