Ultrasmall nanopores obtained by electric field enhanced one-step anodisation of aluminium alloy

作者：Wang J Y; Li C^*; Yin C Y; Wang Y H; Zheng S L

来源：Surface and Coatings Technology, 2014, 258: 615-623.

DOI：10.1016/j.surfcoat.2014.08.027

• AA 5083
• Nanopores
• Electric field
• Microstructure
• Anti-corrosion

The influence of electric fields at different temperatures on the anodic oxide layer growth was studied on AA 5083. Barrier-type alumina layers showed a fair morphology with multiform pores. The diameter of dominating pores performed a transversal amplification from barrier-type layer to pore structure. The pore cells were perpendicular with column constriction near the second-phase particles and parallel with the layer growth. Both the barrier-type oxide layer and porous oxide layer perform excellent corrosion protection on aluminium substrate with the corrosion current density of 10(-10) A/cm(2) and transfer impedance of 10(7) Omega cm(2). The former leads to the more effective anti-corrosion property.

• 出版日期2014-11-15
• 单位南京航空航天大学