Creep Properties of Solid Oxide Fuel Cell Glass-Ceramic Seal G18

Journal Article · Mon Nov 01 04:00:00 EDT 2010 · Journal of Power Sources, 195(11):3631-3635

DOI:https://doi.org/10.1016/j.jpowsour.2009.12.038· OSTI ID:1001116

Milhans, Jacqueline; Khaleel, Mohammad A; Sun, Xin; Tehrani, Mehran; Al-Haik, Marwan; Garmestani, Hamid

This study utilizes nanoindentation to investigate and measure creep properties of a barium calcium aluminosilicate glass-ceramic used for solid oxide fuel cell seals (SOFCs). Samples of the glassceramic seal material were aged for 5h, 50h, and 100h to obtain different degrees of crystallinity. Instrumented nanoindentation was performed on the samples with different aging times at different temperatures to investigate the strain rate sensitivity during inelastic deformation. The temperature dependent behavior is important since SOFCs operate at high temperatures (800-1000°C). Results show that the samples with higher crystallinity were more resistant to creep, and the creep compliance tended to decrease with increasing temperature, especially with further aged samples.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1001116
• Report Number(s): PNNL-SA-71828; AA2530000
• Journal Information: Journal of Power Sources, 195(11):3631-3635, Journal Name: Journal of Power Sources, 195(11):3631-3635 Journal Issue: 11 Vol. 195; ISSN 0378-7753
• Country of Publication: United States
• Language: English