Suppression of Cr evaporation by Co electroplating and underlying Cr retention mechanisms for the 22 wt.% Cr containing ferritic stainless steel

Title
Suppression of Cr evaporation by Co electroplating and underlying Cr retention mechanisms for the 22 wt.% Cr containing ferritic stainless steel
Authors
김동익김병규이경우
Keywords
Stainless steel; Oxidation; Electrodeposited films; XRD; TEM
Issue Date
2018-01
Publisher
Corrosion science
Citation
VOL 130-55
Abstract
High temperature oxidation behavior and associated Cr evaporation process of Co electrodeposited 22 wt.% Cr containing ferritic stainless steel designed for the SOFC interconnects was investigated using XRD and post-processed TEM compositional analysis. The electrodeposited Co layer with a thickness of 400 nm lead to a tenfold reduction in the Cr evaporation. This results from not only the prevention of direct exposure of Cr2O3 to the air by Co spinel oxide formation but also the suspension of Cr transport through oxide grain boundaries due to the phase transformation of Co oxide from Co3O4 to MnxCo3-xO4.
URI
http://pubs.kist.re.kr/handle/201004/66779
ISSN
0010-938X
Appears in Collections:
KIST Publication > Article
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