Oxide scale formation of Fe-Cr alloys and oxygen diffusion in the scale

Teruhisa Horita; Katsuhiko Yamaji; Yueping Xiong; Haruo Kishimoto; Natsuko Sakai; Harumi Yokokawa

doi:10.1016/j.ssi.2004.09.045

Oxide scale formation of Fe-Cr alloys and oxygen diffusion in the scale

Teruhisa Horita^*
, Katsuhiko Yamaji
, Yueping Xiong
, Haruo Kishimoto
, Natsuko Sakai
, Harumi Yokokawa

^*Corresponding author for this work

National Institute of Advanced Industrial Science and Technology

Research output: Contribution to journal › Conference article › peer-review

49 Scopus citations

Abstract

Oxide scales formed on an Fe-Cr alloy in fuel gas atmospheres (H ₂-H₂O and CH₄-H₂O) were investigated by secondary ion mass spectrometry (SIMS). From surface to oxide scale/alloy interfaces, Mn-Fe-(Cr) spinel, Cr₂O₃, SiO ₂, and Al₂O₃ inner oxides were identified by SEM and SIMS depth profiles. The elemental distribution analysis suggests that the grain boundary diffusion in the alloy plays an important role on growth of oxide scales. The growth of oxide scale followed the parabolic relationship between scale thickness and annealing duration time. The estimated growth rates of oxide scales are in an order of 10^-14 cm² s ^-1 at 1073 K. Oxygen diffusion through the oxide scales were evaluated by ¹⁸O diffusion with SIMS analysis. The diffusion coefficients of ¹⁸O in the oxide scales were 3.1-5.4×10 ^-12 cm² s^-1 at 1073 K, which were larger than the obtained growth rates of the oxide scales.

Original language	English
Pages (from-to)	157-163
Number of pages	7
Journal	Solid State Ionics
Volume	175
Issue number	1-4
DOIs	https://doi.org/10.1016/j.ssi.2004.09.045
State	Published - 30 Nov 2004
Externally published	Yes
Event	Fourteenth International Conference on Solid State Ionics - Monterey, CA., United States Duration: 22 Jun 2003 → 27 Jun 2003

Keywords

Fe-Cr alloy
Oxidation
Oxide scales
Oxygen diffusion
SIMS
SOFC

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10.1016/j.ssi.2004.09.045

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@article{870660d4c968475faf6bd416e9a5eda4,

title = "Oxide scale formation of Fe-Cr alloys and oxygen diffusion in the scale",

abstract = "Oxide scales formed on an Fe-Cr alloy in fuel gas atmospheres (H 2-H2O and CH4-H2O) were investigated by secondary ion mass spectrometry (SIMS). From surface to oxide scale/alloy interfaces, Mn-Fe-(Cr) spinel, Cr2O3, SiO 2, and Al2O3 inner oxides were identified by SEM and SIMS depth profiles. The elemental distribution analysis suggests that the grain boundary diffusion in the alloy plays an important role on growth of oxide scales. The growth of oxide scale followed the parabolic relationship between scale thickness and annealing duration time. The estimated growth rates of oxide scales are in an order of 10-14 cm2 s -1 at 1073 K. Oxygen diffusion through the oxide scales were evaluated by 18O diffusion with SIMS analysis. The diffusion coefficients of 18O in the oxide scales were 3.1-5.4×10 -12 cm2 s-1 at 1073 K, which were larger than the obtained growth rates of the oxide scales.",

keywords = "Fe-Cr alloy, Oxidation, Oxide scales, Oxygen diffusion, SIMS, SOFC",

author = "Teruhisa Horita and Katsuhiko Yamaji and Yueping Xiong and Haruo Kishimoto and Natsuko Sakai and Harumi Yokokawa",

year = "2004",

month = nov,

day = "30",

doi = "10.1016/j.ssi.2004.09.045",

language = "英语",

volume = "175",

pages = "157--163",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier B.V.",

number = "1-4",

note = "Fourteenth International Conference on Solid State Ionics ; Conference date: 22-06-2003 Through 27-06-2003",

}

TY - JOUR

T1 - Oxide scale formation of Fe-Cr alloys and oxygen diffusion in the scale

AU - Horita, Teruhisa

AU - Yamaji, Katsuhiko

AU - Xiong, Yueping

AU - Kishimoto, Haruo

AU - Sakai, Natsuko

AU - Yokokawa, Harumi

PY - 2004/11/30

Y1 - 2004/11/30

N2 - Oxide scales formed on an Fe-Cr alloy in fuel gas atmospheres (H 2-H2O and CH4-H2O) were investigated by secondary ion mass spectrometry (SIMS). From surface to oxide scale/alloy interfaces, Mn-Fe-(Cr) spinel, Cr2O3, SiO 2, and Al2O3 inner oxides were identified by SEM and SIMS depth profiles. The elemental distribution analysis suggests that the grain boundary diffusion in the alloy plays an important role on growth of oxide scales. The growth of oxide scale followed the parabolic relationship between scale thickness and annealing duration time. The estimated growth rates of oxide scales are in an order of 10-14 cm2 s -1 at 1073 K. Oxygen diffusion through the oxide scales were evaluated by 18O diffusion with SIMS analysis. The diffusion coefficients of 18O in the oxide scales were 3.1-5.4×10 -12 cm2 s-1 at 1073 K, which were larger than the obtained growth rates of the oxide scales.

AB - Oxide scales formed on an Fe-Cr alloy in fuel gas atmospheres (H 2-H2O and CH4-H2O) were investigated by secondary ion mass spectrometry (SIMS). From surface to oxide scale/alloy interfaces, Mn-Fe-(Cr) spinel, Cr2O3, SiO 2, and Al2O3 inner oxides were identified by SEM and SIMS depth profiles. The elemental distribution analysis suggests that the grain boundary diffusion in the alloy plays an important role on growth of oxide scales. The growth of oxide scale followed the parabolic relationship between scale thickness and annealing duration time. The estimated growth rates of oxide scales are in an order of 10-14 cm2 s -1 at 1073 K. Oxygen diffusion through the oxide scales were evaluated by 18O diffusion with SIMS analysis. The diffusion coefficients of 18O in the oxide scales were 3.1-5.4×10 -12 cm2 s-1 at 1073 K, which were larger than the obtained growth rates of the oxide scales.

KW - Fe-Cr alloy

KW - Oxidation

KW - Oxide scales

KW - Oxygen diffusion

KW - SIMS

KW - SOFC

UR - https://www.scopus.com/pages/publications/10044230679

U2 - 10.1016/j.ssi.2004.09.045

DO - 10.1016/j.ssi.2004.09.045

M3 - 会议文章

AN - SCOPUS:10044230679

SN - 0167-2738

VL - 175

SP - 157

EP - 163

JO - Solid State Ionics

JF - Solid State Ionics

IS - 1-4

T2 - Fourteenth International Conference on Solid State Ionics

Y2 - 22 June 2003 through 27 June 2003

ER -

Oxide scale formation of Fe-Cr alloys and oxygen diffusion in the scale

Abstract

Keywords

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