掺钕钇铝石榴石透明激光陶瓷的制备及其显微结构  

Preparation and Microstructure of Nd-Doped Yttrium Aluminum Garnet Transparent Laser Ceramics

作　　者：李桂芳[1] 曹全喜[1] 李双春[1] 苏莎莎[1] 

机构地区：[1]西安电子科技大学技术物理学院,陕西西安710071

出　　处：《稀有金属材料与工程》2007年第A01期165-168,共4页Rare Metal Materials and Engineering

基　　金：陕西省攻关项目(2005k06-G11)

摘　　要：以Al(NO3)3·9H2O、Y(NO3)3·6H2O和Nd2O3为原料,采用硝酸盐热分解法在1000℃左右合成了单相Nd:YAG陶瓷超细粉体。采用XRD及SEM等测试手段对Nd:YAG陶瓷材料进行了表征。结果表明,当焙烧温度为1000℃时,前驱粉体可以直接得到YAG立方晶相,没有YAM和YAP等中间相生成,煅烧所得的粉末颗粒细小均匀,呈椭球状,分散性较好,粒径在150～200nm之间。使用0.5%(质量分数,下同)的正硅酸乙酯作为烧结添加剂,前驱粉体经1700℃真空热压烧结5h后得到具有一定透明度的Nd:YAG多晶陶瓷,晶粒大多在3～4μm之间,晶界间还分布着少量的气孔。Single phase of Nd：YAG powder were synthesized at 1000℃ by the evaporation of its nitrate solution method using Al（NO3）3·9H2O, Y（NO3）3·6H2O and Nd2O3 as starting materials. The Nd：YAG transparent ceramics materials were characterized by the XRD and SEM. The results show that the precursor completely transforms to YAG phase at about 1000 ℃ without the intermediate phase of YAM and YAP. The dispersive and flowing properties of the particle are very good and the grain size of Nd：YAG is at the range of 150-200 nm. With the addition of 0.5wt% tetraethyl orthosilicate as the sintering aid, transparent Nd：YAG ceramics with a few pores were fabricated by vacuum sintering at 1700 ℃ for 5 h and the grain size is about 3-4 μm.

关 键 词：掺钕钇铝石榴石 硝酸盐热分解法 透明陶瓷 

分 类 号：TQ174.1[化学工程—陶瓷工业]