铝合金表面腐蚀诱导的表面微纳结构与电子功函数的关联性研究  

Studies on the Correlation between Corrosion-induced Surface Morphology and Electronic Work Function in Al Alloys

作　　者：薛名山[1] 谢娟[1] 欧军飞[1] 王法军[1] 李长全[1] 黄春平[1] 李文[1] 

机构地区：[1]南昌航空大学,江西南昌330063

出　　处：《南昌航空大学学报（自然科学版）》2011年第4期80-85,79,共7页Journal of Nanchang Hangkong University(Natural Sciences)

基　　金：国家自然科学基金(211030845;1061014);航空科学基金(2010ZE56012;2009ZF56021)

摘　　要：以铝合金(5A025、0836、A02)为研究对象,以3.5%NaCl溶液和0.5%HCl溶液为腐蚀介质,系统地研究了铝合金的腐蚀行为及其表面形貌与电子功函数之间的关系。实验结果显示,相比HCl溶液的腐蚀,NaCl溶液的腐蚀增加了铝合金表面的粗糙度。电子功函数的变化与腐蚀时间呈非线性变化关系。进一步结合理论和实验结果发现,表面电子功函数与表面形貌变化有密切的关联性,随着表面粗糙度的增加,电子功函数增大。In this study,the effect of corrosive behaviors on surface morphology and EWF of various Al alloys（5A02、5083、6A02） was comparatively investigated in 3.5% NaCl solution and 0.5% HCl solution using a scanning electron microscopy and a scanning Kelvin probe.The results showed that the choice of the corrosive solutions had an important effect on the surface roughness and the EWF.With an increase of corrosion time,the EWF was firstly increased and then decreased until it kept constant.The analysis results indicated that the change of the EWF was associated with the evolution of surface roughness.Furthermore,a rougher surface morphology corresponded to a larger EWF.

关 键 词：铝合金 电子功函数 微纳结构 电子结构 表面腐蚀 

分 类 号：TU512.4[建筑科学—建筑技术科学]