Na_2O-MgO-Al_2O_3-SiO_2建筑装饰微晶玻璃的研究  

Study of Na_2O-MgO-Al_2O_3-SiO_2 System Glass-Ceramics for Building Decoration Materials

作　　者：何峰[1] 郑媛媛[1] 邓恒涛[1] 冯小平[1] 乔勇[2] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,武汉市430070 [2]秦皇岛玻璃工业研究设计院,秦皇岛市066004

出　　处：《玻璃》2013年第2期41-44,共4页Glass

基　　金："十二五"国家科技支撑计划(2012BAA08B04)资助

摘　　要：利用浇铸法制备了MgO-Al2O3-SiO2微晶玻璃。采用示差扫描量热法(DSC)、X射线衍射(XRD)、扫描电子显微镜(SEM)等分析方法,研究NMAS微晶玻璃玻璃组成中Al2O3/SiO2对微晶玻璃的析晶和性能的影响。结果表明:玻璃中析出的主晶相为镁橄榄石。随Al2O3/SiO2的减小,镁橄榄石的衍射峰强度逐渐减弱,次晶相为a-堇青石。C3、C4中还有很少量-6-1的顽辉石相。微晶玻璃热膨胀系数逐渐升高,抗折强度和硬度逐渐减小。C1在600℃时的热膨胀系数为7.01×10K,抗折强度为115MPa,硬度达为8.0GPa。MgO-Al2O3-SiO2 glass-ceramics were prepared by cast method. The crystallization properties and high-temperature viscosity of the samples were investigated by DTA, XRD and SEM. The relationship between A12OJSiO2 and crystallization and properties of the glass-ceramics were discussed. The results show： The main phase of the glass-ceramics was forsterite phase and with the reducing of A1203/SiO2, the intensity of diffraction peak decreased gradually. The subordination crystallization phasees were a-cordierite and enstatite. With the reducing of Al2O3/SiO2, the thermal expansion coefficient of the samples increased, bending intensity and rigidity also increased at the same time. The thermal expansion coefficient of glass-ceramics Cl was 7.01×10-6 Kq in 40- 600℃, bending strength was 115 MPa, Vickers hardness was 8.0 Gpa.

关 键 词：微晶玻璃 NMAS系 组成 

分 类 号：TU528.01[建筑科学—建筑技术科学]