Inter-Diffusion between NiO Coating and the Oxide Scale on Fe-22Cr Alloy

Anette Nørgaard Hansson; Mogens Bjerg Mogensen; Søren Linderoth; Marcel A.J. Somers

Inter-Diffusion between NiO Coating and the Oxide Scale on Fe-22Cr Alloy

Anette Nørgaard Hansson, Mogens Bjerg Mogensen, Søren Linderoth, Marcel A.J. Somers

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Abstract

The effect of Ni and NiO coatings on Fe-22Cr during oxidation at 1173K in 1% H2O was examined with respect to scale microstructure for oxidation times between 0 and 504 hours. Upon oxidation of the as pre-treated Fe-22Cr, Cr2O3 and a spinel developed. Oxidation and inter-diffusion between the Ni coating and Fe-22Cr occurred simultaneously. The scale consisted of NiO, a Fe-Ni spinel and Cr2O3. For the NiO coated alloy, a thin spinel layer developed between the NiO coating and the Cr2O3 scale. The microstructures of the scales are discussed with respect to calculated isotherms in the Fe-Cr-O, Cr-Ni-O and Ni-Fe-O phase diagrams and inter-diffusion profiles between Ni and Fe-22Cr.

Original language	English
Journal	Journal of Corrosion Science and Engineering
Volume	6
Issue number	73
Pages (from-to)	12
ISSN	1466-8858
Publication status	Published - 2003

Keywords

Materials technology

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title = "Inter-Diffusion between NiO Coating and the Oxide Scale on Fe-22Cr Alloy",

abstract = "The effect of Ni and NiO coatings on Fe-22Cr during oxidation at 1173K in 1% H2O was examined with respect to scale microstructure for oxidation times between 0 and 504 hours. Upon oxidation of the as pre-treated Fe-22Cr, Cr2O3 and a spinel developed. Oxidation and inter-diffusion between the Ni coating and Fe-22Cr occurred simultaneously. The scale consisted of NiO, a Fe-Ni spinel and Cr2O3. For the NiO coated alloy, a thin spinel layer developed between the NiO coating and the Cr2O3 scale. The microstructures of the scales are discussed with respect to calculated isotherms in the Fe-Cr-O, Cr-Ni-O and Ni-Fe-O phase diagrams and inter-diffusion profiles between Ni and Fe-22Cr.",

keywords = "Materials technology",

author = "Hansson, {Anette N{\o}rgaard} and Mogensen, {Mogens Bjerg} and S{\o}ren Linderoth and Somers, {Marcel A.J.}",

year = "2003",

language = "English",

volume = "6",

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journal = "Journal of Corrosion Science and Engineering",

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publisher = "University of Manchester Corrosion and Protection Centre",

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TY - JOUR

T1 - Inter-Diffusion between NiO Coating and the Oxide Scale on Fe-22Cr Alloy

AU - Hansson, Anette Nørgaard

AU - Mogensen, Mogens Bjerg

AU - Linderoth, Søren

AU - Somers, Marcel A.J.

PY - 2003

Y1 - 2003

N2 - The effect of Ni and NiO coatings on Fe-22Cr during oxidation at 1173K in 1% H2O was examined with respect to scale microstructure for oxidation times between 0 and 504 hours. Upon oxidation of the as pre-treated Fe-22Cr, Cr2O3 and a spinel developed. Oxidation and inter-diffusion between the Ni coating and Fe-22Cr occurred simultaneously. The scale consisted of NiO, a Fe-Ni spinel and Cr2O3. For the NiO coated alloy, a thin spinel layer developed between the NiO coating and the Cr2O3 scale. The microstructures of the scales are discussed with respect to calculated isotherms in the Fe-Cr-O, Cr-Ni-O and Ni-Fe-O phase diagrams and inter-diffusion profiles between Ni and Fe-22Cr.

AB - The effect of Ni and NiO coatings on Fe-22Cr during oxidation at 1173K in 1% H2O was examined with respect to scale microstructure for oxidation times between 0 and 504 hours. Upon oxidation of the as pre-treated Fe-22Cr, Cr2O3 and a spinel developed. Oxidation and inter-diffusion between the Ni coating and Fe-22Cr occurred simultaneously. The scale consisted of NiO, a Fe-Ni spinel and Cr2O3. For the NiO coated alloy, a thin spinel layer developed between the NiO coating and the Cr2O3 scale. The microstructures of the scales are discussed with respect to calculated isotherms in the Fe-Cr-O, Cr-Ni-O and Ni-Fe-O phase diagrams and inter-diffusion profiles between Ni and Fe-22Cr.

KW - Materials technology

M3 - Journal article

SN - 1466-8858

VL - 6

SP - 12

JO - Journal of Corrosion Science and Engineering

JF - Journal of Corrosion Science and Engineering

IS - 73

ER -

Inter-Diffusion between NiO Coating and the Oxide Scale on Fe-22Cr Alloy

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