多孔阳极氧化铝形成机理新解释

New Explanation of Formation Mechanism in Porous Anodic Alumina

铝经过阳极氧化可生成多孔阳极氧化铝(PAA),其形成机制一直没有满意的解释。本文详细分析了其形成过程,结合已有理论给出了更合理的解释,我们认为,在PAA形成过程中,不同阶段控制因素不同,孔的最先形成是氧气气泡模具效应的结果,而后在酸性场致溶解的作用下,孔洞不断生长完善。

Aluminum can generate porous anodic alumina （PAA）by anodized which formation mechanism has not been given a satisfactory explanation. This paper detailedly analyzes the processes and gives a more reasonable explanation. In the processes of PAA, the different stages with the different factors controlling, the nanotube originated from the result of oxygen bubble mould effect but the developing depends on acidic field-assisted dissolution at the later stage.