Influence of Growth Defects on the Corrosion Resistance of Sputter-Deposited TiAlN Hard Coatings
Source abstract
Abstract
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 make series of cross-sections through individual selected defects. We confirm that pitting corrosion is closely related to the through-thickness growth defects. It was also found that in the case of nodular defects, the intensity of corrosion depends on the shape of the seed.
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Research context
OpenAlex topics: Metal and Thin Film Mechanics · Ion-surface interactions and analysis · GaN-based semiconductor devices and materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Thin Films and Surfaces, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
Interkorn d.o.o., Gančani 94, SI-9231 Beltinci, Slovenia
Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia
Funding
Slovenian Research Agency · European Regional Development Funds
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