The Department of Mechanical Engineering proudly congratulates G Chandra Mouli, PhD scholar for receiving the Best Oral Paper Presentation Award at the International Conference on Advances in Materials, Ceramics & Engineering Sciences (AMCES – 2023) organised by Dayananda Sagar University, Bangalore, held during March 13-15, 2023. The paper titled “A New Approach to Enhance Microhardness and Corrosion Resistance with In-Situ Shot-Peened Al – Zn Coatings on ZK60 Magnesium Alloy by Cold Spray” was awarded the first prize among the 200+ papers presented at the conclave.
Congratulations to G Chandra Mouli and his mentor, Prof, GS Vinodkumar, Professor, Department of Mechanical Engineering for their cutting-edge research in enhancing the thickness, microhardness and corrosion resistance of metals!
Abstract
This paper aims to develop an improved microhardness and corrosion protective coating (Pure Al-Zn, Al-Zn-Al2O3 and Shot peened Al-Zn) on an Mg alloy substrate, by using the cold spray (CS) technique. A mixture of metal, ceramic/hard particles (Al2O3) and Shot-peened (Large Ni particles) has been used to improve the feedstock powder flowability and coating deposition efficiency. The long-term corrosion properties are evaluated by immersing these coupons in NaCl solution as a function of immersion time durations. The coatings are well-characterised for their structural, morphological, mechanical and electrochemical properties. Thus, it has been observed that in-situ-shot peening helps to enhance the thickness, microhardness and corrosion resistance.