High current density nitrogen implantation of an austenitic stainless steel

Rivière, J.P.; Meheust, P; Villain, Jacques; Templier, C.; Cahoreau, M.; Abrasonis, G.; Pranevičius, L.

doi:10.1016/s0257-8972(02)00227-x

Cited by 59 publications

(24 citation statements)

References 20 publications

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“…at moderate substrate temperatures of about 400°C leads to a metastable, high N content phase, γ N , in the surface treated layers [1][2][3][4][5][6][7][8]. High strength (hardness values as high as 20 GPa), enhanced wear resistance under high loads, and enhanced corrosion resistance compared to underlying stainless steel substrate are a few important technological characteristics associated with the γ N phase (also known as the expanded austenite phase) [3].…”

Section: Introductionmentioning

confidence: 99%

Magnetic layer formation on plasma nitrided CoCrMo alloy

Öztürk¹,

Okur²,

Pichon³

et al. 2011

Surface and Coatings Technology

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Section: Introductionmentioning

confidence: 99%

Magnetic layer formation on plasma nitrided CoCrMo alloy

Öztürk¹,

Okur²,

Pichon³

et al. 2011

Surface and Coatings Technology

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“…It is obvious that for the specimens nitrided at 400-600 °C, the concentration of nitrogen When the nitriding temperature is 600 °C, a step-like distribution of nitrogen was observed. This step-like distribution was also observed in the surface modified layer of AISI 316L stainless steel plates [27,28]. In another study on plasma-sprayed AISI 316L coating [29], this step-like distribution was not found.…”

Section: Microstructurementioning

confidence: 79%

“…There is no oxide in the gas-nitriding modified layers of this studied steel sheet. Hence, the modified layer formed in a similar way to that of AISI 316L stainless steel plate at the nitriding temperature of 600 °C [27,28], such that chromium atoms bound to nitrogen in S-phase bring about the step-like distribution of nitrogen. The hardness values of the nitrided sample surfaces, along with that of the as-resaved steel are listed in Table 2.…”

Section: Microstructurementioning

confidence: 99%

Effects of Gas Nitriding Temperature on the Surface Properties of a High Manganese TWIP Steel

Xia

Zhao

Xing

et al. 2017

Metals

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Abstract:The effects of gas nitriding temperature on the cross section morphology, element nitrogen distribution, and surface layer compositions of a cold rolled and pre-strained high manganese austenitic TWIP steel 25Mn-3Cr-3Al-0.3C-0.01N and the corresponding anti-corrosion ability have been studied. The results show that, depending on nitriding temperature, the distribution of element nitrogen and main phase compositions are significantly different in the nitriding layers. At a temperature lower than 500 • C, the main composition in the modified layer is S-phase and the nitrogen concentration linearly decreases from the surface to the center, while Fe 4 N forms with S-phase and a step-like distribution of nitrogen content is present at nitriding temperature of 600 • C. Caused by the increasing of modified layer thickness and the formation of S-phase and Fe 4 N, the surface hardness was obviously enhanced. Anodic polarization curves in 3.5 wt. % NaCl solution indicate that the nitrided processes have a tremendous modification effect on anti-corrosion ability. Moreover, the increase of (111) oriented grain, caused by the elevated nitriding temperature, has a positive effect on the corrosion resistance.

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“…The nitriding was conducted using a broad beam Kaufman nitrogen ion source. Details of the ion beam nitriding were previously reported [16]. The Nitrogen depth pro¯les were measured employing nuclear reaction analysis (NRA) technique.…”

Section: ¡3mentioning

confidence: 99%

Mass-transport driven by surface instabilities in metals under reactive plasma/ion beam treatment at moderate temperature

et al. 2004

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This paper presents a generalized approach to the mechanisms of oxidation, hydrogenation and nitriding of metals under ion irradiation with reactive particles at elevated temperatures. Experimental results on the plasma oxidation of bilayered Y/Zr lms, the plasma hydrogenation of Mg lms and the ion beam (1.2 keV N + 2 ) nitriding of stainless steel are presented and discussed. We make special emphasis on the analysis of surface e¬ects and their role in the initiation of mixing of bilayered lms, the ingress of reactive species in the bulk and the restructuring of the surface layers. It is suggested that primary processes driving reactive atoms from the surface into the bulk are surface instabilities induced by thermal and ballistic surface atom relocations under reactive adsorption and ion irradiation, respectively. The di¬usion of adatoms and vacancies, at temperature when they become mobile, provide the means to relax the surface energy. It is recognized that the stabilizing e¬ect of surface adatom di¬usion is signi cant at temperatures below 300-350 o C. As the temperature increases, the role of surface adatom di¬usion decreases and processes in the bulk become dominant. The atoms of subsurface monolayers occupy energetically favorable sites on the surface, and result in reduced surface energy.

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High current density nitrogen implantation of an austenitic stainless steel

Cited by 59 publications

References 20 publications

Magnetic layer formation on plasma nitrided CoCrMo alloy

Magnetic layer formation on plasma nitrided CoCrMo alloy

Effects of Gas Nitriding Temperature on the Surface Properties of a High Manganese TWIP Steel

Mass-transport driven by surface instabilities in metals under reactive plasma/ion beam treatment at moderate temperature

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