The effect of surface treatment on the oxidation of ferritic stainless steels used for solid oxide fuel cell interconnects

Cooper, Lawton S.; Benhaddad, S.; Wood, Anthony; Ivey, Douglas G.

doi:10.1016/j.jpowsour.2008.06.010

Cited by 78 publications

(47 citation statements)

References 22 publications

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“…These grain boundaries favor the formation of oxides and avoid the solubilization of chrome on the surface. Therefore, it was expected that a denser and more protective oxide would be formed on the deformed surface of the shot peening sample 2,36 . However, this phenomenon did not cause the decrease of the oxidation (rust growth) for the sample treated with the shot peening process in this present study.…”

Section: Resultsmentioning

confidence: 99%

“…These types of steel have as characteristics easy processing and good formability combined with a low price, compared to other types of stainless steel 1,2 . The shot peening process is a surface treatment method that increases the surface hardness of metallic materials by creating a sharp compressive stress due to ball impact on the material surface [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Shot Peening Process on the Corrosion and Oxidation Resistance of AISI430 Stainless Steel

et al. 2015

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of the Shot Peening Process on the Corrosion and Oxidation Resistance of AISI430 Stainless Steel

et al. 2015

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“…The presence of (Mn,Cr) 3 O 4 spinel on the surface of the bare substrate refers to ferritic stainless steels that normally contains small levels of Mn. When the alloy is subjected to the temperature range of 650-850°C, the (Mn,Cr) 3 O 4 spinel layer will be formed, which is non-protective [21]. Fe 2 O 3 was observed in the oxide scale of non-coated Fe-Cr alloy in previous studies [19,20,[22][23][24] where a dense sub-layer of Cr 2 O 3, and a loose (Mn,Cr) 3 O 4 layer, were formed.…”

Section: Evaluation Of the Parabolic Rate Constant In Isothermal Oxidmentioning

confidence: 92%

Evaluation of the Parabolic Rate Constant During Different Types of Oxidation Tests for Spinel Coated Fe–17%Cr Alloy

Ebrahimifar

Zandrahimi

2010

Oxid Met

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Oxidation resistance, and the long-term stability of interconnects in solid oxide fuel cells, can be ameliorated by the use of a protective, effective, relatively dense and well adherent, spinel coating. In this study, the pack cementation method was employed to coat cobalt onto AISI 430 ferritic stainless steel. Isothermal oxidation, cyclic oxidation, and oxidation at different temperatures (600-900°C) were applied to evaluate the parabolic rate constant (k p ). In each test, the coated samples demonstrated lower k p, indicating that the coating layer was effective. The formation of MnCo 2 O 4 and CoCr 2 O 4 spinels, during the oxidation, improved the oxidation resistance of AISI 430 ferritic stainless steel.

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“…In general, the presence of carbon (C), oxygen (D), N and iron (Fe) are shown at the surface independently of treatment variations, as in Table 2, which contains molecule percent bonding of each chemical element in the sample surface detected on the extended spectrum 24 . The chemical elements in the surface presented at XPS spectra of specific bonding energy of each element is capable of providing information and possible species of the chemical bonds on the sample surface 25,26 . It was observed that the concentration of carbon and nitrogen contained in the samples indicate that it was formed a CN x film on the steel.…”

Section: Xps Surface Analysismentioning

confidence: 99%

XPS, XRD and laser raman analysis of surface modified of 6150 steel substrates for the deposition of thick and adherent diamond-like carbon coatings

2013

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Although the 6150 steel has an excellent fatigue and impact resistance, it is unsuitable to operate it when the corrosion is a limited factor. We propose here a sequence of steel pre-treatment by carburizing, carbonitriding and nitriding in order to improve the poor adhesion between Diamond Like-Carbon coatings on steel. This sequence is our attempt to reduce the difference between the coefficients of thermal expansion of steel and DLC through the graded interface. This work demonstrates the quantitative analysis of the molecules present at surface using X-ray photoelectron spectroscopy. The crystallographic structures are investigated by X-ray diffraction which shows the formation of carbides and nitride phases. Raman spectroscopy reveals the carburizing surface characteristics where DLC coating is nucleated and grown at the substrate. At the end of the analysis it is possible to verify which molecules and phases are formed on the steel surface interface after each step of pre-treatment.

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The effect of surface treatment on the oxidation of ferritic stainless steels used for solid oxide fuel cell interconnects

Cited by 78 publications

References 22 publications

Effect of the Shot Peening Process on the Corrosion and Oxidation Resistance of AISI430 Stainless Steel

Effect of the Shot Peening Process on the Corrosion and Oxidation Resistance of AISI430 Stainless Steel

Evaluation of the Parabolic Rate Constant During Different Types of Oxidation Tests for Spinel Coated Fe–17%Cr Alloy

XPS, XRD and laser raman analysis of surface modified of 6150 steel substrates for the deposition of thick and adherent diamond-like carbon coatings

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