High temperature oxidation of Co-W electroplated type 430 stainless steel for the interconnect of solid oxide fuel cells

Lu Gan; Hideyuki Murakami; Isao Saeki

doi:10.1016/j.corsci.2018.02.026

High temperature oxidation of Co-W electroplated type 430 stainless steel for the interconnect of solid oxide fuel cells

Lu Gan, Hideyuki Murakami, Isao Saeki

Graduate School of Advanced Science and Engineering

Research output: Contribution to journal › Article

8 Citations (Scopus)

Abstract

Cobalt–tungsten alloy layer containing 2.4 at% W was electroplated on type 430 stainless steel (Fe–16 mass% Cr), and it was subjected to high-temperature oxidation at 800 °C in Air–3 vol% H₂O atmosphere for 1000 h. A five-layered oxide of Co₃O₄, FeCo₂O₄, CoWO₄, (Co,Fe,Cr)₃O₄, and Cr₂O₃ formed within 1 h, and the structure retained up to 1000 h. The outward diffusion of Cr³⁺ was effectively prevented by the CoWO₄ layer. In the oxide, Co and W exist as divalent and hexavalent ions respectively, and there is no trivalent cation sites or trivalent cation vacancy through which Cr³⁺ diffuses.

Original language	English
Pages (from-to)	162-168
Number of pages	7
Journal	Corrosion Science
Volume	134
DOIs	https://doi.org/10.1016/j.corsci.2018.02.026
Publication status	Published - 2018 Apr 15

Keywords

A. Stainless steel
B. SEM, XRD
C. High temperature corrosion

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

Access to Document

10.1016/j.corsci.2018.02.026

Fingerprint Dive into the research topics of 'High temperature oxidation of Co-W electroplated type 430 stainless steel for the interconnect of solid oxide fuel cells'. Together they form a unique fingerprint.

Cite this

Gan, L., Murakami, H., & Saeki, I. (2018). High temperature oxidation of Co-W electroplated type 430 stainless steel for the interconnect of solid oxide fuel cells. Corrosion Science, 134, 162-168. https://doi.org/10.1016/j.corsci.2018.02.026

@article{5c2566fdaa134c25bcc38111dcf3701b,

title = "High temperature oxidation of Co-W electroplated type 430 stainless steel for the interconnect of solid oxide fuel cells",

abstract = "Cobalt–tungsten alloy layer containing 2.4 at% W was electroplated on type 430 stainless steel (Fe–16 mass% Cr), and it was subjected to high-temperature oxidation at 800 °C in Air–3 vol% H2O atmosphere for 1000 h. A five-layered oxide of Co3O4, FeCo2O4, CoWO4, (Co,Fe,Cr)3O4, and Cr2O3 formed within 1 h, and the structure retained up to 1000 h. The outward diffusion of Cr3+ was effectively prevented by the CoWO4 layer. In the oxide, Co and W exist as divalent and hexavalent ions respectively, and there is no trivalent cation sites or trivalent cation vacancy through which Cr3+ diffuses.",

keywords = "A. Stainless steel, B. SEM, XRD, C. High temperature corrosion",

author = "Lu Gan and Hideyuki Murakami and Isao Saeki",

year = "2018",

month = apr,

day = "15",

doi = "10.1016/j.corsci.2018.02.026",

language = "English",

volume = "134",

pages = "162--168",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - High temperature oxidation of Co-W electroplated type 430 stainless steel for the interconnect of solid oxide fuel cells

AU - Gan, Lu

AU - Murakami, Hideyuki

AU - Saeki, Isao

PY - 2018/4/15

Y1 - 2018/4/15

N2 - Cobalt–tungsten alloy layer containing 2.4 at% W was electroplated on type 430 stainless steel (Fe–16 mass% Cr), and it was subjected to high-temperature oxidation at 800 °C in Air–3 vol% H2O atmosphere for 1000 h. A five-layered oxide of Co3O4, FeCo2O4, CoWO4, (Co,Fe,Cr)3O4, and Cr2O3 formed within 1 h, and the structure retained up to 1000 h. The outward diffusion of Cr3+ was effectively prevented by the CoWO4 layer. In the oxide, Co and W exist as divalent and hexavalent ions respectively, and there is no trivalent cation sites or trivalent cation vacancy through which Cr3+ diffuses.

AB - Cobalt–tungsten alloy layer containing 2.4 at% W was electroplated on type 430 stainless steel (Fe–16 mass% Cr), and it was subjected to high-temperature oxidation at 800 °C in Air–3 vol% H2O atmosphere for 1000 h. A five-layered oxide of Co3O4, FeCo2O4, CoWO4, (Co,Fe,Cr)3O4, and Cr2O3 formed within 1 h, and the structure retained up to 1000 h. The outward diffusion of Cr3+ was effectively prevented by the CoWO4 layer. In the oxide, Co and W exist as divalent and hexavalent ions respectively, and there is no trivalent cation sites or trivalent cation vacancy through which Cr3+ diffuses.

KW - A. Stainless steel

KW - B. SEM, XRD

KW - C. High temperature corrosion

UR - http://www.scopus.com/inward/record.url?scp=85042443209&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042443209&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2018.02.026

DO - 10.1016/j.corsci.2018.02.026

M3 - Article

AN - SCOPUS:85042443209

VL - 134

SP - 162

EP - 168

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

ER -