CAJ | 학술논문

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。
이초산려화초산을위원료,이탄산경안위침정제,채용공침정법합성려화을적탄산염작위반응전구체,동시차조IR、XRD화TEM등측시수단대불동농도염용액소득전구체화단소산물진행표정。결과표명：염용액농도적승고불리우순상YAG분체적합성,당려리자농도체도0.05mol/L시,전구체재900℃보온2h가이득도순상YAG분체,분체분산성호,평균립경위30～40nm,근구형;이당농도대우0.5mol/L시,전구체지유재1 200℃이상재가이형성순상YAG。
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.