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Improved Mechanical Performance and Green Corrosion Inhibition of Copper Matrix Composites Reinforced with Crassostrea Madrasensis via Powder Metallurgy and Allium sativum Extract
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Improved Mechanical Performance and Green Corrosion Inhibition of Copper Matrix Composites Reinforced with Crassostrea Madrasensis via Powder Metallurgy and Allium sativum Extract
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Journal Article
Improved Mechanical Performance and Green Corrosion Inhibition of Copper Matrix Composites Reinforced with Crassostrea Madrasensis via Powder Metallurgy and Allium sativum Extract
2025
Overview
This paper explores the structural, mechanical, thermal, and electrochemical properties of copper matrix composites (CMCs) enhanced by Crassostrea madrasensis seashell powder, which were produced via powder metallurgy and resistance sintering. FESEM images showed a uniform distribution of bio-ceramic particles in the copper matrix composites (CMCs), leading to an improved microstructure and enhanced mechanical behavior. Mechanical tests showed that after incorporating 12 wt.% seashell powder, the average hardness increased to 56 HV, and compressive strength improved to 686 MPa. Density analysis showed a decrease in porosity, which was attributed to better particle diffusion during sintering. The corrosion resistance was evaluated using electrochemical techniques, including OCPT, Tafel polarization, EIS, LSV, and chronocoulometry, which were employed in 3.5 wt.% NaCl media with varying concentrations of the extract of Allium sativum (garlic) as a green inhibitor. Garlic-derived phytochemicals facilitated surface passivation, which was proven by shifts in potential, reduced corrosion rates, and minor charge transfer. The findings confirm that Crassostrea madrasensis bio-ceramic reinforcements and garlic extract-based corrosion inhibition provide a sustainable method for improving the performance and durability of copper matrix composites.
