The presented work was mainly aimed at assessing the tribological properties of gas nitrided samples subsequently subjected to shot peening. This assessment was carried out using the standard "three rollers - cone" method. In these tests, different materials of roller samples were used, i.e. both structural and tool steels. In addition, the selected material of conical counter-samples, i.e. heat-treated medium carbon steel, was used. The obtained test results allowed us to assess the influence of the use of dissimilar material of nitrided (under different conditions) roller samples, as well as their surface plastic processing, i.e. shot peening.
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