A model to predict the s-phase thickness and the change in corrosion behavior toward H2SO4 of 316L austenitic stainless steel after plasma nitriding

Reinders, Phillip Marvin; Bräuer, Günter

doi:10.1016/j.surfcoat.2023.130135

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…Figure 2 shows the cross-sectional micrographs of the various samples, followed by etching with a chemical solution containing 10 g CuSO 4 •5H 2 O, 2 mL H 2 SO 4 , 40 mL HCl, and 40 mL H 2 O. It revealed a white layer on the nitrided surface, expressly referred to as the S-phase layer [21]. As increase in the nitriding temperature corresponded to an augmentation in the thickness of the S-phase layer, extending from 5.5 to 13.1 µm.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Rapid Hollow Cathode Plasma Nitriding Treatment on Corrosion Resistance and Friction Performance of AISI 304 Stainless Steel

Lu,

Dou,

Zhou

et al. 2023

Materials

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Low-temperature plasma nitriding of austenitic stainless steel can ensure that its corrosion resistance does not deteriorate, improving surface hardness and wear performance. Nevertheless, it requires a longer processing time. The hollow cathode discharge effect helps increase the plasma density quickly while radiatively heating the workpiece. This work is based on the hollow cathode discharge effect to perform a rapid nitriding strengthening treatment on AISI 304 stainless steels. The experiments were conducted at three different temperatures (450, 475, and 500 °C) for 1 h in an ammonia atmosphere. The samples were characterized using various techniques, including SEM, AFM, XPS, XRD, and micro-hardness measurement. Potentiodynamic polarization and electrochemical impedance spectroscopy methods were employed to assess the electrochemical behavior of the different samples in a 3.5% NaCl solution. The finding suggests that rapid hollow cathode plasma nitriding can enhance the hardness, wear resistance, and corrosion properties of AISI 304 stainless steel.

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Section: Resultsmentioning

confidence: 99%

“…The presence of the S-phase has been found to enhance the surface hardness, corrosion resistance, and wear resistance of austenitic stainless steels [20][21][22][23]. In traditional plasma nitriding, the edge effect will appear on the surface, resulting in significant differences in the structure and properties [24].…”

Section: Introductionmentioning

confidence: 99%

Effect of Rapid Hollow Cathode Plasma Nitriding Treatment on Corrosion Resistance and Friction Performance of AISI 304 Stainless Steel

Lu,

Dou,

Zhou

et al. 2023

Materials

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Effect of Boronizing on the Corrosion Resistance of Martensitic Stainless Steels

Mohan,

Kumar,

Chaudhari

2024

J. of Materi Eng and Perform

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Modeling of Plasma Nitriding of Austenitic Stainless Steel through a Mask

Andriūnas,

Čerapaitė-Trušinskienė,

Galdikas

2024

Coatings

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In this work, 2D simulations of stainless steel nitriding through a mask were performed with two configurations: with and without lateral adsorption under the mask, depending on the strength of the mask adhesion. The stress-induced diffusion and trapping–detrapping process are included as the main mechanisms of nitrogen mass transport. The main focus is on the analysis of the swelling process, which affects the expansion of the material. The surface concentration profiles and topographical profiles along the surface are calculated and compared with experimentally registered ones taken from the literature, and they show a good agreement. This allows for estimation of the values of model parameters. Because nitriding processes takes place in vertical and horizontal directions, the anisotropic aspect of nitriding are analyzed. It is shown that the adherence of the mask significantly influences the topographical profile and the anisotropy of nitriding, because in the case of a weakly adhered mask, a lateral adsorption process takes place under the mask. The influence of swelling and anisotropy in the case of pattern nitriding in small dimensions is discussed.

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A model to predict the s-phase thickness and the change in corrosion behavior toward H2SO4 of 316L austenitic stainless steel after plasma nitriding

Cited by 4 publications

References 27 publications

Effect of Rapid Hollow Cathode Plasma Nitriding Treatment on Corrosion Resistance and Friction Performance of AISI 304 Stainless Steel

Effect of Rapid Hollow Cathode Plasma Nitriding Treatment on Corrosion Resistance and Friction Performance of AISI 304 Stainless Steel

Effect of Boronizing on the Corrosion Resistance of Martensitic Stainless Steels

Modeling of Plasma Nitriding of Austenitic Stainless Steel through a Mask

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