Metal Matrix Composites: Corrosion

Abstract

Metal matrix composites (MMCs) are important materials usually designed for applications where the mechanical performances are the most important technical requirements. Nowadays, the applications of MMCs are not only limited to automotive and aerospace industries but also they are widespread into other industries. In this respect, it becomes important to take into account also the corrosion resistance behavior of MMCs, in relation to different factors, such as metal matrix composition and microstructure, particles composition, size, and dispersion, environments where MMCs are used. This article is a comprehensive literature review on the corrosion mechanisms and the methods used to prevent corrosion for the most important types of MMCs. In this article, different metal matrices are considered, by taking into account generally active ones (Mg), those with amphoteric characteristics (Al, Zn), noble metal matrices with film‐forming corrosion products (Cu), and those that form passivation layers affected by chlorides (steel, Ni), and finally metal matrices with stable passivity (Ti).

Advances in precision micro/nano-electroforming: a state-of-the-art review

“…Balathandan and Seshadri [221] stated that a Ni matrix with incorporated CeO 2 particles was more strongly resistant to oxidation than pure Ni coatings. Salvago and Bestetti [222] also illustrated that the co-deposition of nano-CeO 2 particles caused structural modifications of the Ni-Co coatings. Compared to microparticles, nanoparticles presented better results in terms of surface morphology and grain sizes, which had a positive effect on high-temperature resistance and oxidation resistance.…”