共沉淀法制备Nd:YAG纳米粉体的反应机理研究  

Study on Synthesis Mechanism of Nd: YAG Nano-Powder by Co-Precipitation Method

作　　者：陈晶[1] 杨付[1] 周志鹏[1] 高宪娥[1] 陈中文[1] 陆洋[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所

出　　处：《舰船防化》2011年第2期6-11,共6页

摘　　要：以Al（NO3）3·9H2O、Nd（NO3）3·6H2O、Y（NO3）3·6H2O和NH4HCO3为原料，采用共沉淀法制备出纯相的Nd：YAG纳米粉体。借助FT-IR、TG／DTA、XRD等测试手段对前驱体和Nd：YAG纳米粉体进行了表征，根据表征结果，推断了合成机理与成相机理。研究结果表明：合成过程中Y和Al元素按照3：5的比例均匀沉淀下来，形成包裹型结构的前驱体4[Al（OH）3]·6[Al（OH）CO3]·3[Y2（CO3）3·3H2O]·3．74H2O，煅烧时无定型的前驱体经由六方结构和钙钛矿结构的YAlO3（YAP），在1000℃直接转变为立方结构的Nd：YAG纳米粉体，晶粒大小20nm左右。The Nd：YAG nano-powder with pure cubic crystal phase was synthesized by the co-precipitation method, using Al（NO3）3·9H2O、Nd（NO3）3·6H2O、Y（NO3）3·6H2O and NH4HCO3 as raw materials. The precursor and Nd：YAG nano-powder were characterized by the FT-IR, TG / DTA and XRD. The results showed that the yttrium and aluminum elements were precipitated with stoichimometric ratio of 3：5, and the precursor with package structure which was composed of 4[Al（OH）3]·6[Al（OH）CO3]·3[Y2（CO3）3·3H2O]·3.74H2O was generated. It transformed to pure YAG crystal directly via hexagonal and perovskite YAlO3 calcined at 1000℃, the crystallite size was about 20nm.

关 键 词：ND:YAG 共沉淀法 纳米粉体 

分 类 号：TF123[冶金工程—粉末冶金]