Sajjad Akbarzadeh , Rafael Emil Klumpp , Alexandre Mégret , Vedi Ölmez , Véronique Vitry , Marie-Georges Olivier
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引用次数: 0
Abstract
In consideration of the intrinsic porosity in layers generated via the plasma electrolytic oxidation (PEO) process, sol-gel coatings have gained a lot of attention for their environmentally friendly and robust protective qualities when applied as a post-treatment. The sealing capabilities of the sol-gel layer were scrutinized for the PEO coating applied on AA2024-T3 and AA2198-T851 aluminum alloys. Electrochemical Impedance Spectroscopy (EIS) and Field Emission Scanning Electron Microscopy (FE-SEM) confirmed that for the same operating conditions, the morphological properties of the PEO coating depend on the substrate nature and play a key role in the corrosion protection given by such duplex coatings. Furthermore, the findings indicated that the use of a sol-gel enhances the wear resistance compared to the blank substrates and the PEO coatings.
期刊介绍：
Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance:
A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting.
B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.
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