L Torchane
University of Tebessa, Algeria
Title: Control of layers growth kinetics in Fe-N, Fe-N-Cr and Fe-N-Cr-C systems: Application to nitriding of steel 32CrMoV13
Biography
Biography: L Torchane
Abstract
In this work, our task is in optimizing the nitriding treatment at low-temperature of steel 32CrMoV13 by way of mixing ammonia gas, nitrogen and hydrogen to improve the mechanical properties of the surface (good wear resistance, friction and corrosion) and of the diffusion layer of the nitrogen (good resistance to fatigue and good tenacity with heart). By limiting our work to pure iron and to alloys iron-chromium and iron-chromium-carbon, we have studied the various parameters which manage the nitriding such as flow rate and composition of the gaseous phase, the interaction of chromium-nitrogen and chromium-carbon with the help of experiments in the laboratory by thermogravimetry. The acquired knowledge has been applied by mastery of the growth of ï§' combination layer on ï¡ï€ diffusion layer in the case of industrial steel 32CrMoV13.