Modeling of the Effective Elastic and Thermal Properties of Glass-Ceramic Solid Oxide Fuel Cell Seal Materials

Journal Article · Fri May 01 00:00:00 EDT 2009 · Materials & Design, 30(5):1667-1673

DOI:https://doi.org/10.1016/j.matdes.2008.07.014· OSTI ID:985010

Milhans, Jacqueline; Ahzi, Said; Garmestani, Hamid; Khaleel, Mohammad A; Sun, Xin; Koeppel, Brian J

In this study, the effective elastic properties and coefficients of thermal expansion (CTE) of a glass-ceramic were predicted using homogenization techniques. Using G18, a glass-ceramic solid oxide fuel cell (SOFC) sealant as an initial reference material, the effectiveness of different homogenization models was investigated for a two-phase glass-ceramic. The elastic properties and CTEs of the G18 amorphous phase are currently unknown. Thus, estimated values were used as an input to the models. The predictive model offers accurate macroscopic values on both the elastic modulus and the CTE of glass-ceramic materials, providing the estimated amorphous values are reasonable. This model can be used in designing glass-ceramic SOFC seal materials for its specific operation conditions.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 985010
• Report Number(s): PNNL-SA-61841; AA2530000; TRN: US201016%%1708
• Journal Information: Materials & Design, 30(5):1667-1673, Vol. 30, Issue 5; ISSN 0261-3069
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
ELASTICITY
SIMULATION
SOLID OXIDE FUEL CELLS
THERMAL EXPANSION
THERMODYNAMIC PROPERTIES
Effective properties
Glass ceramic
Homogenization