中国化工贸易
中國化工貿易
중국화공무역
CHINA CHEMICAL TRADE
2013年
1期
110
,共1页
宋琼%苏春辉*%朱晓薇%宋阳成%王春燕
宋瓊%囌春輝*%硃曉薇%宋暘成%王春燕
송경%소춘휘*%주효미%송양성%왕춘연
共沉淀法%掺钕钇铝石榴石%核壳结构
共沉澱法%摻釹釔鋁石榴石%覈殼結構
공침정법%참녀을려석류석%핵각결구
co-precipitation method%neodymium doped-yttrium aluminum garnet%core-shell structure
采用共沉淀法,以Al(NO3)·9H2O,Y2O3,Nd2O3和NH4HCO3为原料,正硅酸乙酯为添加剂,制备出Nd:YAG纳米前驱体粉末.探讨了共沉淀法制备Nd:YAG纳米粉末的反应机理.研究结果表明:当pH值达到2.97时溶液出现沉淀;混合溶液生成沉淀物是由Al3+的沉淀所决定的;Al3+首先均相成核,随后Y和Nd离子以Al沉淀物为异相核发生异相成核,形成的碳酸钇正盐均匀地包覆在碳酸铝沉淀物的表面上,形成核壳结构.
採用共沉澱法,以Al(NO3)·9H2O,Y2O3,Nd2O3和NH4HCO3為原料,正硅痠乙酯為添加劑,製備齣Nd:YAG納米前驅體粉末.探討瞭共沉澱法製備Nd:YAG納米粉末的反應機理.研究結果錶明:噹pH值達到2.97時溶液齣現沉澱;混閤溶液生成沉澱物是由Al3+的沉澱所決定的;Al3+首先均相成覈,隨後Y和Nd離子以Al沉澱物為異相覈髮生異相成覈,形成的碳痠釔正鹽均勻地包覆在碳痠鋁沉澱物的錶麵上,形成覈殼結構.
채용공침정법,이Al(NO3)·9H2O,Y2O3,Nd2O3화NH4HCO3위원료,정규산을지위첨가제,제비출Nd:YAG납미전구체분말.탐토료공침정법제비Nd:YAG납미분말적반응궤리.연구결과표명:당pH치체도2.97시용액출현침정;혼합용액생성침정물시유Al3+적침정소결정적;Al3+수선균상성핵,수후Y화Nd리자이Al침정물위이상핵발생이상성핵,형성적탄산을정염균균지포복재탄산려침정물적표면상,형성핵각결구.
The Nd:YAG precursor powders by the homogeneous coprecipitation method, using Nd2O3, Y2O3, Al(NO3)3·9H2O and NH4HCO3 as raw materials, TEOS as sintering additive. Discusses the homogeneous precipitation method for the preparation of Nd:YAG nanometer powder and reaction mechanism.The results show that: when the pH value reaches 2.97, solution appeared precipitation; the mixed solution is composed of Al3+ precipitate precipitate decision; Al3+first homogeneous nucleation, then Y3+ and Nd3+occurs heterogeneous nucleation, the precipitate formed covered in Al precipitate on the surface, forming a unique yttrium coated aluminum structure.
