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Titolo:
Property of (La, Ca)CrO3 for interconnect in solid oxide fuel cell (Part 2) - Durability
Autore:
Nishiyama, H; Aizawa, M; Sakai, N; Yokokawa, H; Kawada, T; Dokiya, M;
Indirizzi:
TOTO Ltd, Basic Res Ctr, Chigasaki, Kanagawa 2538577, Japan TOTO Ltd Chigasaki Kanagawa Japan 2538577 gasaki, Kanagawa 2538577, Japan Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan Natl InstAdv Ind Sci & Technol Tsukuba Ibaraki Japan 3058565 8565, Japan Tohoku Univ, Sci Measurements Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan Tohoku Univ Sendai Miyagi Japan 9808577 Ku, Sendai, Miyagi 9808577, Japan Yokohama Natl Univ, Inst Environm Sci & Technol, Hodogaya Ku, Yokohama, Kanagawa 2408501, Japan Yokohama Natl Univ Yokohama Kanagawa Japan 2408501 anagawa 2408501, Japan
Titolo Testata:
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
fascicolo: 6, volume: 109, anno: 2001,
pagine: 527 - 534
SICI:
0914-5400(200106)109:6<527:PO(CFI>2.0.ZU;2-8
Fonte:
ISI
Lingua:
JPN
Soggetto:
DOPED LANTHANUM CHROMITES; ELECTRICAL-CONDUCTIVITY; THERMAL-EXPANSION; CHEMICAL-STABILITY; CALCIUM;
Keywords:
lanthanum calcium chromite; interconnect; stability for annealing treatment; durability; secondary phases;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Nishiyama, H TOTO Ltd, Basic Res Ctr, 2-8-1 Honson, Chigasaki, Kanagawa 2538577, Japan TOTO Ltd 2-8-1 Honson Chigasaki Kanagawa Japan 2538577 Japan
Citazione:
H. Nishiyama et al., "Property of (La, Ca)CrO3 for interconnect in solid oxide fuel cell (Part 2) - Durability", J CERAM S J, 109(6), 2001, pp. 527-534

Abstract

The chemical stability of calcium doped lanthanum chromites as SOFC interconnect was investigated by annealing in air and durability test under the simulated SOFC operating conditions. The effects of calcium content, A-site excess, water vapor pressure and silicon as impurity were checked. Stable electrical conductivity was obtained in SOFC operating test up to 300 h for the samples with lower calcium content and no A-site excess under the silicon-free conditions. The powders calcined at higher temperatures resulted inbetter durability. After the tests, Ca-5(CrO4)(3)O-0.5 was detected in XRDon the surface exposed in oxidizing atmosphere. Silicon component reacts with Ca-rich secondary phase in the samples and form Ca2SiO4, which degradesthe electrical conductivity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/08/20 alle ore 23:50:29