Innovative Seals for Solid Oxide Fuel Cells (SOFC)

Singh, Raj

University of Cincinnati

关键词: Fuels;    Brazing;    Temperature Range 0400-1000 K;    30 Direct Energy Conversion;    Air;   

DOI  :  10.2172/953469
RP-ID  :  None
RP-ID  :  FC26-04NT42227
RP-ID  :  953469

美国|英语

来源: UNT Digital Library

【 摘 要 】

A functioning SOFC requires different type of seals such as metal-metal, metal-ceramic, and ceramic-ceramic. These seals must function at high temperatures between 600--900{sup o}C and in oxidizing and reducing environments of the fuels and air. Among the different type of seals, the metal-metal seals can be readily fabricated using metal joining, soldering, and brazing techniques. However, the metal-ceramic and ceramic-ceramic seals require significant research and development because the brittle nature of ceramics/glasses can lead to fracture and loss of seal integrity and functionality. Consequently, any seals involving ceramics/glasses require a significant attention and technology development for reliable SOFC operation. This final report is prepared to describe the progress made in the program on the needs, approaches, and performance of high temperature seals for SOFC. In particular, a new concept of self-healing glass seals is pursued for making seals between metal-ceramic material combinations, including some with a significant expansion mismatch.