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Khalid H. Rashid,Anees A. Khadom,Hameed B. Mahood 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.10
The behavior of anodic porous alumina film formed on an aluminum surface by anodizing in chromic acid solutions wasoptimized using Box–Wilson experimental design. The film thickness was correlated as a function of temperature, acidconcentration, applied voltage, and time. A mathematical model was suggested and optimized. Results of coating thicknessindicate that both temperature and time play an important role in the anodizing process. The interaction effect of variableson the film thickness is less pronounced compared with the effect of the main variables. Optimum film thickness obtainedduring the anodizing process was 10.43 μm at the optimum value of temperature (45 °C) and time (68 min). The polarizationmeasurement of anodized aluminum ASA 6061 in chromic acid shows a high corrosion resistance in the presence ofcoating. The results confirmed by using surface morphology investigations.