Effect of Water Vapor on the Oxidation Mechanisms of a Commercial Stainless Steel for Interconnect Application in High Temperature Water Vapor Electrolysis

-Water vapour mixed with air (10 vol.% H 2 O) has little effect on the AISI 316L stainless steel oxidation under isothermal conditions at 800 and 900 °C. The oxide scale is composed of Cr 2 O 3 and Mn 1.5 Cr 1.5 O 4 located at the external interface. Results show that the presence of water lowers the specimen's mass gain. At 1000 °C, the effect of water vapour on the scale structure is deleterious. In situ X-ray diffraction permits to show that the breakaway is due to iron oxidation starting after about 30 hours. This leads to an external Fe 2 O 3 scale growth and an internal multilayered FeCr 2 O 4 scale formation.

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“…Then, the diffusion of hydrogen-containing species could occur. [42]. The low H + and OH -radii permit their diffusion through the oxide scale.…”

Section: Discussionmentioning

confidence: 99%

Influence of water vapour on 316L oxidation at high temperature - in situ X-Ray diffraction

Buscail¹,

Rolland²,

Perrier³

2015

Ann. Chim. Sci. Mat.

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“…Ardigo et al 8 utilized SEM-EDX and SIMS to identify the corrosive processes in a high temperature water vapour electrolysis unit, designed for hydrogen production. This work focussed on oxide scale growth processes on ferritic stainless steel, K41X (AISI 441) in the cathode atmospheres (10% H 2 , 90% H 2 O).…”

Section: Ferrous Metalsmentioning

confidence: 99%

“…Analysis of corrosion has been approached in a similar way to coatings, using multiple spectroscopic methods to provide structural and compositional information. Ardigo et al 8 utilized SEM-EDX and SIMS to identify the corrosive processes in a high temperature water vapour electrolysis unit, designed for hydrogen production. This work focussed on oxide scale growth processes on ferritic stainless steel, K41X (AISI 441) in the cathode atmospheres (10% H 2 , 90% H 2 O).…”

Section: Ferrous Metalsmentioning

confidence: 99%

Atomic spectrometry update. Review of advances in the analysis of metals, chemicals and functional materials

Gibson

Carter

Fisher

et al. 2014

J. Anal. At. Spectrom.

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“…The authors estimated that the water dissociation is the main reason of the iron oxides formation. Once water is dissociated on the surface of the sample, hydrogen containing species are likely to diffuse into the oxide scale (initially composed of chromia and Cr-Mn spinel), as shown by Ardigo et al [17]. When H + and/or OH − reach the metallic substrate, H 2 and FeO form.…”

mentioning

confidence: 92%

Impact of Water Vapor on the High Temperature Oxidation of Wrought and Selective Laser Melted (SLM) AISI 316L

Siri¹,

Popa²,

Vion³

et al. 2021

Oxid Met

Self Cite

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This work focuses on the high temperature oxidation of AISI 316L produced by Selective Laser Melting (SLM) and by conventional metallurgy (wrought), used as reference. Oxidation tests were performed at 900 °C for up to 3000 h in laboratory air and up to 1000 h in wet air (air-10 vol.% H 2 O). X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectrometry were used for the characterization of the corrosion products. SLM specimens exhibit a better oxidation resistance in both atmospheres. SLM samples exhibit parabolic behavior (k p = 1.7 .10 −13 g 2 .cm −4 .s −1 ) throughout 3000 h in air while wrought (k p = 1.4 .10 −13 g 2 .cm −4 .s −1 ) samples undergo breakaway oxidation after 1000 h of exposure. These observations are emphasized in wet air, since wrought coupons present catastrophic oxidation after 100 h, while parabolic behavior (k p = 7.0 .10 −14 g 2 .cm −4 .s −1 ) is observed all along the 1000 h exposure for SLM samples. The better behavior observed for SLM samples can be explained by the growth of a dense and continuous Cr 2 O 3 protective layer.

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Effect of Water Vapor on the Oxidation Mechanisms of a Commercial Stainless Steel for Interconnect Application in High Temperature Water Vapor Electrolysis

Cited by 29 publications

References 19 publications

Influence of water vapour on 316L oxidation at high temperature - in situ X-Ray diffraction

Influence of water vapour on 316L oxidation at high temperature - in situ X-Ray diffraction

Atomic spectrometry update. Review of advances in the analysis of metals, chemicals and functional materials

Impact of Water Vapor on the High Temperature Oxidation of Wrought and Selective Laser Melted (SLM) AISI 316L

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