沉淀法制备氟氧化钇粉体及其表征  

Preparation and Characterization of Yttrium Oxyfluoride by Precipitation

作　　者：李维华 郝先库[2] 张瑞祥[2] 许宗泽[2] 马显东 姜东波 胡珊珊[2] 

机构地区：[1]内蒙科技大学材料与冶金学院,包头014010 [2]包头市京瑞新材料有限公司,包头014015

出　　处：《材料导报（纳米与新材料专辑）》2011年第1期137-140,共4页

摘　　要：以氯化钇溶液为原料,碳酸氢铵溶液为沉淀剂,氢氟酸为氟化剂制备了氟氧化钇粉体。利用X射线衍射分析仪表征氟氧化钇粉体的晶体结构组成,用激光粒度仪表征粒径分布,用SEM和能谱仪表征形貌和化学成分。结果表明,最佳的制备工艺条件为:沉淀温度60℃,氯化钇浓度0.2mol·L^(-1),碳酸氢铵浓度1.0mol·L^(-1),滴加速度10mL·min^(-1),氟化温度20℃,灼烧温度700℃,在此条件下得到粒度分布均匀、形貌为针状的氟氧化钇粉体。Yttrium oxyfluoride was synthesized in aqueous solution by reacting with yttrium chloride as the raw material, ammonium hydrogen carbonate as the precipitator, and hydrofluoric acid as the fluridizer. XRD, particle size apparatus, TEM and EDS have been used to characterize the physical performance of yttrium oxyfluoride, to study effects of calcination temperature on crystal structure, particle size, appearance and chemical component of yttrium oxyfluoride. The results indicate that the best conditions of.preparation technics are： precipitation temperature at 60℃, concentration of YC13 at 0. 2mol·L^-1 ,concentration of NH4 HCO3 at 1.0mol· L^-1 ,dripping speed at 10mL · min^-1, fluridizing temperature at 20℃, sintering temperature at 700℃, in which yttrium oxyfluoride of homo-distributing particle size and acetate appearance can be gained.

关 键 词：沉淀法 氟氧化钇 制备 表征 

分 类 号：TQ460.6[化学工程—制药化工]