Plasma Nitriding of CrMoV Steel for the Enhancement of Hardness and Corrosion Resistance
Article dans une revue avec comité de lecture
Date
2021Journal
Transactions of the Indian Institute of MetalsRésumé
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 (around 1180 Hv) and the case depth around 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.
Fichier(s) constituant cette publication
- Nom:
- LABOMAP_TIIM_2022_NOUVEAU.pdf
- Taille:
- 1.186Mo
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- Description:
- Article
- Fin d'embargo:
- 2022-04-12
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Documents liés
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Article dans une revue avec comité de lectureNOUVEAU, Corinne; STEYER, Philippe; MOHAN RAO, Kumar Ram; LAGADRILLERE, Denis (Elsevier, 2011)The aim of the study is to apply a plasma nitriding process to the 90CrMoV8 steel commonly employed in wood machining, and to determine its efficiency to improve both mechanical and electrochemical properties of the surface. ...
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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 ...
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