The electrochemical properties of corrosion products formed under sodium chloride deposits on zinc coatings alloyed with aluminium and magnesium have been studied using impedance spectroscopy (EIS), scanning Kelvin probe (SKP) photoluminescence (PL) techniques. low‐energy band gap identified in hot‐dip galvanized steel was associated their higher electric conductivity efficiency the rate‐controlling oxygen reduction reaction. It attributed to presence ZnO, zincite. formation ZnO hindered by...

This article investigates the modification of a carbon steel surface by benzotriazole (BTA), and structure properties formed layers. Adsorption was studied analytical methods such as X-ray photoelectron spectroscopy (XPS) reflecting infrared microscopy (FTIR). It has been established that polymer-like film containing iron-azole complexes are 2 nm thick strongly bonded to metal is on result azole interacting with surface. capable inhibit uniform localized corrosion in neutral aqueous...

The effect of carbon dioxide on the NaCl-induced atmospheric corrosion copper was studied using in situ Fourier transform infrared microspectroscopy, scanning Kelvin probe, and electron microscopy/energy-dispersive analysis by X-ray. surface contaminated with a single NaCl particle then exposed to relative humidity clean humidified air two concentrations ( 350 ppm). After formation an electrolyte droplet secondary spreading from peripherical parts observed. effect, which much larger at than...

The influence of mechanical stress on the electrochemical properties ferritic steel SAE 1008 and austenitic stainless 301LN was studied using Scanning Kelvin Probe Localized Electrochemical Impedance Spectroscopy (LEIS) techniques. probe-working electrode Volta potential difference mapped in situ under load. It found that elastic deformation small. Plastic decreased by 150–300 mV, whereas relaxation load from plastic domain increased potential. However, some locations, which can contain...

The interplay between mechanical stresses and electrochemical reactions may lead to stress corrosion cracking or hydrogen embrittlement for many materials. In this work, the effect of tensile on properties AISI 304 stainless steel was studied using scanning Kelvin probe (SKP) in air microscopy (SECM) an aqueous 0.5 M Na2SO4 electrolyte. measurements were performed under load- load-free conditions. No influence elastic potential found. contrast, plastic strain induces dislocations dislocation...

Fourier transform infrared microspectroscopy has been used to provide a better understanding of filiform corrosion processes on coated aluminum alloys. Results from scanning Kelvin probe microanalysis are also presented. The investigations were performed untreated or chromium-free pretreated AA6016 covered with an organic coating. An active head Volta potential approximately 400 mV lower than that the tail filament was identified. filled partially hydrolyzed chloride solution, containing...

The adsorption of different ethoxysilanes on Al was studied. It established that during polymolecular from the vapor phase aluminum first monolayer is adsorbed irreversibly with van der Waals bonds between silane molecules and surface. covalent bonding silanes surface (Al‐O‐Si bonds) occurs in presence water a decreases surface, inhibits hydration oxide metal film. formation negatively charged siloxane film local corrosion, positively layer activates it chloride containing media. polymer by...

The aim of the present work was to study influence stress on electrode potential austenitic stainless steel 301LN using Scanning Kelvin Probe (SKP). It found that elastic deformation reversibly ennobles whereas plastic decreases in both tensile and compressive mode this decrease is retained even 24 h after removal load. To interpret effects, different surface preparations were used composition thickness passive film determined by GDOES. Slip steps formed due observed AFM. effect strain...

Industrial coatings are composed of layers different polymers (top coats, primers) containing pigments, corrosion inhibitors, and fillers as well additives. For protection, it is vitally important to preserve the strong adhesion long-term stability metal-polymer interface in corrosive environments. In recent decades, performance painted materials increased, which requires application advanced methods for quick assessing, ranking predicting stability. Scanning Kelvin probe (SKP) a highly...

The kinetics of vanadate release from an organic coating and the stability protective ability newly formed vanadate-based films on zinc surfaces have been studied with respect to self-healing vanadate-pigmented coatings. results were compared those obtained chromate. a polyester was comparable that methods X-ray absorption near edge spectroscopy (XANES) scanning Kelvin probe used for studying mechanism inhibition reduction bare zinc. XANES proved be powerful tool determination oxidation...