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Titolo:
Near-net-shape forming of metallic bipolar plates for planar solid oxide fuel cells by induction plasma spraying
Autore:
Henne, R; Muller, M; Pross, E; Schiller, G; Gitzhofer, F; Boulos, M;
Indirizzi:
Deutsch Zentrum Luft & Raumfahrt, Inst Tech Thermodynam, D-70569 Stuttgart, Deutsch Zentrum Luft & Raumfahrt Stuttgart Germany D-70569 69 Stuttgart, Univ Sherbrooke, Dept Genie Chim, Sherbrooke, PQ J1K 2R1, Canada Univ Sherbrooke Sherbrooke PQ Canada J1K 2R1 erbrooke, PQ J1K 2R1, Canada HC Starck GMBH & Co KG, D-79725 Laufenburg, Germany HC Starck GMBH & Co KG Laufenburg Germany D-79725 25 Laufenburg, Germany
Titolo Testata:
JOURNAL OF THERMAL SPRAY TECHNOLOGY
fascicolo: 1, volume: 8, anno: 1999,
pagine: 110 - 116
SICI:
1059-9630(199903)8:1<110:NFOMBP>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Keywords:
induction plasma deposition; metallic bipolar plate; near-net-shape forming; solid oxide fuel cell; spray angle; vacuum plasma spraying;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Henne, R Deutsch-40,trum Luft & Raumfahrt, Inst Tech Thermodynam, Pfaffenwaldring 38 Deutsch Zentrum Luft & Raumfahrt Pfaffenwaldring 38-40 Stuttgart Germany D-70569
Citazione:
R. Henne et al., "Near-net-shape forming of metallic bipolar plates for planar solid oxide fuel cells by induction plasma spraying", J THERM SPR, 8(1), 1999, pp. 110-116

Abstract

In one of the present designs of solid oxide fuel cells (SOFC), metallic bipolar plates with gas channels on the surface are used, which consist of achromium alloy and are manufactured by a time consuming and costly multistep process. To reduce the production time and costs, attempts were made to develop an alternative near-net-shape production method based on RF-induction plasma spray technology, With this process raw powders, as applied fur the "conventional" sintering route as well as recycled powders from used bipolar plates, have been applied, The process parameters were adapted to bothpowders, and the obtained products mere qualified. The near-net-shape production requires the formation of a gas channel structure already with the spray process using structured substrate, Therefore, different spray angles occur during the deposition process, The influence of the spray angle on the microstructure of the free-standing parts was investigated, The required gas tightness for grooved profiles with relatively large channel depths andwidths can only be achieved using spray angles between 90 degrees and approximately 60 degrees. Then a tilting of the substrate and an adapted designof the gas channel profiles are needed to fulfill the structural requirements for the bipolar plates.

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Documento generato il 28/03/20 alle ore 10:55:38