LY12铝合金表面铈纳米膜的制备及显微组织特征  

Process and microstructure characters of ceria nanocrystalline film on aluminium alloy LY12

作　　者：纪红[1] 许越[2] 周德瑞[1] 周育红[1] 

机构地区：[1]哈尔滨工业大学应用化学系,黑龙江哈尔滨150001 [2]北京航空航天大学材料科学与工程学院,北京100083

出　　处：《航空材料学报》2003年第1期21-23,共3页Journal of Aeronautical Materials

摘　　要：采用Sol-gel提拉法在LY12铝合金表面制备了铈的纳米膜。研究了成膜的最佳工艺条件。试验结果表明,处理溶液中铈的起始浓度、焙烧温度等都是影响膜质量的因素。在焙烧温度为400℃,铈的起始浓度为30g/L的条件下,可获得均匀,重复性好的膜。XPS测试结果证明了膜的主要成分为铈的氧化物,利用XRD测试结果估算出膜中的铈的粒径为10纳米。扫描电镜的结果指出了焙烧温度高低对膜层表面结构特征的影响。A ceria nanocrystalline thin film is obtained on the surface of aluminum alloy LY12 by a novel dipcoating solgel process with alcohol and collodion The suitable conditions of technology are established The expetiment shows that the original concentration of cerous nitrate solution and the calcine temperature influence the film quality When temperature is 400℃, the concentration of cerous nitrate solution is 30g/L,a fine film can be obtained The constituents of the film was studied by Xray photoelectron spectroscopy (XPS), and the results indicate that the film consists of cerium and oxygen Xray diffraction (XRD) analysis results show that cluster in the ceric thin film is 10 nanometer The influence of temperature on surface microstructure is indicated by the restults of SEM

关 键 词：LY12铝合金 铈 纳米膜 制备 显微组织 溶胶-凝胶 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TB43[金属学及工艺—金属材料]