Coatings are often used to protect metals from corrosion and to extend their working life. Electrical engineers are concerned with corrosion affecting electrical contacts. In other words, corrosion is the wearing away of metals due to a chemical reaction. Corrosion and its effect can lead to critical failures in construction, industry and transport if not prevented or treated timely and properly.Rust convertor LR-3 is a multi-component mixture in a liquid phase - the latter consists of inorganic salts, organic matter (the innovative solution) and a negligible amount of water. The active ingredients for the conversion of rust are the inorganic salts having an adsorption-oxidation effect, and the complex-forming agents.