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Glow discharge plasma nitriding of low alloy steel

Article dans une revue avec comité de lecture
Author
RAM MOHAN RAO, K.
1059292 GITAM Institute of Science - Department of Chemistry
TRINADH, Kalimi
1059292 GITAM Institute of Science - Department of Chemistry
NOUVEAU, C.
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]

URI
http://hdl.handle.net/10985/19692
DOI
10.1016/j.matpr.2019.08.224
Date
2019
Journal
Materials Today: Proceedings

Abstract

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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