STUDY OF TRANSPARENT NANOCOATINGS FOR APPLICATION ON METALLURGICAL PRODUCTION MATERIALS

It has been demonstrated in the area of surface treatment that the protective coating systems constitute at least 85% of worldwide production for corrosion protection. They are therefore an indispensable part of surface finishes and great emphasis is placed on their quality. The choice of the protective coating system depends primarily on the expected or planned service life of the corrosion protection provided by the barrier method, limiting the access of water and aggressive components from the surrounding environment to the substrate material. Development in the area of the quality of coating systems leads to continuous improvements. It focuses primarily on improving the corrosion protection efficiency, reducing the functional coating thickness, reducing total production costs and on decreasing environmental impact. This contribution focuses on the short-term corrosion protection of steel production materials such as pipes. As required by the manufacturer, the conservation of steel pipes is to protect the steel surface for a period of 3 to 6 months with regard to the corrosive environment and the degree of aggressiveness of the corrosive environment C5. The experiments were performed using two types of substrate materials - rolled pipe and samples of standard metal plate. Standard samples were delivered with a defined surface finish and roughness used for laboratory testing in the development of coating systems. Samples of rolled pipes were after rolling, without surface finish and were scaled. Two transparent nanocoatings were applied on these substrates by pneumatic spraying.