Glow discharge plasma nitriding of low alloy steel
Article dans une revue avec comité de lecture
Present study concerns with the effect of plasma nitriding on hardness of low alloy steel. Plasma nitriding had been performed at elevated temperature of 500 C which improved the hardness to 1200 Hv. The case depth was found to be 80 mm. With the variation of time the case depth also varied. The plot of the square of the case depth vs. nitriding time and the corresponding line drawn by a linear regression and extrapolation passes almost through the origin. From the plot the nitrogen diffusion co-efficient calculated to be 2.23 10 13 m2/s. The structural and morphological studies have been made by following the X-ray diffraction (XRD) and scanning electron microscopic (SEM) and EDS analyses. XRD revealed the presence of a-Fe, c0 and e phases.
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Electrochemical study on the corrosion resistance of surface modified Cr-Mo-V steel by elevated temperature plasma nitriding Article dans une revue avec comité de lectureTRINADH, Kalimi; NOUVEAU, Corinne; KHANNA, Anand Sawroop; ANEJA, Karanveer S; RAO, K Ram Mohan (IOP Publishing Ltd, 2019)This study presents the effect of plasma nitriding on corrosion resistance of low alloy 90CrMoV8 steel. At a selected temperature of 500 °C, nitriding was performed by varying the exposure time. X-ray diffraction of nitrided ...
Article dans une revue avec comité de lectureRAM MOHAN RAO, K.; NOUVEAU, Corinne; KHANNA, A.S.; ANEJA, Karanveer S.; TRINADH, Kalimi (Elsevier, 2020)In the present studies, efforts were made to improve corrosion resistance of 90CrMoV8 tool steel by following plasma nitriding. Plasma nitriding of this steel at 500 oC for6and 8 h significantly improved the corrosion ...
Article dans une revue avec comité de lectureRAO, K. Ram Mohan; NOUVEAU, Corinne; TRINADH, Kalimi (2020)This study presents the plasma nitriding of Cr–Mo–V tool steel to protect it from environmental degradation. The steel samples after metallographic polishing were nitrided in the glow discharge plasma of N2 and H2 gas ...
Article dans une revue avec comité de lectureRAO, K. Ram Mohan; TRINADH, Kalimi; NOUVEAU, Corinne (Elsevier, 2019)Surface modification of tool steel had been performed by utilizing plasma nitriding at elevated temperature by varying the exposure time. The nitrided steel had shown significantly enhanced corrosion resistance properties. ...
Article dans une revue avec comité de lectureRAM MOHAN RAO, K.; NOUVEAU, Corinne; TRINADH, Kalimi (Elsevier, 2019)The present concerns surface modification of low alloy CrMoV steel by following the route of plasma nitriding for the improvement of hardness. Plasma nitriding was performed at a low temperature of 450 oC. The maximum ...