凝胶–燃烧法制备掺钕四硼酸铝钇纳米粉体  

SYNTHESIS OF Nd^(3+)-DOPED YTTRIUM ALUMINUM BORATE NANOMETER POWDER BY GEL COMBUSTION METHOD

作　　者：李桂芳[1] 曹全喜[1] 马俊红[1] 张红国[1] 

机构地区：[1]西安电子科技大学技术物理学院,西安710071

出　　处：《硅酸盐学报》2008年第1期25-29,共5页Journal of The Chinese Ceramic Society

摘　　要：以硝酸盐为原料、柠檬酸为络合剂,采用凝胶–燃烧法成功制备出了掺钕的四硼酸铝钇[Nd3+:YAl3(BO3)4,Nd:YAB]纳米粉体。分别采用热重–差热分析、X射线衍射、Fourier变换红外光谱和扫描电子显微镜表征了不同温度下焙烧所得粉体的物相、形貌以及前驱体热分解特性。结果表明:Nd:YAB的最低合成温度为1000℃,与固相合成方法的最低合成温度相比降低了200℃。在反应过程中,首先形成中间相Al4B2O9,YBO3和Y3Al5O12,而最终形成单相的Nd:YAB。在1000℃合成Nd:YAB粉体的晶粒尺寸比较均匀,平均粒径为89.3nm。Nd3＋-doped yttrium aluminum borate （Nd3＋：YAl3（BO3）4, Nd：YAB） nano-sized powder was synthesized by a gel combustion method using Al（NO3）3·9H2O, Y（NO3）3·6H2O, C6H8O7·H2O, B2O3 and Nd2O3 as starting materials. The precursor was calcined to powder at different temperatures. The composition and phase structure of the as-prepared powder were characterized by thermal gravimetric–differential thermal analysis, X–ray diffraction, Fourier transform infrared and scanning electron microscopy. The results show that the purified Nd：YAB crystalline phase can be obtained at 1 000 ℃ , which is 200 ℃ lower than that by solid-state method. The intermediate phase, yttrium borate, aluminum borate and yttrium aluminum garnet, are generated first, and finally single-phase of Nd：YAB with a trigonal structure is produced. The as-prepared powder at 1 000 ℃ consists of relatively homogeneous particles with an average diameter of 89.3 nm.

关 键 词：四硼酸铝钇 纳米粉 溶胶–凝胶 燃烧 

分 类 号：TQ174.4[化学工程—陶瓷工业]