CaF_2纳米粉体的制备与表征分析  

Preparation and Characterization of CaF_2 Nano-powder

作　　者：董梦云 张骋[1] 蒋丹宇[2] 夏金峰 粘洪强[2] 

机构地区：[1]上海应用技术学院材料科学与工程学院,上海200235 [2]中国科学院上海硅酸盐研究所,上海200050

出　　处：《中国陶瓷》2016年第1期71-76,共6页China Ceramics

基　　金：校复合材料学科建设资助(10210Q140001)

摘　　要：以硝酸钙、氟化钾为原料,去离子水为反应介质,采用直接沉淀法制备出Ca F2纳米粉体,探究了不同预烧温度对Ca F2纳米粉体的形貌和粒径的影响以及不同烧结温度对Ca F2陶瓷的影响。通过X-射线衍射仪(XRD)、扫描电子显微镜(SEM)等测试技术对样品的晶相、晶型和粒径等进行了表征。结果表明:采用直接沉淀法制备出的Ca F2纳米粉体具有氟化钙萤石结构。采用XRD、SEM等表征手段分析得到Ca F2纳米粉体的平均晶粒尺寸在50 nm左右,粉体分散性好,粒径分布均匀;Ca F2纳米粉体的最佳预烧温度是500℃;Ca F2陶瓷的最佳烧结温度是900℃。CaF2 nano-powders was prepared by the direct precipitation method with Ca（NO3）2 and KF as raw materials, deionized water as reaction solvent. The influence of pre-sintering temperature and sintering temperature on the morphology and particle size CaF2 nano-powders were investigated. The crystal phase and particle size were characterized by X-ray diffraction（XRD） and scanning electron microscopy（SEM）. The results show that the as-prepared well dispersed CaF2 nano-powders was the structure of fluorite with the average grain size of 50 nm. The best pre-sintering temperature of CaF2 nano-power is 500 ℃ and the best sintering temperature of CaF2 ceramic is 900 ℃.

关 键 词：纳米粉体 直接沉淀法 CaF2陶瓷 

分 类 号：TQ174.43[化学工程—陶瓷工业]