09 Sep UNIMORE – PROTERMGROUP – Influence of surface finishing on the effectiveness of nitriding, nitrocarburizing, and post-oxidation
The study conducted by the University of Modena and Reggio Emilia, in collaboration with the Proterm Group, examined the influence of surface finishing on the properties of steels treated with nitriding, nitrocarburizing, and post-oxidation. The researchers used a series of experimental methods to analyze 42CrMo4 steel treated with four different surface finishes: lapping, grinding, turning, and shot peening.
The results show that all treatments significantly improve the wear resistance of the steel, with the best performance recorded in the nitrided samples with a lapped finish. Additionally, it was found that corrosion resistance improves with each treatment, with particularly positive effects from post-nitrocarburizing oxidation, especially in the lapped samples, which displayed the lowest corrosion currents.
This study not only enhances the understanding of the effects of different surface finishes on thermochemical treatments but also provides valuable data for industry professionals to select the most suitable treatment based on specific wear and corrosion resistance requirements.