Circumventing challenges in developing CVD graphene on steels for extraordinary and durable corrosion resistance

Title : Circumventing challenges in developing CVD graphene on steels for extraordinary and durable corrosion resistance

Abstract:

Graphene has triggered unprecedented research excitement for its exceptional characteristics. The most relevant properties of graphene as corrosion resistance barrier are its remarkable chemical inertness, impermeability and toughness, i.e., the requirements of an ideal surface barrier coating for corrosion resistance.  However, the extent of corrosion resistance has been found to vary considerably in different studies. The author’s group has demonstrated an ultra-thin graphene coating to improve corrosion resistance of copper by two orders of magnitude in an aggressive chloride solution (i.e., similar to sea-water). In contrast, other reports suggest the graphene coating to actually enhance corrosion rate of copper, particularly during extended exposures.  Authors group has investigated the reasons for such contrast in corrosion resistance due to graphene coating as reported by different researchers.  On the basis of the findings, author’s group has succeeded in demonstration of durable corrosion resistance as result of development of suitable graphene coating. The presentation will also assess the challenges in developing corrosion resistant graphene coating on most common engineering alloys, such as mild steel, and presents results demonstrating circumvention of these challenges.

Biography:

Professor Raman Singh’s primary research interests are in the relationship of Nano/microstructure and Environment-assisted degradation and fracture of metallic and composite materials, and Nanotechnology for Advanced Mitigation of such Degradations. He has worked extensively on advanced materials (e.g., graphene) for corrosion mitigation, stress corrosion cracking, and corrosion-mitigation (including in the context of advanced civil engineering applications such as seawater sea sand concrete).   He is a senior professor at Monash University, Australia.  He is/was a Guest Professor at ETH Zurich, Switzerland (2020, 2023, 2024), US Naval Research Lab, Indian Institute of Science, and University of Connecticut. He worked as a scientist at Indian Atomic Energy and as a post-doc fellow at UNSW/Australia. Prof Singh’s professional distinctions and recognitions include: Guest Professor of ETH Zurich, Editor of a book on Cracking of Welds (CRC Press), Lead Editor of a book on Non-destructive Evaluation of Corrosion (Wiley), Editor-in-Chief of an Elsevier and two MDPI journals, leader/chairperson of a few international conferences and numerous plenary/keynote lectures at international conferences, over 285 peer-reviewed international journal publications and 15 book chapter, and several competitive research grants. He has supervised 60 PhD students.