微尺度铝膜自氧化及其在防伪标签中的应用研究  

Self-oxidation of micro-scale aluminum and its application of anti-counterfeiting label

作　　者：万祥龙[1] 陈习惠 王叶[1] 黄军高 闵凡飞[1] 郝国防[2] Wan Xianglong Chen Xihui Wang Ye Huang Jungao Min Fanfei Hao Guofang(School of Materials Science and Engineering,Anhui University of Science and Technology, Huainan 232001 Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190)

机构地区：[1]安徽理工大学材料科学与工程学院,淮南232001 [2]中国科学院过程工程研究所,北京100190

出　　处：《化工新型材料》2017年第10期215-217,共3页New Chemical Materials

基　　金：教育部回国人员科研启动基金(第48批);安徽高校自然科学研究重点项目(KJ2015A104);安徽省博士后基金项目(2015B061)

摘　　要：利用微尺度铝膜制作的防伪标签是一种新型的基于铝薄膜自氧化机理的装置。通过在器件中设置不同的电极,让器件中的微尺度铝膜在空气中吸湿或加电解质溶液后连接两个电极,使铝膜发生自氧化。通过金相显微镜观察氧化后的氧化物的形貌,发现在氧化的不同阶段出现了不同形貌的晶体,利用紫外-可见光区的光谱评价其透过性。结果表明:微尺度铝膜在器件中自氧化后在可见光波段内透过率高,因此可以被设计应用于防伪标签中。最后讨论了两种可能被应用于防伪标签的结构与机理。New types of anti-counterfeiting labels based on self-oxidation of micro-scale aluminum are presented.The aluminum with micro-scale structure was oxidized with another different potential electrode in the electrolyte,which was given or absorbed the humidity in environment.The different areas of micro-scale aluminum before and after self-oxidation were studied by metallurgical microscope and UV-visible absorption spectrum.The results showed that after the oxidation of micro-scale aluminum film,the different crystals were appeared during the process of oxidation and the film became transparent.The labels for anti-counterfeiting were cheap and based on irreversible chemical reactions which can be used one time in the structured films.This mechanism can be applied to two different applications at least.

关 键 词：防伪标签 微尺度铝膜 自氧化 枝状晶 透明度 

分 类 号：TB481[一般工业技术—包装工程]