Contraction of porous nickel during low temperature oxidation

Y. Morishita, F. Zhao, S. Watanabe, K. Yashiro, T. Kawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Peculiar contraction and creep behavior were investigated with Ni-based anode material upon intermediated temperature oxidation. Volume change of a porous Ni was measured using a laser profilometer in oxidizing atmospheres at elevated temperatures. Contraction occurred in the temperature range around 500°C, and particularly at 473°C, a marked shrinkage of more than 8% was observed. Creep characteristics was tested with a small punch equipment with changing the atmosphere from reducing to oxidizing gases. At 400°C and 500°C, the creep rate dramatically increased when the oxidizing gas was introduced. These results suggest that a reducing atmosphere must be maintained to protect the anode from oxidation in shut-down operation for an anode-supported SOFC.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 16, SOFC 2019
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society Inc.
Pages1979-1984
Number of pages6
Edition1
ISBN (Electronic)9781607688747
DOIs
Publication statusPublished - 2019 Jan 1
Event16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019 - Kyoto, Japan
Duration: 2019 Sep 82019 Sep 13

Publication series

NameECS Transactions
Number1
Volume91
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019
CountryJapan
CityKyoto
Period19/9/819/9/13

ASJC Scopus subject areas

  • Engineering(all)

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    Morishita, Y., Zhao, F., Watanabe, S., Yashiro, K., & Kawada, T. (2019). Contraction of porous nickel during low temperature oxidation. In K. Eguchi, & S. C. Singhal (Eds.), Solid Oxide Fuel Cells 16, SOFC 2019 (1 ed., pp. 1979-1984). (ECS Transactions; Vol. 91, No. 1). Electrochemical Society Inc.. https://doi.org/10.1149/09101.1979ecst