Instabilities in doped lanthanum chromite in reducing environments

Book · Sat Dec 30 23:00:00 EST 1995

OSTI ID:242550

Armstrong, T R; Stevenson, J W; Pderson, L R; Raney, P E ^[1]

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1. Pacific Northwest Lab., Richland, WA (United States). Materials Sciences Dept.

Lattice expansion, phase stability, and dimensional stability of interconnect materials, particularly acceptor doped lanthanum chromites, have been examined over a wide range of temperatures and oxygen partial pressures. Reduction of doped lanthanum chromite caused a substantial increase in the unit cell volume. Expansion of the chromites was found to be rapid and reversible showing expansion at temperatures as low as 700 C. The critical oxygen partial pressure at which expansion was observed was found to decrease with decreasing acceptor dopant concentration and with decreasing operation temperature.

• DOE Contract Number: AC06-76RL01830
• OSTI ID: 242550
• Report Number(s): CONF-950683--; ISBN 1-56677-095-5
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
BATTERY SEPARATORS
CALCINATION
CALCIUM OXIDES
CHROMIUM OXIDES
CONNECTORS
CRYSTAL STRUCTURE
DENSITY
DOPED MATERIALS
EXPANSION
EXPERIMENTAL DATA
LANTHANUM OXIDES
MATERIALS
SOLID ELECTROLYTE FUEL CELLS
STRONTIUM OXIDES
SYNTHESIS
THERMAL GRAVIMETRIC ANALYSIS