English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/181570
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Effect of substrate on the microstructure and thermoelectric performances of Sr-doped Ca3Co4O9 thick films

AuthorsTorres, M. A.; Mora Alfonso, Mario; Amaveda, H.; Madre, M. A.; Sotelo, A.
KeywordsCeramics
Oxides
Thick films
Microstructure
Electrical properties
Thermoelectrics
Issue Date2019
PublisherElsevier
CitationCeramics International 45(5): 5431-5435 (2019)
AbstractCa3Co4O9 thermoelectric materials in form of thick films are very promising in practical applications due to their low costs and relatively high performance. In this work, two different suspensions have been used to produce different coatings on Al2O3 polycrystalline substrates with theoretical green thickness of 360 and 2000 µm. Moreover, the effect of substrate has also been investigated using Al2O3 monocrystalline substrates and a 360 µm green thickness. Sintering procedure at 900 °C for 24 h has drastically decreased coating thickness. XRD performed on the coatings surface has shown the formation of small amounts of Ca3Co2O6 secondary phase on the polycrystalline substrates, while it was more abundant, and accompanied by Ca2Co2O5 on the monocrystalline substrates. In spite of the higher secondary phases content, monocrystalline substrates produced a slight grain orientation which led to the highest thermoelectric properties between the samples (0.38 mW/K2m at 800 °C), and very close to the best reported values in the literature.
Publisher version (URL)https://doi.org/10.1016/j.ceramint.2018.11.245
URIhttp://hdl.handle.net/10261/181570
DOI10.1016/j.ceramint.2018.11.245
ISSN0272-8842
E-ISSN1873-3956
Appears in Collections:(ICMA) Artículos
Files in This Item:
File Description SizeFormat 
Manuscript 181570.pdf Embargoed until December 1, 2020408,59 kBAdobe PDFThumbnail
View/Open    Request a copy
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.