Chapter 87. Strength and Fractue Toughness of Ysz/Alumina Composites for Solid Oxide Fuel Cells
- Hua-Tay Lin,
- Mrityunjay Singh
Published Online: 26 MAR 2008
DOI: 10.1002/9780470294741.ch87
Copyright © 2002 The American Ceramic Society
Book Title
26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3
Additional Information
How to Cite
Choi, S. R. and Bansal, N. P. (2008) Strength and Fractue Toughness of Ysz/Alumina Composites for Solid Oxide Fuel Cells, in 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3 (eds H.-T. Lin and M. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294741.ch87
Publication History
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 2002
Book Series:
ISBN Information
Print ISBN: 9780470375785
Online ISBN: 9780470294741
- Summary
- Chapter
- References
Keywords:
- solid-state energy;
- thermal-expansion;
- monoclinic;
- elevated-temperature;
- surface-connected defects
Summary
The 10-mol % ytrria-stabilized zirconia (10-YSZ) composites reinforced with 0 to 30 mol % of alumina were fabricated via hot pressing. Flexure strength and fracture toughness of the composites were determined at ambient temperature and 1000d̀C in air. Both flexure strength and fracture toughness increased with increasing alumina content, regardless of temperature, reaching a maximum at 30 mol% of alumina. Increased fracture toughness (up to 50 to 65 % at both temperatures) through crack deflection was believed to be responsible for enhanced flexure strength.