Thermochemical Compatibility of a Seal Glass with Different Solid Oxide Cell Components
Abstract:Thermochemical compatibility of an aluminosilicate glass (SABS-0) with Crofer 22 APU, nickel, and NiTiHf alloy has been studied for solid oxide cell use. Local SABS-0 devitrification occurs near the interfaces of Crofer 22 APU/SABS-0 and Ni/SABS-0 samples. But extensive SABS-0 devitrification is observed at the NiTiHf/SABS-0 interface. The SABS-0 elements diffuse a few microns into the Crofer 22 APU alloy and the nickel, or vice versa. But the SABS-0 and NiTiHf elements diffuse into each other at ∼25 m. The SABS-0 glass is thermochemically compatible with the Crofer 22 APU and the nickel but not with the NiTiHf alloy.
Document Type: Research Article
Affiliations: Department of Materials Science and Engineering, Virginia Polytechnic Institute and State University,Blacksburg, Virginia 24061
Publication date: January 1, 2010