Comprehensive corrosion evaluation of sintered Al/Ni-SiC composite by CuL2 nanocomplex as a green inhibitor in 1M HCl solution

Abstract

The corrosion performance of Al/Ni-SiC composites prepared by powder technology using both vacuum and hot compaction techniques for the sintering process is explored, highlighting the importance of their electrochemical and chemical properties. The research also examines the corrosive effects on aluminum metal matrix composites (AMMCs) and other solid wastes. Although AMMCs demonstrate strong mechanical and tribological properties, their corrosion resistance remains a challenge. The CuL2 nanocomplex (green nanocomplex) is prepared in a simple, rapid, and eco-friendly manner using coriandrum sativum extract in ethanol, which is employed to enhance the corrosion resistance of Al/Ni-SiC composites. Additionally, the corrosion behavior of Al/Ni-SiC composites with the CuL2 nanocomplex has been theoretically investigated using density functional theory. The investigation demonstrated that the samples with the lowest corrosion rate (CR) values were consolidated using hot compaction and vacuum mixing. The CR decreased with increasing concentrations (5%, 10%, and 15%) of nickel-coated SiC particles by weight. Specifically, the nickel-coated SiC particles in the hot compaction mix and vacuum mix at 15% in 1M HCl exhibited CR values of 1.17 mm/y and 0.39 mm/y, respectively.