Comparative analysis of wear resistance of thermodiffusion coatings obtained using the HFC melting method

Federal Scientific Agroengineering Centre “VIM”, Moscow, Russia

^* Corresponding author: dozor.06@mail.ru

Abstract

When using HFC welding, an important problem is the selection of a suitable surfacing material. The main criterion for this selection is the wear resistance of the resulting coating. The higher the wear resistance, the longer the working element will last. To achieve good wear resistance, higher hardness materials are often used for surfacing. However, it is important to find a balance so that the hardness of the coating does not increase to the point where it becomes brittle. Among the coatings studied, coatings that contain boron carbide and are additionally mixed with P-0.66 powders in 10% volume and FeSi in 90% volume have the highest wear resistance. These coatings proved themselves by showing wear rates that are 18 times less than those of 65G steel in the tests. However, despite their outstanding hardness, they are very brittle and are impractical for practical applications. However, coatings consisting of boron carbide mixed with P-0.66 powders in 10% volume and FeSi in 50% volume also have excellent wear resistance. Compared to 65G steel, they have 4 times less wear, are not as brittle and can be used for hardening coatings.