Burcak Avci

Istanbul Technical University · Department of Metallurgical and Materials Engineering

The inherent defective morphology of the physical vapor deposition (PVD) hard coatings limits their corrosion protective ability. We examined the impact of nitride-based PVD coatings, including TiN, TiAlN, and CrN deposited on inert substrates by cathodic arc PVD method (CA-PVD), on the galvanic corrosion of carbon steel. Their contribution was eva...

We investigated the unique passive behaviour of Hybrid steel in de-aerated sulfuric acid and aqueous sodium chloride solutions through corrosion tests, surface analysis, and thermochemical modelling. Electrochemical measurements confirmed that Hybrid steel possesses stainless steel characteristics, including passivity, breakdown, and pitting, akin...

This study has been conducted for investigating the contribution of polyaniline (PANI) to the electroactivity of nickel hydroxide (NH) by using a combination of electrochemical, structural and morphological characterization techniques. NH, PANI and nickel hydroxide/PANI composite (NHP) electrodes were produced on nickel foam substrates. Electrodepo...

In this study, we used a specially designed aluminum anodic oxide (AAO) template technique to produce interconnected self‐standing tin nanowire electrocatalysts having a high surface‐to‐volume ratio for CO 2 reduction toward formate. These electrodes consisted of interconnected tin nanowires with 150 nm diameter and 7 μm length supported on 70–100...

We examined the unusual passive character of Hybrid steel in de-aerated sulfuric acid and aqueous sodium chloride solutions by benchmark corrosion and surface analytical tests in combination with CalPhaD-based thermochemical modelling. The electrochemical potentiodynamic polarization measurements have shown that Hybrid steel possesses all character...

Hard ceramic coatings such as TiN, CrN and TiAlN can be produced on various metallic substrates by physical vapor deposition (PVD) techniques. Metallic substrate and ceramic coating systems are commonly used to improve cutting, working and drilling tools. With PVD methods, wear, corrosion and tribo-corrosion behavior of substrates are improved. How...

The proposed corrosion mechanism of the PVD hard ceramic coatings is the penetration of the electrolyte through the inherent defects on the coatings such as pinholes, pores, voids, MPs in the case of CA-PVD technique, etc. and the consecutive formation of a galvanic cell between the coating and the substrate. However, the literature pertaining this...