Plasma Nitriding of CrMoV Steel for the Enhancement of Hardness and Corrosion Resistance
Article dans une revue avec comité de lecture
In the plasma ionic environment of nitrogen and hydrogen at 4:1 ratio, nitriding had been realized in the plasma laboratory. Nitriding of steel samples was followed at the lower temperature of 450 C and also at the higher temperature of 550 C while the sample was biased at the fixed - 250 V. Steel nitrided at 550 C had shown a significantly enhanced resistance to corrosion in comparison to that of steel nitrided at 450 C. X-ray diffraction studies of nitrided steels had shown the presence of nitrides of iron (FexN). Scanning electron microscopic and the electron dispersive spectroscopic analyses (SEM ? EDS) of the cross section of the nitrided steels had shown the nitrided layer and the elemental distribution from top to the core. Following structural analysis, microhardness and the potentiodynamic polarization tests were performed. A significant improvement in hardness (* 1180 Hv) and the case depth * 150 lm was obtained after nitriding at the higher temperature. Corrosion resistance was also found to be significantly improved. These achievements might be attributed to the presence of FexN, CrN phases and also to the nitrogen solid solution.
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Elevated Temperature Plasma Nitriding of CrMoV Tool Steel for the Enhancement of Hardness and Wear Resistance Article dans une revue avec comité de lectureKIRAN, P. Janardhana; SRINIVAS, V.; BASU, A.; NOUVEAU, Corinne; RAO, K. Ram Mohan (Springer Science and Business Media LLC, 2023-01-26)Elevated temperature plasma nitriding of Cr-Mo-V based tool steel was performed by varying the treatment time to enhance hardness and wear resistance. Steel samples after metallographic polishing were placed on the conducting ...
Article dans une revue avec comité de lecturePresent 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 ...
Article dans une revue avec comité de lectureIn this study the effects on resistance to corrosion of a low alloy steel after plasma nitriding has been reported. Nitriding was performed at a low temperature of 450 °C and also at 520 °C for the same duration of 10 h ...
Article dans une revue avec comité de lectureThis 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 lectureThis study concerns plasma nitriding of tool steel at different temperatures and its effects on corrosion resistance. Inside the nitriding reactor steel samples were placed on the sample holder after metallographic polishing ...