CaF_2对自然冷却黄磷炉渣微晶玻璃析晶行为影响  

Effect of CaF_2 on Crystallization Behavior of Glass-ceramics Prepared Using Natural Cooling Yellow Phosphorus Furnace Slag

作　　者：黄小凤[1] 李国标[1] 刘红盼[1] 马丽萍[1] 付建秋 蒋明[2] 

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650500 [2]云南农业大学资源与环境学院,昆明650201

出　　处：《人工晶体学报》2015年第7期1968-1974,共7页Journal of Synthetic Crystals

基　　金：昆明理工大学校级人培项目基金(KKZ3201422009);昆明理工大学分析测试基金(20140541;20140527)

摘　　要：借助DTA、SEM、XRD等分析测试手段,研究氟化钙晶核剂含量对自然冷却态黄磷炉渣微晶玻璃析晶及其性能的影响规律。利用修正后的JMA方程计算微晶玻璃的析晶活化能E及晶体生长指数n动力学参数。结果表明:Ca F2晶核剂的引入可以促进微晶玻璃的析晶,改变析晶峰温度和活化能。随着Ca F2进一步添加并不能改变主晶相(硅灰石)类型,而是生成新的Ca F2晶相,同时改晶粒尺寸。当添加2.5wt%Ca F2时,微晶玻璃的析晶动力学参数最优,产品性能优异,可以作为优良的建筑装饰材料。The effects of different CaF2 contents on the glass-ceramics crystallization and properties of glass-ceramics obtained from natural cooling yeIlow phosphorus furnace slag were studied by differential thermal analysis（DTA）, scanning electron microscope（SEM）, X-ray diffraction（XRD） and so on. The crystallization activation energy E and Avrami exponent n were calculated by modified Johnson-Mehl- Avrami （JMA）. The results show that the CaF2 nucleating agent can effectively promote the crystallization of the glass-ceramics, and change crystallization peak temperature （Tp） and activation energy （E）. Continuing adding CaF2 cant change the type of main crystalline phase （wollastonite-2M）, instead, it creates Calcium Fluoride crystalline phase, and changes grain size at the same time. Tp and E will reach the lowest when adding 2.5wt% CaF2, and the properties of glass-ceramics is suitable for excellent building decoration materials.

关 键 词：黄磷炉渣 微晶玻璃 晶核剂 析晶 CAF2 

分 类 号：TQ171[化学工程—玻璃工业]