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Anodic alumina membranes prepared by electrochemical anodic oxidation in different electrolytes . Voltage - time ( VT ) curve, scanning electron microscopy , energy dispersive X-ray spectrum using the anodic oxidation method to characterize the surface morphology of the oxide film formation process and the oxide film , porous anodic aluminum oxide (PAA) Growth the new model . Firstly, starting from the formation process of the study barriers alumina discussed Barrier type alumina is formed in a different electrolyte , anodic oxidation VT curve common characteristics and the different pressure on the oxygen precipitation , then barriers alumina the flash fire and breakdown mechanism; different amount of phosphoric acid was added to the barriers type alumina is formed on the electrolyte and found that with the phosphate content increases , the barriers type alumina is gradually transformed into the PAA, whereby the oxide film in the mixed electrolyte void formation process was analyzed ; acid, phosphoric acid concentration of the electrolyte affect the morphology of the PAA , PAA formation electrolyte (phosphoric acid) , pore forming , and also verify the presence of a contaminated layer ; through adding reducing agent to absorb oxygen , to verify oxygen bubbles pore shape , PAA growth of new models and the formation mechanism , a new interpretation and the traditional anodizing curve .
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