Corrosion behaviour of 7075 aluminium alloy in acidic solution
Przemysław Kwolek
Abstract
per day. The mechanism of corrosion inhibition was studied using scanning electron microscopy, X-ray photoelectron spectroscopy, UV-Vis spectrophotometry and electrochemical impedance spectroscopy. It was revealed that heteropolyoxomolybdate species act as the corrosion inhibitor. They adsorb onto the surface and inhibit an anodic process. Their influence on a cathodic process is much weaker. Phosphomolybdenum blue species do not inhibit corrosion process and their formation is undesirable.
Topics & Concepts
CorrosionDielectric spectroscopyAqueous solutionSodium molybdateCathodic protectionMolybdateAdsorptionAluminiumAlloyElectrochemistryScanning electron microscopeChemistryMaterials scienceAluminium alloyInorganic chemistryNuclear chemistryMetallurgyElectrodeOrganic chemistryComposite materialPhysical chemistryCorrosion Behavior and InhibitionMetal Extraction and BioleachingAnodic Oxide Films and Nanostructures