Tribological and Corrosion Behavior of St37 Steel by Electrochemically Deposited Ni-Fe/Al 2 O 3 Coating

Abstract

Abstract Surface coating process is one of the techniques that increase the performance and service life of parts by increasing the mechanical properties. In this study, compared to the layered coating, a composite coating was done by electroplating method on stainless steel grade st37. The aim of this study was to increase the mechanical properties of the surface base metal as well as the coating. Materials characterization tests such as X-ray diffraction tests and imaging were performed by scanning electron microscopy. In addition, a Vickers microhardness test and wear resistance were performed. Chemical tests were done on the created coating, the results of which were presented as polarization and Varna quest diagrams. According to the results, the coating containing Ni-Fe/Al2O3 particles showed better mechanical properties so that by increasing the amount of alumina particles to 50 g/L, the hardness reached 750 (HV 0.5), which is 585 (HV 0.5) for the coating without alumina was reported. Varna quest chemical test reported that coat with alumina corroded 10 times less than st37 row material. The wear friction coefficient for row st37 was 0.21 however this amount after adding alumina to the coating structure reached 0.35.