MnO_2对磷渣微晶玻璃显微结构和性能的影响  

Effect of MnO_2 on the Microstructure and Properties of Phosphorous Slag Glass-ceramic

作　　者：汤李缨[1] 韩荣荟[1] 全健[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《武汉理工大学学报》2012年第6期6-9,共4页Journal of Wuhan University of Technology

基　　金：湖北省教育厅产学研重大专项(2009lg0043)

摘　　要：烧结法CaO-Al2O3-SiO2微晶玻璃具有结构致密均匀,抗冲击、耐磨、耐腐蚀、无放射性、色泽丰富、纹理美观等特性,是一种新型绿色环保型装饰材料。以磷渣为主要原料,以Fe2O3和MnO2为着色剂,制备了米黄色微晶玻璃。利用X射线衍射和扫描电子显微镜等测试技术,研究了不同MnO2含量对微晶玻璃显微结构、晶相种类的影响,测定了微晶玻璃的化学稳定性。研究结果表明:当MnO2质量含量小于5.5%时,微晶玻璃主晶相为β-硅灰石,随着MnO2含量的增加析晶量减少,晶粒尺寸由0.42μm减小到0.3μm;当MnO2质量分数为6%时,主晶相变为钠长石且析晶量增加、晶体尺寸增大。当MnO2质量分数大于4%时,MnO2质量分数每增加0.5%其摊平温度约降低10℃,适量加入MnO2使其化学稳定性提高。Sintering CaO-Al2 O3-SiO2 glass-ceramic has compact and uniform structure, impact resistance, wear resistance, corrosion resistance, no radiation, rich color, beautiful texture features. It＇s a new environmental-friendly decorative material. In this paper, phosphorus slag was used as the main raw material, Fe2O3 and MnO2 as a coloring agent for preparation of beige glass-ceramics. X-ray diffraction, scanning electron microscope and other tests were used to investi- gate how MnOz affected on the glass-ceramic microstructure, crystal phase types; the chemical durability of glass-ceram- ics was analyzed. The results showed that When MnO2 less than 5.5%, the main phase was not changed, but crystalliza- tion was reduced, the size of crystals decreased from 0.42 μm to 0. 3 μm; when MnO2 was 6%, the main phase became albite, the crystallization and the size of crystals all were increased. When MnO2 was more than 4%, each increased of 0. 5% MnO2 lower the flattening temperature about 10℃, appropriate content of MnO2 improved the chemical durability.

关 键 词：磷渣 析晶 MNO2 显微结构 化学稳定性 

分 类 号：TQ171.73[化学工程—玻璃工业]