Chemical bonding of nitrogen in low energy high flux implanted austenitic stainless steel

Rivière, J.P.; Cahoreau, M.; Meheust, P

doi:10.1063/1.1469691

Cited by 54 publications

(44 citation statements)

References 21 publications

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“…According to Matthews et al [34], these are created above a critical dose and may be dependent on the orientation of the slip planes relative to the surface, the amount of deformation being thus dependent on the yield stress of the host material. In this study, the elongated shape of the protrusions would be related to "softer" areas of been found after nitridation of AISI 304L stainless steels [36]. Besides, Serventi et al…”

Section: -Discussionmentioning

confidence: 97%

Low energy–high flux nitrogen implantation of an oxide-dispersion-strengthened FeAl intermetallic alloy

2004

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Section: -Discussionmentioning

confidence: 97%

Low energy–high flux nitrogen implantation of an oxide-dispersion-strengthened FeAl intermetallic alloy

2004

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“…44 The influence of the interstitial carbon in the Fe-33Mn-C steels on the work function and the binding energies of Fe 2p 3/2 and Mn 2p 3/2 was, therefore, analyzed. Figure 8a shows the photoemission yields of the 0 C, 0.3 C, 0.6 C, 0.8 C, and 1.1 C steels as a function of the incident photon energy (PYS spectra).…”

Section: Steelmentioning

confidence: 99%

Interstitial Carbon Enhanced Corrosion Resistance of Fe-33Mn-xC Austenitic Steels: Inhibition of Anodic Dissolution

Chiba

Koyama

Akiyama

et al. 2018

J. Electrochem. Soc.

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Five Fe-33Mn-xC steels, referred to as 0 C, 0.3 C, 0.6 C, 0.8 C, and 1.1 C steels according to their carbon content in mass%, were prepared to clarify the effect of interstitial carbon on the dissolution behavior of steel. The 0.3 C, 0.6 C, 0.8 C, and 1.1 C steels indicated a fully austenitic structure with no carbide precipitate. The lattice parameters of the 0.6 C, 0.8 C, and 1.1 C steels calculated from the γ(111) and γ(200) diffraction peaks increased by up to around 0.8% over that of the 0.3 C steel, suggesting that the added carbon was present as interstitial carbon in the steels. The 0.6 C, 0.8 C, and 1.1 C steels were passivated during the anodic polarization measurements in 0.1 M Na 2 SO 4 solution at pH 12.0, whereas the 0 C and 0.3 C steels actively dissolved. The anodic polarization measurements in a buffer solution at pH 10.0 demonstrated a lower dissolution current density for the 0.3 C, 0.6 C, 0.8 C, and 1.1 C steels with higher amounts of interstitial carbon. The dissolution current density at 0.3 V vs. Ag/AgCl (3.33 M KCl) of the 1.1 C steel was reduced to approximately 1 × 10 −2 A m −2 , which was one hundredth that of the 0.3 C steel. The dissolution current density of the steels was not inhibited by the presence of 0.1 M CO 3 2− ions, which is an expected dissolution product of interstitial carbon, implying that the interstitial carbon improved the electrochemical property of the steels themselves. The work function of the 1.1 C steel, which showed improved corrosion resistance with interstitial carbon, was 0.12 eV lower than that of the 0 C steel. Interstitial carbon has been reported to successfully improve the corrosion resistance of austenitic stainless steels. Low-temperature carburizing treatments have been typically applied to introduce a substantial amount of interstitial carbon at the surface region of austenitic stainless steels to form a carbide precipitation free carbon super saturated solid solution layer. [1][2][3][4][5][6][7][8][9] The carburizing treatments are known to dramatically improve the pitting corrosion resistance of austenitic stainless steels in chloride-containing environments. Anodic polarization measurements of the specimens with an exposed area of around 1 cm 2 indicated an increase in the pitting corrosion potential of the carburized stainless steels with interstitial carbon compared to untreated stainless steels. 1,[3][4][5] The microscopic anodic polarization measurements of the carburized stainless steel with a micro-scale electrode area (around 150 μm × 300 μm) containing an MnS inclusion, which is known to act as an initiation site of the pitting of stainless steels, 10-21 demonstrated that no pitting was initiated on the carburized stainless steel despite the presence of the MnS inclusion.6 The micro-scale electrode areas were in situ observed by an optical microscope with a water immersion objective lens (a lateral resolution of ca. 350 nm)19,22 during the microscopic anodic polarization. The microscopic polarization measurements revealed that the carbur...

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“…The N 1s band is attributed to nitrogen forming several metallic compounds and can be identified by a deconvolution procedure. 17,18 The more probable constituents of the N 1s band are obtained from the previous XRD analysis, i.e., CrN, -͑Fe, Cr͒ 3 N, and ␣-ferrite. As noted, only N bonded to Cr, i.e., CrN, shows a marked energy shift ͑"chemical shifts"͒.…”

Section: Resultsmentioning

confidence: 99%

Structural modifications and corrosion behavior of martensitic stainless steel nitrided by plasma immersion ion implantation

Figueroa

Alvarez

Zhang

et al. 2005

Journal of Vacuum Science & Technology A: Vacuum, Surfaces,

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Process window and mechanism of surface property enhancement of 9Cr18 steel using plasma immersion ion implantation J. Vac. Sci. Technol. B 17, 851 (1999) In this work we report a study of the structural modifications and corrosion behavior of martensitic stainless steels ͑MSS͒ nitrided by plasma immersion ion implantation ͑PI 3 ͒. The samples were characterized by x-ray diffraction, scanning electron microscopy, energy dispersive x-ray spectroscopy, photoemission electron spectroscopy, and potentiodynamic electrochemical measurements. Depending on the PI 3 treatment temperature, three different material property trends are observed. At lower implantation temperatures ͑e.g., 360°C͒, the material corrosion resistance is improved and a compact phase of -͑Fe, Cr͒ 3 N, without changes in the crystal morphology, is obtained. At intermediate temperatures ͑e.g., 430°C͒, CrN precipitates form principally at grain boundaries, leading to a degradation in the corrosion resistance compared to the original MSS material. At higher temperatures ͑e.g., 500°C͒, the relatively great mobility of the nitrogen and chromium in the matrix induced random precipitates of CrN, transforming the original martensitic phase into ␣-Fe ͑ferrite͒, and causing a further degradation in the corrosion resistance.

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Chemical bonding of nitrogen in low energy high flux implanted austenitic stainless steel

Cited by 54 publications

References 21 publications

Low energy–high flux nitrogen implantation of an oxide-dispersion-strengthened FeAl intermetallic alloy

Low energy–high flux nitrogen implantation of an oxide-dispersion-strengthened FeAl intermetallic alloy

Interstitial Carbon Enhanced Corrosion Resistance of Fe-33Mn-xC Austenitic Steels: Inhibition of Anodic Dissolution

Structural modifications and corrosion behavior of martensitic stainless steel nitrided by plasma immersion ion implantation

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