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Effects of plasma nitriding on low alloy Cr-Mo-V steel

Type
Articles dans des revues avec comité de lecture
Auteur
TRINADH, Kalimi
1059292 GITAM Institute of Science - Department of Chemistry
NOUVEAU, Corinne
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
RAO, K. Ram Mohan
11165 Department of Chemistry
1059292 GITAM Institute of Science - Department of Chemistry

URI
http://hdl.handle.net/10985/20098
DOI
10.1016/j.matpr.2020.03.720
Date
2021
Journal
Materials Today: Proceedings

Résumé

In 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 in the plasma of nitrogen and hydrogen (80:20) gas mixture. Sample holder was biased at -250 V and the working pressure was kept at around 500 Pa. After nitriding the steel samples along with the bare steel were exposed to X-ray diffraction (XRD) to understand the phase formation. For the assessment of corrosion resistance properties potentiodynamic polarization tests of the bare and plasma nitrided steels in 3.5% NaCl electrolyte were performed. Nitriding at 520 °C had shown the best corrosion resistance. However, broad passivation region had been shown after nitriding at 450 °C.

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Documents liés

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  • Low Temperature Plasma Nitriding of Low Alloy Steel for the Enhancement of Hardness 
    RAM MOHAN RAO, K.; NOUVEAU, Corinne; TRINADH, Kalimi (Elsevier BV, 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 ...
  • Plasma Nitriding of 90CrMoV8 Tool Steel for the Enhancement of Corrosion Resistance 
    RAM MOHAN RAO, K.; NOUVEAU, Corinne; KHANNA, A.S.; ANEJA, Karanveer S.; TRINADH, Kalimi (Elsevier BV, 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 ...
  • Electrochemical study on the corrosion resistance of surface modified Cr-Mo-V steel by elevated temperature plasma nitriding 
    TRINADH, Kalimi; NOUVEAU, Corinne; KHANNA, Anand Sawroop; ANEJA, Karanveer S; RAO, K Ram Mohan (IOP Publishing, 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 ...
  • Low-temperature plasma nitriding of martensitic stainless steel 
    RAO, K. Ram Mohan; NOUVEAU, Corinne; TRINADH, Kalimi (Springer, 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 ...
  • Elevated temperature plasma nitriding and effects on electrochemical properties of steel 
    RAO, K. Ram Mohan; TRINADH, Kalimi; NOUVEAU, Corinne (Elsevier BV, 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. ...

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