Low-temperature sintering of Ba(Zr,Y)O3-based proton conducting oxides using BaO-CuO eutectic flux as sintering aid

Title
Low-temperature sintering of Ba(Zr,Y)O3-based proton conducting oxides using BaO-CuO eutectic flux as sintering aid
Authors
이해원김병국이종호손지원윤경중최성민안혁순Mridula Biswas
Keywords
Sintering; Yttria-doped bariumzirconate; Flux; Electrolyte; Proton-conductingfuelcell
Issue Date
2016-06
Publisher
Ceramics international
Citation
VOL 42, NO 8, 10476-10481
Abstract
The major barrier to the practical application of Ba(Zr,Y)O3 (BZY) as an electrolyte material for proton-conducting fuel cells (PCFCs) lies in its extremely inferior sintering characteristics. In this research, flux composed of 28 mol% BaO and 72 mol% CuO was employed as a novel sintering aid for BZY. Incorporation of nano-crystalline BaO– CuO flux, with a eutectic point of 890 °C, remarkably enhanced the sintering behavior of BZY due to the formation of a transient liquid phase, and a relative density of up to 97% of the theoretical density was obtained at 1300 °C with a short soaking time of 2 h.
URI
http://pubs.kist.re.kr/handle/201004/59158
ISSN
02728842
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KIST Publication > Article
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