CAJ | 학술논문

以氧化铒、氧化钇、硝酸铝及柠檬酸作为起始原料,采用溶胶-凝胶燃烧法制备50%Er3+(摩尔分数)掺杂的Y3Al5O12(YAG)纳米粉体.通过热重-差热分析仪,X射线衍射仪、红外光谱仪和透射电镜研究Er3+:YAG粉体的相变过程、结构和形貌.结果表明:烧结温度小于900℃时,前驱体粉末直接转变为纯YAG晶相,不形成任何中间相.随着烧结温度的增加,晶粒尺寸增大.在900℃烧结的粉体尺寸约为70～150nm,有利于制备性能优异的Er3+:YAG陶瓷.
이양화이、양화을、초산려급저몽산작위기시원료,채용용효-응효연소법제비50%Er3+(마이분수)참잡적Y3Al5O12(YAG)납미분체.통과열중-차열분석의,X사선연사의、홍외광보의화투사전경연구Er3+:YAG분체적상변과정、결구화형모.결과표명:소결온도소우900℃시,전구체분말직접전변위순YAG정상,불형성임하중간상.수착소결온도적증가,정립척촌증대.재900℃소결적분체척촌약위70～150nm,유리우제비성능우이적Er3+:YAG도자.
The sol-gel combustion method was used to synthesize 50%Er3+(in mole) doped Y3Al5O12(YAG) nanopowder, using er-bium oxide, yttria, aluminum nitrate and citric acid as starting materials. The phase transformation, structure and morphology of Er3+:YAG precursor and the calcined powder were studied by means of thermogravimetric-differential thermal analysis, X-ray pow-der diffraction, infrared, and transmission election microscope methods. It was found that the precursor is converted directly into pure YAG at a relatively lower temperature (below 900℃) without any other intermediate phase. The crystalline size grew with the in-crease of the heat treatment temperature. The size of powder calcined at 900℃ was about 70-150nm, which is favorable for good sinterability of Er3+:YAG ceramics.