Corrosion of metals is a broad-based issue that has significant economic and ecological consequences. It is a surface treatment method that is popularized for its promising results in inhibiting corrosion and increasing the life span of metal components. The review paper provides an in-depth analysis of the phosphatization process, its mechanisms, and the resistance properties offered by coated metals. After thorough investigations, the impact on various metals, including steel, aluminum, and zinc of phosphating has been explored. The study further explored the influence of key factors such as composition, pH, temperature, and immersion time of the metal in chemical acid. Additionally, the paper also examines the interaction between the metal surface and the chemical solution of phosphoric acid in which it has been immersed which leads to the formation of a phosphate layer over the surface. The paper also discusses the effectiveness of different phosphate types such as zinc, iron, and manganese phosphates in providing corrosion resistance. Further the paper analyses the role of phosphate coatings in altering the surface properties, including adhesion, wettability, and microstructure, to enhance the metal’s resistance to corrosive environments. Finally, this review summarizes the current challenges and future directions in phosphatization research. The findings of this research contribute to the development of efficient corrosion protection strategies, fostering advancements in the field of chemistry.

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