钇掺杂对氧化铝膜的热稳定性及其孔结构的影响  

Effect on the thermal stability and pore-structure of Al_2O_3 membrane doped with yttrium

作　　者：俞建长[1] 徐卫军[1] 黄清明[1] 胡胜伟[1] 

机构地区：[1]福州大学材料科学与工程学院,福建福州350002

出　　处：《福州大学学报（自然科学版）》2005年第6期766-770,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省教育厅科研资助项目(JB01002)

摘　　要：以异丙醇铝和Y(NO3)3为主要原料,用溶胶-凝胶法制备掺杂钇的无支撑Al2O3膜,采用XRD、DTA-TG、BET等测试手段分析钇的掺杂对Al2O3膜的物相组成、热稳定性、以及Al2O3膜孔结构在不同煅烧温度时的影响.研究结果表明:掺杂钇能提高γ-Al2O3相向α-Al2O3相的转变温度和Al2O3膜的热稳定性.钇的掺杂也明显了改善了Al2O3膜在高温煅烧中的孔结构参数.Yttrium doped Al2O3 membrane was synthesized by a sol - gel process using aluminum isopropoxide and Y（NO3）3 as raw materials. Phase of constitute, the thermal stability and pore - structure of Y doped Al2Os membrane were characterized by the measurements of XRD, DTA - TG, LR, BET, etc. The results show that the addition of yttrium can increase the transformation temperature when the phase of γ - Al2O3 changes into α-Al2O3, as well as the thermal stability of Al2O3 membrane. Also, the addition of yttrium can improve the parameters of pore - structure of Al2O3 membrane in high temperature.

关 键 词：Al2O3膜 钇掺杂 热稳定性 孔结构 

分 类 号：TQ174[化学工程—陶瓷工业]