CHAPTER 6 Development of SOFC Interconnect Stainless Steels

Author:

Chevalier Sébastien1,Combemale Lionel1,Popa Ioana1,Chandra-ambhorn Somrerk2,Chandra-ambhorn Walairat3,Promdirek Piyorose2,Wongpromrat Patthranit3

Affiliation:

1. Université de Bourgogne Franche-Comté

2. King Mongkut’s University of Technology North Bangkok

3. King Mongkut’s Institute of Technology Ladkrabang

Abstract

The chapter introduces components and working principle of solid oxide fuel cells (SOFCs). It is followed by the explanation on the choices of materials focussing on ferritic stainless steels. The review is further made on the required properties of these steels, i.e. low oxidation rate, low chromium species volatilisation rate, high electrical conductivity and good scale adhesion. For the oxidation aspect, the behaviour of stainless steel interconnect in cathode, anode (hydrogen and biogas), and dual atmospheres are described. Surface modification by pre-oxidation and coatings to improve the oxide electrical conductivity and to reduce chromium species volatilisation is finally reviewed.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics

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