作　　者： ; ; ; ;

机构地区： 广东工业大学材料与能源学院

出　　处： 《无机盐工业》 2014年第6期21-23,共3页

摘　　要： 以碳酸氢铵或氨水为沉淀剂，采用化学共沉淀法制备Yb：YAG透明陶瓷纳米粉体，利用扫描电镜、X射线衍射对粉体的形貌和物相结构进行表征。研究表明：以碳酸氢铵为沉淀剂制备的前驱体在1200℃煅烧后可制得无杂质的YAG（Y3Al5O12）粉体，以氨水为沉淀剂制备的前驱体在1200℃煅烧后制得的YAG粉体中有杂质相YAM（Y4Al2O9）；以碳酸氢铵为沉淀剂制备的YAG粉体的分散性好，碳酸氢铵溶液与母盐溶液中铝离子浓度最佳配比为10：1。粉体粒度在100—250nm。 Yb：YAG transparent ceramic nano-powder was prepared by chemical co-precipitation method, with ammonium bi- carbonate or ammonia as the precipitant.The morphology and phase structure of Yb：YAG nano-powder were characterized by scanning electron microscopy （SEM） and X-ray diffraction （XRD）.Resuhs showed that pure YAG phase nano-powder was obtained by calcining the precursors prepared by using ammonium bicarbonate as the precipitant at 1 200 ℃.However,YAM （Y4A12O9） phase was found in the XRD patterns of the Yb：YAG powders synthesized by co-precipitation method using ammo- nia as precipitant at 1 200 ℃.Well dispersive,pure YAG nano-powders with the particle size in the range of 100-250 nm were obtained by calcining the precursor prepared by using ammonium bicarbonate as the precipitant and the optimum con- centration ratio of NH4HCO3 to Al3＋ was 10：1.

关 键 词： 共沉淀法 沉淀剂 纳米粉体

领　　域： [化学工程] [化学工程]