Oxygen permeability of perovskite-type BaBi{sub 1{minus}x}La{sub x}O{sub 3{minus}{delta}}

Journal Article · Wed Jul 01 00:00:00 EDT 1998 · Materials Research Bulletin

DOI:https://doi.org/10.1016/S0025-5408(98)00071-3· OSTI ID:638349

Yaremchenko, A A; Kharton, V V; Viskup, A P; Naumovich, E N; Samokhval, V V ^[1]

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1. Belarus State Univ., Minsk (Belarus). Inst. of Physicochemical Problems

Oxygen permeability, electrical conductivity, and thermal expansion of BaBi{sub 1{minus}x}La{sub x}O{sub 3{minus}{delta}} (x = 0, 0.2, and 0.4) perovskite-like solid solutions have been found to decrease with lanthanum content. Thermal expansion coefficients of the ceramics are (11.9--12.8) {times} 10{sup {minus}6} K{sup {minus}1}. Oxygen transport through the BaBi(La)O{sub 3{minus}{delta}} dense ceramic membranes within the membrane thickness range of 0.6 < d < 1.2 mm has been shown to be limited by both bulk ionic conductivity and surface exchange rate.

• OSTI ID: 638349
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 7 Vol. 33; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOM TRANSPORT
BARIUM OXIDES
BISMUTH OXIDES
CHEMICAL COMPOSITION
ELECTRIC CONDUCTIVITY
LANTHANUM OXIDES
OXYGEN
SOLID SOLUTIONS
THERMAL EXPANSION