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Title: Electrically conductive material

An electrically conductive material is described for use in solid oxide fuel cells, electrochemical sensors for combustion exhaust, and various other applications possesses increased fracture toughness over available materials, while affording the same electrical conductivity. One embodiment of the sintered electrically conductive material consists essentially of cubic ZrO[sub 2] as a matrix and 6-19 wt. % monoclinic ZrO[sub 2] formed from particles having an average size equal to or greater than about 0.23 microns. Another embodiment of the electrically conductive material consists essentially at cubic ZrO[sub 2] as a matrix and 10-30 wt. % partially stabilized zirconia (PSZ) formed from particles having an average size of approximately 3 microns. 8 figures.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
5450429
Assignee:
ARCH Development Corp., Chicago, IL (United States) PTO; EDB-94-045340
Patent Number(s):
US 5242873; A
Application Number:
PPN: US 7-182370
Contract Number:
W-31109-ENG-38
Resource Relation:
Patent File Date: 18 Apr 1988
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; SOLID ELECTROLYTE FUEL CELLS; MATERIALS; ZIRCONIUM OXIDES; CRYSTAL STRUCTURE; ELECTRIC CONDUCTIVITY; FRACTURE PROPERTIES; CHALCOGENIDES; DIRECT ENERGY CONVERTERS; ELECTRICAL PROPERTIES; ELECTROCHEMICAL CELLS; FUEL CELLS; MECHANICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS; 300503* - Fuel Cells- Materials, Components, & Auxiliaries; 360200 - Ceramics, Cermets, & Refractories