Chapter 24. Tensile Creep Rupture Behavior of Alumina-Based Polycrystalline Oxide Fibers
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1992 The American Ceramic Society
Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 7/8
How to Cite
Pysher, D. J. and Tressler, R. E. (1994) Tensile Creep Rupture Behavior of Alumina-Based Polycrystalline Oxide Fibers, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313954.ch24
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375174
Online ISBN: 9780470313954
Creep rupture tests were performed on single filaments of an alumina and an alumina-zirconia fiber (Fiber FP and PRD-166) at temperatures from 1150–1250°C and 1150–1300°C, respectively. Creep rates ranged from 5±10−-8 sec−1 (50 MPa, 1150°C) to 3x10−-4 sec−1 (85 MPa, 1300°C) for the alumina-zirconia fiber. Under similar conditions of applied stress and temperature, the creep rates of the alumina fiber were up to four times greater than those of the alumina-zirconia fiber. The apparent activation energies for creep of PRD-166 and Fiber FP were 757 and 588 kJ/mol, respectively, at an applied stress of 100 MPa. At 1200°C, the PRD-166 fiber crept measurably at stresses as low as 11 MPa and, at an applied stress of 100 MPa, was observed to creep at temperatures as low as 1050°C.