花岗岩废渣微晶玻璃晶化工艺研究  

Study on Crystallization Process of Glass-ceramics Made from Granite Residual

作　　者：万里佳 黄永前[1] 闫鑫坤 WAN Lijia,HUANG Yongqian,YAN Xinkun(College of Material Science and Engineering, Sichuan University, Chengdu, 61006)

机构地区：[1]四川大学材料科学与工程学院,成都市610065

出　　处：《玻璃》2018年第4期5-8,共4页Glass

摘　　要：用差示扫描量热法(DSC)、X射线衍射(XRD)、扫描电子显微镜(SEM)等测试方法研究了晶化工艺对R_2O-CaO-MgO-Al_2O_3-SiO_2-F系废渣微晶玻璃晶相组成、显微结构和力学性能的影响。结果表明:873℃晶化1 h,试样主晶相为斜顽辉石;随着晶化温度升高斜顽辉石向透辉石转变,1010℃晶化1 h,试样主晶相为透辉石和斜顽辉石,三点抗弯强度和显微硬度达最大值,分别为125 MPa、5.21 GPa;1 080℃晶化1 h,出现氟闪石新相,力学性能开始下降。The influence of crystallization process on crystallization phases, microstructure and mechanical properties of R2O-CaO-MgO-Al2O3-SiO2-F system glass-ceramics were investigated systematically by differential scanning calorimetry, X-ray diffraction,and scanning electron microscope, etc. The results show that the main phases was clinoenstatite when crystallize at 873℃. As the crystallization increases, the clinoenstatite convert into diopside. Crystallized at 1010℃, the main phases were diopside and fluorphlogopite. the value of the three-point bending strength and microhardness reach up to hightest, which were 125 MPa and 5.21 GPa. Then the mechanical properties of glass-ceramics decreases gradually with the crystallization temperature raise to 1080 Furthermore, the K-Fluorrichterite also crystallized at this temperature.

关 键 词：花岗岩废渣 晶化温度 复合晶相 力学性能 

分 类 号：TQ171[化学工程—玻璃工业]