Thermal degradation mechanism of ferritic alloy (Crofer 22 APU)

Title
Thermal degradation mechanism of ferritic alloy (Crofer 22 APU)
Authors
이해원김병국이종호김형철손지원지호일윤경중박만수김효진안혁순이상혁신지수
Keywords
oxidation; alloy; high temperature corrosion; XRD; SEM
Issue Date
2018-04
Publisher
Corrosion science
Citation
VOL 134-22
Abstract
The oxidation mechanism of Crofer 22 APU, one of the most preferred interconnects for solid oxide fuel cells (SOFCs), was explored in air. Crofer 22 APU showed two-step thermal behavior during thermal exposure, based on the varying growth rate of the chromia scale. The growth rate of the chromia scale abruptly increased at a certain annealed time, suggesting that its formation kinetics changed during thermal exposure. A thickness prediction model for the entire scale of Crofer 22 APU, based on the observed two-step oxidation mechanism, was established using the parabolic rate law.
URI
http://pubs.kist.re.kr/handle/201004/67396
ISSN
0010-938X
Appears in Collections:
KIST Publication > Article
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