【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。更多还原

【Abstract】 Sintering CaO-Al2O3-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 investigate how MnO2 affected on the glass-ceramic microstructure,crystal phase types;the chemical durability of glass-ceramics was analyzed.The results showed that When MnO2 less than 5.5%,the main phase was not changed,but crystallization 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.更多还原