摘要
以混凝土淤渣为主要原料制备了3种不同配比的玻璃陶瓷材料,应用X射线衍射和扫描电子显微镜技术探讨了混凝土淤渣玻璃陶瓷的析晶及显微组织特征。结果表明,在添加氟化物和FeS的混凝土淤渣玻璃中,析出晶体为镁黄长石(Ca2MgSi2O7)和少量的钙长石(CaAl2Si2O8)。而当在混凝土淤渣玻璃中添加MgO及少量ZnO与MnO后,析出晶体主要为镁黄长石。提高混凝土淤渣玻璃中ZnO含量后,试样中析出相为硅灰石(CaSiO3)和少量锌黄长石(CaZnSi2O7)。在不同混凝土淤渣掺杂量的玻璃中,通过调整热处理制度都可以使晶体整体析出。
Using concrete sludge as main materials, three kinds of glass ceramics were successfully prepared. The characteristics of crystallization and microstructures of glass-ceramics were examined by x-ray diffraction （XRD） and scanning electronic micrography （SEM） techniques. The results indicate that in the glass of concrete sludge with fluorine and FeS adding, the crystalline phases are akermanite （Ca2MgSi2O7） as major phase and anorthite（CaAl2Si2O7）as minor phase. While in the glass with the addition of MgO and a little ZnO and MnO, only crystalline phase of akermanite is observed. The increase of ZnO and concrete sludge contents is favorable to the precipitation of wollastonite（CaSiO3） and hardystonite（CaZnSi2O7） phases. It is found that in the glass ceramics with various contents of concrete sludge, the ＂bulk＂ crystallization is always obtained by adjusting the additions and thermal treatment schedules.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第A01期979-982,共4页
Rare Metal Materials and Engineering
基金
建设部开发计划项目(05-K4-2)
关键词
玻璃陶瓷
混凝土淤渣
添加剂
析晶
glass-ceramics
concrete sludge
addition agents
crystallization
