Chemical diffusion of (La,Sr)CoO3 and (La,Sr)FeO3

M. Rekas; T. Bak; Janusz Nowotny; C. C. Sorrell; Y. Zhao; K. Foger; E. R. Vance

doi:10.1023/A:1008926809900

Chemical diffusion of (La,Sr)CoO₃ and (La,Sr)FeO₃

M. Rekas
, T. Bak
, Janusz Nowotny
, C. C. Sorrell
, Y. Zhao
, K. Foger
, E. R. Vance

University of New South Wales
Ceramic Fuel Cells Limited
Australian Nuclear Science and Technology Organisation

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The present work reports equilibration kinetics for (La_0.8,Sr_0.2)CoO₃(LSC) and (La_0.72,Sr_0.18)FeO₃(LSF) in the temperature range 876-1114 K using a gravimetric method. Chemical diffusion determined in this way that depends on oxygen partial pressure, can be expressed by the following temperature dependence at low and high p(O₂), respectively, for LSC: Dchem=8.7×10^-3exp-(58.1±8.5)kJ/mol/RT (cm²s^-1) (1) Dchem=6.2×10^-3exp-(75.4±6.5)kJ/mol/RT (cm²s^-1) (2) and for LSF: Dchem=3.05×10^-5exp-(30.3±2.8)kJ/mol/RT (cm²s^-1) (3) Dchem=6.3×10^-3exp-(82.7±10.2)kJ/mol/RT (cm²s^-1) (4)

Original language	English
Pages (from-to)	691-696
Number of pages	6
Journal	Journal of Materials Science: Materials in Electronics
Volume	11
Issue number	9
DOIs	https://doi.org/10.1023/A:1008926809900
Publication status	Published - 2000
Externally published	Yes

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@article{b36e9f25d4da44699472414cb56a8853,

title = "Chemical diffusion of (La,Sr)CoO3 and (La,Sr)FeO3",

abstract = "The present work reports equilibration kinetics for (La0.8,Sr0.2)CoO3(LSC) and (La0.72,Sr0.18)FeO3(LSF) in the temperature range 876-1114 K using a gravimetric method. Chemical diffusion determined in this way that depends on oxygen partial pressure, can be expressed by the following temperature dependence at low and high p(O2), respectively, for LSC: Dchem=8.7×10-3exp-(58.1±8.5)kJ/mol/RT (cm2s-1) (1) Dchem=6.2×10-3exp-(75.4±6.5)kJ/mol/RT (cm2s-1) (2) and for LSF: Dchem=3.05×10-5exp-(30.3±2.8)kJ/mol/RT (cm2s-1) (3) Dchem=6.3×10-3exp-(82.7±10.2)kJ/mol/RT (cm2s-1) (4)",

author = "M. Rekas and T. Bak and Janusz Nowotny and Sorrell, \{C. C.\} and Y. Zhao and K. Foger and Vance, \{E. R.\}",

year = "2000",

doi = "10.1023/A:1008926809900",

language = "English",

volume = "11",

pages = "691--696",

journal = "Journal of Materials Science: Materials in Electronics",

issn = "0957-4522",

publisher = "Springer New York",

number = "9",

}

TY - JOUR

T1 - Chemical diffusion of (La,Sr)CoO3 and (La,Sr)FeO3

AU - Rekas, M.

AU - Bak, T.

AU - Nowotny, Janusz

AU - Sorrell, C. C.

AU - Zhao, Y.

AU - Foger, K.

AU - Vance, E. R.

PY - 2000

Y1 - 2000

N2 - The present work reports equilibration kinetics for (La0.8,Sr0.2)CoO3(LSC) and (La0.72,Sr0.18)FeO3(LSF) in the temperature range 876-1114 K using a gravimetric method. Chemical diffusion determined in this way that depends on oxygen partial pressure, can be expressed by the following temperature dependence at low and high p(O2), respectively, for LSC: Dchem=8.7×10-3exp-(58.1±8.5)kJ/mol/RT (cm2s-1) (1) Dchem=6.2×10-3exp-(75.4±6.5)kJ/mol/RT (cm2s-1) (2) and for LSF: Dchem=3.05×10-5exp-(30.3±2.8)kJ/mol/RT (cm2s-1) (3) Dchem=6.3×10-3exp-(82.7±10.2)kJ/mol/RT (cm2s-1) (4)

AB - The present work reports equilibration kinetics for (La0.8,Sr0.2)CoO3(LSC) and (La0.72,Sr0.18)FeO3(LSF) in the temperature range 876-1114 K using a gravimetric method. Chemical diffusion determined in this way that depends on oxygen partial pressure, can be expressed by the following temperature dependence at low and high p(O2), respectively, for LSC: Dchem=8.7×10-3exp-(58.1±8.5)kJ/mol/RT (cm2s-1) (1) Dchem=6.2×10-3exp-(75.4±6.5)kJ/mol/RT (cm2s-1) (2) and for LSF: Dchem=3.05×10-5exp-(30.3±2.8)kJ/mol/RT (cm2s-1) (3) Dchem=6.3×10-3exp-(82.7±10.2)kJ/mol/RT (cm2s-1) (4)

UR - https://www.scopus.com/pages/publications/0042186765

U2 - 10.1023/A:1008926809900

DO - 10.1023/A:1008926809900

M3 - Article

AN - SCOPUS:0042186765

SN - 0957-4522

VL - 11

SP - 691

EP - 696

JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 9

ER -

Chemical diffusion of (La,Sr)CoO₃ and (La,Sr)FeO₃

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