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Influence of Growth Defects on the Corrosion Resistance of Sputter-Deposited TiAlN Hard Coatings
In this work, the causes of porosity of TiAlN hard coatings sputter deposited on D2 tool steel were studied since its corrosion resistance is mainly affected by imperfections within the coating (e.g., pinholes, pores, crevices). The corrosion test was performed in a chlorine solution using electrochemical impedance spectroscopy. The coating morphology of growth defects before and after the exposure was studied by scanning electron microscopy (SEM), while focused ion beam (FIB) was used to makedoi:10.3390/coatings9080511 fatcat:6p7vsbpo6ndjhggdwsfp2iurzu