David Blessley Sekar, Narayanasamy Pandiarajan, Femiana Gapsari, Putu Hadi Setyarini, Balasundar Pandiarajan, Ramkumar Thulasiram
Magnesium alloys—particularly those of the AZ91D are widely known for having high specific strength and low density, but their significant corrosion propensity limits their application in essential sectors. Many studies have been done to increase the AZ91D alloy's resistance to corrosion, and it has already been shown that an electro-spun polymeric coating provides better protection. The protective barrier was then created by combining nano-SiO2 particles with polyetherimide (PEI) and entirely using their anti-corrosive qualities. While the polymer concentration and electrospinning procedure have been optimized previously in the literature, this work aims to improve corrosion protection by optimizing the nanoparticle content. Optical Microscopy (OM), Atomic force microscopy (AFM), combined with EDAX and scanning electron microscopy (SEM), were utilized to analyze the coating thickness, surface morphology and coating uniformity. Potentiodynamic polarization and corroded sample analysis assessed the coatings' efficacy. The findings showed that, if the right composition is obtained, nano-ceramic content significantly improves corrosion resistance for AZ91D, resulting in a denser and flawless coating. In light of this, this work may help researchers create more sophisticated, environmentally friendly corrosion protection systems for magnesium alloys, which companies looking for low-weight and corrosion-resistant materials. © 2025 Elsevier Ltd and Techna Group S.r.l.
Department of Mechanical Engineering, Francis Xavier Engineering College, Tamilnadu, Tirunelveli, India; Department of Mechanical Engineering, Kamaraj College of Engineering and Technology, Near Virudhunagar, Tamilnadu, Madurai, India; Department of Mechanical Engineering, Faculty of Engineering, Brawijaya University, MT Haryono 167 Malang 65145, Indonesia; Department of Mechatronics Engineering, Kamaraj College of Engineering and Technology, Near Virudhunagar, Tamil Nadu, Madurai, India; Department of Mechanical Engineering, Dr. Mahalingam College of Engineering and Technology, Tamil Nadu, Pollachi, India
