Surface processes and diffusion mechanisms of ion nitriding of stainless steel and aluminium

Möller, W.; Parascandola, S.; Telbizova, T; Günzel, R.; Richter, E.

doi:10.1016/s0257-8972(00)01015-x

Cited by 142 publications

(60 citation statements)

References 22 publications

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“…Moskalioviene 13 calculated that the value of the pre-exponential constant was 8.37 E-6 m2 / s and Parascandola 18 assumed for their calculations of nitrogen diffusion profiles a pre-exponential constant of E-7 m2 / s. For the activation energy, both Parascandola 18 and Möller 19 assumed to his calculations the value of 1.1 eV. Comparing the activation energy values reported on literature with those calculated for the austenitic phase of the duplex stainless steel in this study, the difference was only 0.18 eV.…”

Section: Abstract: Plasma Nitriding Duplex Stainless Steel Nitrogenmentioning

confidence: 99%

On the Nitrogen Diffusion in a Duplex Stainless Steel

Bobadilla

Tschiptschin

2015

Mat. Res.

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Section: Abstract: Plasma Nitriding Duplex Stainless Steel Nitrogenmentioning

confidence: 99%

On the Nitrogen Diffusion in a Duplex Stainless Steel

Bobadilla

Tschiptschin

2015

Mat. Res.

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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%

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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“…26 These textures, however, were determined not only because of their important effect on the isotropic properties of coatings but also because x-ray diffraction (XRD) analysis is more accessible than transmission electron microscopy, especially XTEM. Therefore, the texture models derived fr as is applied.…”

Section: Tables and Figuresmentioning

confidence: 99%

“…austenitic lattice because of the preferential Cr-Cr bonding [21] . Also because of preferential bonding of nitrogen to chromium [22][23][24] , the nitriding of the Fe-Cr-Ni austenitic stainless steels follows a trapping and de-trapping mode [25][26][27] . The structure of nitrided stainless steel depends strongly on the nitriding temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitriding Time on the Structural Evolution and Properties of Austenitic Stainless Steel Nitrided Using High Power Pulsed DC Glow Discharge Ar/N2 Plasma

Yang

Kitchen

Luo

et al. 2016

J. Coat. Sci. Technol.

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A high power pulsed DC glow discharge plasma (HPPGDP) system was employed to perform fast nitriding of AISI 316 austenitic stainless steel in Ar and N2 atmosphere. In-situ optical emission spectroscopy and Infrared pyrometer measurements were used during the plasma nitriding to investigate the effect of dynamic plasma on the nitriding behaviour. SEM and EDX, XRD, Knoop indentation, and tribo-tests were used to characterize microstructures and properties of the nitrided austenitic stainless steel samples.HPPGDP produced high ionization of both Ar and N2in the plasma that corresponded to dense ion bombardment on the biases steel samples to induce effective plasma surface heating and to form high nitrogen concentration on the biased steel surfaces, and therefore fast nitriding (> 10µm/hour) was achieved. Various phases were identified on the nitrided stainless steel samples formed from a predominantly a single phase of nitrogen supersaturated austenite toa multi-phase structure comprising chromium nitride, iron nitride and ferrite dependent on the nitriding time. All the nitrided AISI 316 austenitic stainless steel samples were evaluated with high hardness (up to 17.3 GPa) and exceptional wear resistance sliding to against hardened steel balls and tungsten carbide balls.

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Surface processes and diffusion mechanisms of ion nitriding of stainless steel and aluminium

Cited by 142 publications

References 22 publications

On the Nitrogen Diffusion in a Duplex Stainless Steel

On the Nitrogen Diffusion in a Duplex Stainless Steel

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

Effect of Nitriding Time on the Structural Evolution and Properties of Austenitic Stainless Steel Nitrided Using High Power Pulsed DC Glow Discharge Ar/N2 Plasma

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