Anodic Oxidation of Carbon Steel at High Current Densities and Investigation of Its Corrosion Behavior

作者：Fattah Alhosseini Arash; Khan Hamid Yazdani^*

来源：Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 2017, 48(3): 1659-1666.

DOI：10.1007/s11663-017-0943-7

This work aims at studying the influence of high current densities on the anodization of carbon steel. Anodic protective coatings were prepared on carbon steel at current densities of 100, 125, and 150 A/dm(2) followed by a final heat treatment. Coatings microstructures and morphologies were analyzed using X-ray diffraction (XRD) and scanning electron microscope (SEM). The corrosion resistance of the uncoated carbon steel substrate and the anodic coatings were evaluated in 3.5 wt pct NaCl solution through electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements. The results showed that the anodic oxide coatings which were prepared at higher current densities had thicker coatings as a result of a higher anodic forming voltage. Therefore, the anodized coatings showed better anti-corrosion properties compared to those obtained at lower current densities and the base metal.

• 出版日期2017-6