Role of the alloy grain boundaries in the high-temperature oxidation and Cr volatilization of 22 wt% Cr ferritic stainless steel for SOFC applications

Kim, Byung Kyu; Ko, Yoon Seok; Jung, In‐Ho; Han, Heung Nam; Yi, Kyongsu; Kim, Dong Ik

doi:10.1016/j.corsci.2022.110940

Cited by 13 publications

(1 citation statement)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, area-specific resistance (ASR) of FSSs under SOFC cathode conditions is mainly attributed to the Cr 2 O 3 layer; thus, the excessive growth of the Cr 2 O 3 layer also causes high ASR before spallation . Besides, Cr-containing volatile species can be formed from the Cr-rich oxide layer, then causing cathode poisoning …”

Section: Introductionmentioning

confidence: 99%

Fabrication and Oxidation Behavior of the Cu–Fe Spinel Coating for SOFC Steel Interconnect Applications

Pan,

Liu,

Shi

et al. 2024

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Cu−Fe spinel has recently attracted considerable interest as a protective coating for solid oxide fuel cell steel interconnects. In this study, Cu−Fe spinel coatings were deposited on SUS 430 steel substrates via a coating route of the dip-coating process. Oxidation tests were investigated in laboratory air at up to 800 °C for five (5) 24 h (24 h) cycles up to 120 h. The areaspecific resistance (ASR) of the samples was measured by a standard four-probe method. The experimental results indicated that the CuFe 2 O 4 spinel powders with fine grain size were successfully synthesized from the sol−gel method. The oxidation kinetics of Cu−Fe spinel-coated steel obeyed a parabolic law, showing a parabolic rate constant of 1.38 × 10 −14 g 2 cm −4 s −1 . The ASR value of the coated samples was about 11.2 mΩ cm 2 at 800 °C. The Cu−Fe spinel coating improved both the high-temperature oxidation resistance and the electrical conductivity of the steel interconnects.

show abstract

Section: Introductionmentioning

confidence: 99%