Various chemical and natural substances have been employed to control corrosion in historical metal artifacts. However, the use of these substances has not always been effective and has occasionally led to secondary issues. This article reviews the existing challenges associated with corrosion inhibitors and investigates factors influencing the selection of materials to optimize corrosion control conditions. Based on available data, a multifunctional derivative of phosphonic acid with active phosphorus and nitrogen centers was selected. Its effectiveness in controlling corrosion of iron artifacts was evaluated through electrochemical impedance and polarization measurements, as well as microscopic methods. The results demonstrate the material’s ability to reduce corrosion rates at very low concentrations with minimal impact on the artifacts’ appearance, marking a significant step toward their preservation. Furthermore, the potential for optimizing corrosion control conditions through the use of complementary materials alongside phosphonic acid derivatives, leveraging their synergistic effects, is discussed.
