Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2698
Title: Structural and magnetic characterization of plasma ion nitrided layer on 316L stainless steel alloy
Authors: Öztürk, Orhan
Okur, Salih
Riviere, Jean Paul
Keywords: Magnetic force microscopy
Plasma nitriding
Stainless steel
VSM
XRD
Issue Date: May-2009
Publisher: Elsevier Ltd.
Source: Öztürk, O., Okur, S., and Riviere, J.P. (2009). Structural and magnetic characterization of plasma ion nitrided layer on 316L stainless steel alloy. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 267(8-9), 1540-1545. doi:10.1016/j.nimb.2009.01.076
Abstract: In this study, an FeCrNi alloy (316L stainless steel disc) was nitrided in a low-pressure R.F. plasma at 430 °C for 72 min under a gas mixture of 60% N2-40% H2. Structural, compositional and magnetic properties of the plasma nitrided layer was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and magnetic force microscopy (MFM). The magnetic behaviour of the nitrided layer was also investigated with a vibrating sample magnetometer (VSM). Combined X-ray diffraction, cross-sectional SEM, AFM and MFM, as well as VSM analyses provide strong evidence for the formation of the γN phase, [γN-(Fe, Cr, Ni)], with mainly ferromagnetic characteristics. The uniform nature of the γN layer is clearly demonstrated by the XRD, cross-sectional SEM and AFM analyses. Based on the AFM and SEM data, the thickness of the γN layer is found to be ∼6 μm. According to the MFM and VSM analyses, ferromagnetism in the γN layer is revealed by the observation of stripe domain structures and the hysteresis loops. The cross-sectional MFM results demonstrate the ferromagnetic γN phase distributed across the plasma nitrided layer. The MFM images show variation in the size and form of the magnetic domains from one grain to another.
URI: http://dx.doi.org/10.1016/j.nimb.2009.01.076
http://hdl.handle.net/11147/2698
ISSN: 0168-583X
0168-583X
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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