瑞典卡尔斯塔德大学JAYARAJ JAYAMANI副教授：Wet Corrosion Behavior of Conventional and Advanced Alloys

Corrosion is a key factor limiting the performance and lifetime of metallic materials in demanding environments. This lecture will provide an overview of corrosion fundamentals, including electrochemical principles, passive film formation, and the influence of environmental factors. Conventional corrosion-resistant alloys, particularly titanium and zirconium, will be discussed, highlighting their passive film behavior, typical mechanisms, and limitations. The lecture will also explore advanced alloys, including metallic glasses, high-entropy alloys, and additively manufactured Ti alloys, whose unique structures and microstructures offer enhanced corrosion resistance. The role of microstructure, composition, and processing will be emphasized in controlling corrosion performance. Advanced electrochemical techniques—such as potentiodynamic polarization and electrochemical impedance spectroscopy, Mott-Schottky analysis, along with surface characterization methods—will be presented to link structural features with corrosion behavior. This talk aims to provide a concise yet comprehensive perspective on designing alloys for improved durability. JAYARAJ JAYAMANI, He currently serves as an Associate Professor in the Department of Mechanical and Materials Engineering at Karlstad University, Sweden. His research focuses on corrosion, tribo-corrosion, wear, and the mechanical behavior of metallic and composite materials produced through additive manufacturing and conventional processing techniques. A central theme of his work is understanding how microstructural features govern material performance, particularly in demanding environments, which has led to the successful acquisition of several competitive research grants. Over the years, he has built a research portfolio, authoring 46 journal publications, 5 conference papers, 3 patents, and 2 book chapters. His research has been recognized through several prestigious fellowships and awards. He is a Humboldt Fellow of the Alexander von Humboldt Foundation, Germany, and a JSPS Postdoctoral Fellow of the Japan Society for the Promotion of Science. He has also been awarded the Dr. K. S. Krishnan Research Associateship by the Board of Nuclear Research Society, India. In recognition of his significant contributions to corrosion science and education, he received the “Corrosion Awareness Award 2015 for Distinction in Corrosion Science & Technology in Research & Education” from the NACE International Gateway India Section.