Ouafa Hamidane, BrahimChermime and MamounFellah2024-02-132024-02-132022-04-30http://dspace.univ-khenchela.dz:4000/handle/123456789/754The paper present a review of investigations on the tree types of nitriding, salt bath nitriding, gas nitriding and ionic nitriding on a stainless steel samples. In this study we will see the properties of each sample after each nitriding type, taking the principal parameters (the tomperature and holding time).