Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/19637
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sotelo, A. | pt |
dc.contributor.author | Costa, F. M. | pt |
dc.contributor.author | Ferreira, N. M. | pt |
dc.contributor.author | Kovalevsky, A. | pt |
dc.contributor.author | Ferro, M. C. | pt |
dc.contributor.author | Amaral, V. S. | pt |
dc.contributor.author | Amaral, J. S. | pt |
dc.contributor.author | Rasekh, Sh | pt |
dc.contributor.author | Torres, M. A. | pt |
dc.contributor.author | Madre, M. A. | pt |
dc.contributor.author | Diez, J. C. | pt |
dc.date.accessioned | 2017-12-07T19:19:39Z | - |
dc.date.issued | 2016 | pt |
dc.identifier.issn | 0955-2219 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/19637 | - |
dc.description.abstract | A flexible, adaptable, economical and easily scalable processing route, allowing microstructural control, is presented. It involves classical solid state sintering method and addition of liquid promoting compound. Controlled porosity and high thermoelectric performance have been attained in Ca3Co4O9 by K2CO3 additions, drastically improving the sintering procedure. K2CO3 behaves as transient liquid phase, providing microstructural benefits, vanishing during sintering. Electrical resistivity was improved by enhanced grains connectivity and growth. Significant increase in Seebeck coefficient at high temperatures has been produced while lattice thermal conductivity was unaffected. The best ZT value, estimated at 800 degrees C, assuming the thermal conductivity value at 140 degrees C, is 0.35 for 5 wt.% K2CO3 samples. These values are significantly higher than that obtained in highly-dense textured materials at the same temperature. The results suggest that this approach is very effective for preparing highly -performing Ca3Co4O9-based thermoelectric materials with relatively high porosity to control thermal conductivity. (C) 2015 Elsevier Ltd. All rights reserved. | pt |
dc.language.iso | eng | pt |
dc.publisher | ELSEVIER SCI LTD | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/128712/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147333/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147332/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | TEMPERATURE THERMOELECTRIC PROPERTIES | pt |
dc.subject | SINGLE-CRYSTALS | pt |
dc.subject | TRANSPORT-PROPERTIES | pt |
dc.subject | AG ADDITION | pt |
dc.subject | CERAMICS | pt |
dc.subject | SUBSTITUTION | pt |
dc.subject | ENHANCEMENT | pt |
dc.subject | GROWTH | pt |
dc.subject | FIGURE | pt |
dc.subject | OXIDES | pt |
dc.title | Tailoring Ca3Co4O9 microstructure and performances using a transient liquid phase sintering additive | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 1025 | pt |
degois.publication.issue | 4 | pt |
degois.publication.lastPage | 1032 | pt |
degois.publication.title | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | pt |
degois.publication.volume | 36 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1016/j.jeurceramsoc.2015.11.024 | pt |
dc.identifier.doi | 10.1016/j.jeurceramsoc.2015.11.024 | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Tailoring Ca3Co4O9 microstructure and performances using a transient liquid phase sintering additive_10.1016j.jeurceramsoc.2015.11.024.pdf | 3.59 MB | Adobe PDF |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.