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Sun, Yong; Li, Xiaoying; Bell, T.

doi:10.1023/a:1004647423860

Cited by 197 publications

(98 citation statements)

References 5 publications

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“…Figure 4a shows the XRD patterns of thermally treated specimens, too. It can be seen that as the temperature increases, the peaks corresponding to the γ and CrN phases increase, indicating that for the conditions studied, both the γ and CrN phases are favoured at higher temperatures [24], whereas the intensity of the ε peaks decreases, which is in agreement with Sun et al [23]. Oddershede et al [7] have evidenced that the development of CrN retrieves Cr atoms from solid solution and effectively yields a matrix rich in Fe and Ni and, subsequently, the iron-based nitrides γ and ε can develop in the matrix more easily.…”

Section: X-ray Diffraction (Xrd)supporting

confidence: 88%

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Role of plasma nitriding temperature and time in the corrosion behaviour and microstructure evolution of 15-5 PH stainless steel

Bernardelli¹,

Borges²,

Fontana³

2010

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Section: X-ray Diffraction (Xrd)supporting

confidence: 88%

“…• C was resistant to chemical attack by reagent Marble [23]. At higher treatment temperatures, the transition between the substrate and the surface layer was more pronounced.…”

Section: Simultaneous Ageing and Nitridingmentioning

confidence: 96%

Role of plasma nitriding temperature and time in the corrosion behaviour and microstructure evolution of 15-5 PH stainless steel

Bernardelli¹,

Borges²,

Fontana³

2010

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“…Asami and Hashimoto reported that the nature of chemical bonding of metal elements can be estimated using the chemical shift in the electron binding energy measured by XPS. 43 It has been revealed that the pitting corrosion resistance of austenitic stainless steels is improved with interstitial nitrogen, [23][24][25][26][27][28][29] and the presence of chemical bonding of the induced interstitial nitrogen to chromium in the improved stainless steel was Table IV. Work functions of 0 C, 0.3 C, 0.6 C, 0.8 C, and 1.1 C steels defined as photoelectric threshold energy in PYS spectra (Fig.…”

Section: Effect Of Comentioning

confidence: 99%

“…[23][24][25][26][27][28][29] * Electrochemical Society Member. z E-mail: CHIBA.Aya@nims.go.jp It has been reported that the generation of hydroxide ions (OH − ) as a by-product of the dissolution of interstitial nitrogen in the exposed environment (alkalization) is one of mechanisms contributing to the improved localized corrosion resistance of austenitic stainless steels with interstitial nitrogen.…”

mentioning

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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“…4 A wealth of research was devoted to explain the nature of expanded austenite, so far without a satisfactory understanding of its formation and structure. [5][6][7][8][9][10][11] According to literature, the expanded austenite is the main phase in different austenitic stainless steel surfaces after nitrogen ͑N͒ ion implantation. 12 It was recently suggested the presence of two different phases in the nitrided layer.…”

Section: Introductionmentioning

confidence: 99%

Magnetic and structural properties of ion nitrided stainless steel

Basso

Pimentel

Weber³

et al. 2009

Journal of Applied Physics

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The magnetic properties and crystalline structure of expanded austenite obtained by ion beam nitriding of AISI 316 steel are investigated. Magnetic force microscopy reveals that the nitrogen expanded austenite has two different layers, an outermost ferromagnetic layer and a paramagnetic layer beneath it. Superimposing the nitrogen concentration profile determined by secondary neutral mass spectrometry and the magnetic force microscopy image, one can see that the paramagnetic-ferromagnetic transition takes place at the inflection point of the nitrogen concentration profile at about 14Ϯ 2 N at. %. Conventional and glancing angle x-ray diffraction suggests that nitrogen could occupy first tetrahedral interstitial positions ͑nitrogen-poor paramagnetic phase͒ and then, after saturation of Cr traps, octahedral interstitial positions ͑nitrogen-rich ferromagnetic phase͒. The ferromagnetic-paramagnetic transition is seen to be governed by Cr ͑traps͒-N interactions.

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Cited by 197 publications

References 5 publications

Role of plasma nitriding temperature and time in the corrosion behaviour and microstructure evolution of 15-5 PH stainless steel

Role of plasma nitriding temperature and time in the corrosion behaviour and microstructure evolution of 15-5 PH stainless steel

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

Magnetic and structural properties of ion nitrided stainless steel

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