Cold Spray Coating of Nano Crystallization Material, Method, Properties and Challenges: A Critical Review

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In the 1980s, a deposition technique known as cold spray solid-state coating was created. Cold spray technology, unlike conventional thermal spray techniques, can maintain the natural properties of the feedstock, prevent damage to the constituent elements of the substrate and create extremely solid coatings. Nanostructured coatings have the potential to significantly enhance their properties compared to conventional, non-nanostructured coatings. Furthermore, surface coating on metal substrates is a very difficult challenge for the researcher due to the contradictory requirements for various properties. The ability of cold spray to form coatings with nanostructures has also been demonstrated to a great extent. This work aims to provide an in-depth analysis of nanostructured cold-sprayed metal coatings. First, a description of the cold spray technique is given. Next, the issue of Nano crystallization in standard metal coatings is discussed. Then, microstructures and properties of nanomaterial-reinforced metal matrix composite (MMC) coatings and cold-sprayed nanocrystalline metal coatings are discussed. In conclusion, a summary and future prospects for cold spray technology are given. To conclude, the process of developing nanostructured metal coatings has been completed.