Surface Improvement of Low Carbon Steels (St37) by Duplex Treatments

The aim of this work was seen to effect to duplex treatment on steel surface. Firstly, arc spray and secondly pulse plasma treatment were applied to sample surface. The influence of these duplex process and process parameters want to see on surface. Swm Inox 446-TW wire was used in arc spray process. Then the pulse plasma process was applied to surface. The different distances and number of pulse were used as the pulse plasma treatment. After duplex treatments, the samples were characterized by using OM (optical micrograph), scanning electron microscopy (SEM-EDS). X-ray diffractometer (XRD) analyses and microhardness tests were applied. The surface roughness of samples was measured with 3D-roughness device. The microhardness values of treated surfaces are about four times higher than that of un-treated surfaces. After duplex treatments, the improved performance of surface the St 37 steel was presented.Key words: surface, steel, duplex treatment, arc, pulse plasma

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