摘要
以硝酸铝和硝酸钇为原料,以碳酸氢铵为沉淀剂,采用共沉淀法合成铝和钇的碳酸盐作为反应前驱体,同时借助IR、XRD和TEM等测试手段对不同浓度盐溶液所得前驱体和煅烧产物进行表征。结果表明:盐溶液浓度的升高不利于纯相YAG粉体的合成,当铝离子浓度达到0.05mol/L时,前驱体在900℃保温2h可以得到纯相YAG粉体,粉体分散性好,平均粒径为30～40nm,近球形;而当浓度大于0.5mol/L时,前驱体只有在1 200℃以上才可以形成纯相YAG。
Yttrium aluminum garnet（YAG） nano-sized powder was synthesized by means of the co-precipitation method taking the ammonium hydrogen carbonate as precipitant.The resulting precursor precipitant and calcined product were characterized with the test means of infrared radiation（IR）,X-ray diffraction（XRD） and transmission electron microscope（TEM）.The results show that high concentration of Al3＋ is not good for the formation of YAG crystallites,and the pure phase YAG crystallites are obtained by calcining at 900 C for 2 h when the concentration of Al3＋ is 0.05 mol/L.The synthesized product consists of highly dispersed nano-sized particles with the average size of 30 nm to 40 nm.Higher sintering temperature is needed for pure phase YAG crystallites when the concentration of Al3＋ is above 0.5 mol/L.
出处
《山东科技大学学报（自然科学版）》
CAS
2012年第1期80-83,共4页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
钇铝石榴石
共沉淀法
前驱体
透明陶瓷
纳米粉体
yttrium aluminum garnet
co-precipitation
precursor
transparent ceramics
nano-sized powder
