Title

Microstructure and mechanical properties of Ni/10 mol% Sc2O3-1 mol% CeO2-ZrO2 cermet anode for solid oxide fuel cells

Authors

Authors

Y. Chen; N. Orlovskaya; T. Graule;J. Kuebler

Comments

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Abbreviated Journal Title

J. Eur. Ceram. Soc.

Keywords

Fuel cells; Microstructure; Mechanical properties; Scandia and ceria; stabilized zirconia; YTTRIA-STABILIZED ZIRCONIA; PORE-SIZE MEASUREMENT; NICKEL-BASED ANODES; X-RAY-DIFFRACTION; NI-SCSZ CERMET; CARBON DEPOSITION; RECRYSTALLIZED; SILICONCARBIDE; TEMPERATURE SOFCS; RAMAN-SCATTERING; PHASE-STABILITY; Materials Science, Ceramics

Abstract

The mechanical properties of anode materials play an important role in the reliability and durability of solid oxide fuel cells operating at high temperatures in a reducing environment. In this paper, we produced the results of the mechanical properties investigation of Ni/10 mol% Sc2O3-1 mol% CeO2-ZrO2 cermet anodes. Young's modulus as well as strength and fracture toughness of non-reduced and reduced anodes has been measured, both at room and at high temperatures. High temperature experiments were performed in the reducing environment of forming gas. It is shown that while at 700 degrees C and 800 degrees C, the anode specimens exhibited purely elastic deformation and brittle fracture, a brittle-to-ductile transition occurred for heating above 800 degrees C and the anode deformed plastically at 900 degrees C. Fractography of the anode specimens were performed to identify the fracture modes of anodes tested at different temperatures. (C) 2012 Elsevier Ltd. All rights reserved.

Journal Title

Journal of the European Ceramic Society

Volume

33

Issue/Number

3

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

557

Last Page

564

WOS Identifier

WOS:000313772800011

ISSN

0955-2219

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