Anodic oxidation behaviour of aluminium in propylene carbonate

The anodic oxidation behaviour of pure aluminium (Al) in propylene carbonat e was investigated using electrochemical measurements, microscopic observat ions, elemental and gravimetric analyses. The formation and growth of the o xide were observed on the surface of Al in the early stage of anodizing. Fu rther anodic oxidation led to the breakdown of a part of the oxide film, re sulting in simultaneous pitting corrosion because of the limitation of mass transfer in the oxide layer. (C) 2000 Elsevier Science S.A. All rights res erved.