TiO_2和Cr_2O_3复合晶核剂对微晶玻璃晶化行为的影响

Effects of Composite Nucleation Agents TiO_2 and Cr_2O_3 on Crystallization Behavior of Glass-ceramics

通过差热分析、X射线衍射分析、偏光显微镜和扫描电镜观察等测试方法 ,研究了TiO2 和Cr2 O3作晶核剂对金属尾矿微晶玻璃晶化行为的影响 .研究表明 :Cr2 O3 和TiO2 复合晶核剂能有效地促进CaO -MgO -Al2 O3-SiO2 系统玻璃在较低温度下即开始晶化 ,且形成以透辉石为主晶相的微晶玻璃 ,晶核剂质量浓度不同对玻璃析晶的影响不同 .

The influence of nucleation agents TiO 2 and Cr 2O 3 on the crystallization behavior of building glass ceramics of metallic tailings is studied by DTA, XRD, polarization microscope and SEM. The results show that the glasses in CaO MgO Al 2O 3 SiO 2 system start crystallization at a lower temperature due to the effect of composite nucleating agents, and predominant crystal phase is diopside. When Cr 2O 3 and TiO 2 are increased, crystallization strength and crystal are increased.