Mechanical properties of solid oxide fuel cell glass-ceramic seal at high temperatures
Mechanical properties of solid oxide fuel cell glass-ceramic seal material, G18, are studied at high temperatures. Samples of G18 are aged for either 4h or 100h, resulting in samples with different crystallinity. Reduced modulus, hardness, and time-dependent behavior are measured by nanoindentation. The nanoindentation is performed at room temperature, 550, 650, and 750°C, using loading rates of 5 mN/s and 25 mN/s. Results show a decrease in reduced modulus with increasing temperature, with significant decrease above the glass transition temperature (Tg). Hardness generally decreases with increasing temperature, with a slight increase before Tg for the 4h aged sample. Dwell tests show that creep increases with increasing temperature, but decrease with further aging.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1012512
- Report Number(s):
- PNNL-SA-75418; AA2530000
- Journal Information:
- Journal of Power Sources, 196(13):5599-5603, Journal Name: Journal of Power Sources, 196(13):5599-5603 Journal Issue: 13 Vol. 196; ISSN JPSODZ; ISSN 0378-7753
- Country of Publication:
- United States
- Language:
- English
Similar Records
Statistical Continuum Mechanics Analysis of Effective Elastic Properties in Solid Oxide Fuel Cell Glass–Ceramic Seal Material