Keynote speakers in plasma electrolysis and discharge deposition technology symposium
Aleksey Yerokhin,
The University of Manchester, UK
Email: Aleksey.Yerokhin@manchester.ac.uk
Presentation title: Recent Advances in Mechanistic Understanding of Plasma Electrolytic Oxidation Processes
Abstract：
Current trends towards sustainable, resource- and energy efficient manufacturing bring surface engineering of light alloys at the forefront of research interest. Plasma Electrolytic Oxidation (PEO) attracts significant attention as an advanced technology platform for high-performance ceramic coating of Al, Mg and Ti alloys, which offers numerous advantages in lightweighting of structural components, protection form wear and corrosion as well as development of new functional devices and consumer products. Advanced PEO coatings are formed under pulsed reversed polarisation conditions characterised by a large number of experimental variables, which provides significant challenges for process optimisation, diagnostics and control. We attempt to address these challenges by developing a mechanistic understanding of the behaviour of associated metal-oxide-electrolyte systems using original in-operando process diagnostic techniques. Resent results indicate that this behaviour is influenced by dynamic rearrangements in the barrier layer of the anodic oxide film growing under alternating cathodic and anodic polarisation. Although the barrier layer occupies a small portion of PEO coating located at the interface with the metal substrate, its evolution influences both structural and morphological transformations in the whole coating. This presentation will therefore discuss practical significance and implications of these findings for process energy efficiency and real-time control over coating characteristics and properties.
Resume
Dr. Aleksey Yerokhin has joined the Department of Materials at the University of Manchester in 2016. He has received his Master’s degree in Metallurgical Engineering in 1986 and PhD in 1995 from Tula State University in Russia. His previous academic employment included Universities of Sheffield and Hull in the UK and Tula State University (Russia), where he worked as Associate Professor at the Department of Physical-Chemical Processes and Technologies and led major electrochemical research laboratory. He has an extensive expertise in Surface Engineering, with main research interests covering various aspects of plasma-assisted electrolytic, atmospheric pressure and vacuum-based processes for surface treatment and coating of metals to ensure their sustainability and pave new processing routes for manufacturing of novel environmental materials and functional devices. He has been instrumental in establishing the European PEO network and acted on 20+ occasions as the Invited/Keynote Speaker at major scientific conferences. He has edited 5 special issues of ‘Surface and Coatings Technology’ (Elsevier) and 4 Annual Collections of Works.