摘要
以高铁赤泥、SiO2等成分为原料,通过熔融-热处理法制备CaO-SiO2-Fe2O3-Al2O3体系的赤泥基微晶玻璃.表征母玻璃和热处理后的微晶玻璃的物相组成、微观形貌,计算结晶度以及测试抗弯强度性能等.通过Rietveld全谱拟合方法对各组微晶玻璃的结晶度进行计算,对比分析发现,热处理后微晶玻璃的结晶度增加,随着SiO2的添加会使得微晶玻璃的结晶度降低.对微晶玻璃进行抗弯强度测试,抗弯强度随着SiO2/赤泥的增加而增大.
Red mud-based glass-ceramics of CaO-SiO2-FeO3-Al2O3 system were prepared by melting-heat treatment from high-iron red mud with some SiO2.The phase composition,morphology,crystallinity and bending strength of parent-glass and heat treated glass-ceramics were characterized.The crystallinity of each group of glass-ceramics was calculated by Rietveld full-spectrum fitting method.It is found that the crystallinity of glass-ceramics increases after heat treatment,and decreases with the addition of SiO2.The flexural strength of glass-ceramics increases with the increase of SiO2/red mud.
作者
屈振民
张帅
张延玲
QU Zhenmin;ZHANG Shuai;ZHANG Yanling(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China)
出处
《有色金属科学与工程》
CAS
2019年第4期34-38,71,共6页
Nonferrous Metals Science and Engineering
基金
国家自然科学基金资助项目（51674022）
关键词
微晶玻璃
赤泥
结晶度
glass-ceramic
red mud
crystallinity
