dc.contributor.author | Kanas, Nikola | |
dc.contributor.author | Singh, Sathya Prakash | |
dc.contributor.author | Rotan, Magnus | |
dc.contributor.author | saleemi, Mohsin | |
dc.contributor.author | Bittner, Michael | |
dc.contributor.author | Feldhoff, Armin | |
dc.contributor.author | Norby, Truls Eivind | |
dc.contributor.author | Wiik, Kjell | |
dc.contributor.author | Grande, Tor | |
dc.date.accessioned | 2018-02-05T08:32:42Z | |
dc.date.available | 2018-02-05T08:32:42Z | |
dc.date.created | 2018-02-02T20:47:40Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Journal of the European Ceramic Society. 2018, 38 1592-1599. | nb_NO |
dc.identifier.issn | 0955-2219 | |
dc.identifier.uri | http://hdl.handle.net/11250/2482505 | |
dc.description.abstract | Due to high figure of merit, Ca3Co4-xO9+δ (CCO) has potential as p-type material for high-temperature thermoelectrics. Here, the influence of processing including solid state sintering, spark plasma sintering and post-calcination on stability, microstructure and thermoelectric properties is reported. By a new post-calcination approach, single-phase materials were obtained from precursors to final dense ceramics in one step. The highest zT of 0.11 was recorded at 800 °C for CCO with 98 and 72 % relative densities. In situ high-temperature X-ray diffraction in air and oxygen revealed a higher stability of CCO in oxygen ( ̴ 970 °C) than in air ( ̴ 930 °C), with formation of Ca3Co2O6 which also showed high stability in oxygen, even at 1125 °C. Since achievement of phase pure high density CCO by post-calcination method in air is challenging, the phase stability of CCO in oxygen is important for understanding and further improvement of the method. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Influence of processing on stability, microstructure and thermoelectric properties of Ca3Co4-xO9+δ | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.pagenumber | 1592-1599 | nb_NO |
dc.source.volume | 38 | nb_NO |
dc.source.journal | Journal of the European Ceramic Society | nb_NO |
dc.identifier.doi | 10.1016/j.jeurceramsoc.2017.11.011 | |
dc.identifier.cristin | 1561442 | |
dc.relation.project | Norges forskningsråd: 228854 | nb_NO |
dc.description.localcode | © 2017. This is the authors’ accepted and refereed manuscript to the article. Locked until 6.11.2019 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | nb_NO |
cristin.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |