Reduction in Processing Time in Ca3Co4O9+δ Ceramics through Nanoprecursors Produced by an Easily Scalable and Environmentally Friendly Process

Attrition milling is an easily scalable and environmentally friendly process used to produce Ca3Co4O9+δ nanoprecursors in a relatively short time. Sintered materials produced through the classical solid-state method, involving ball milling, show much larger grain sizes and slightly lower density tha...

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Published inNanomaterials (Basel, Switzerland) Vol. 10; no. 12; p. 2533
Main Authors Amaveda, Hippolyte, Madre, Maria A., Mora, Mario, Torres, Miguel A., Sotelo, Andres
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 17.12.2020
MDPI
Subjects
Ball milling
ceramics
Decomposition
electric properties
Electrical resistivity
Grain size
Grinding mills
Heat conductivity
microstructure
oxides
Power factor
Precursors
Reduction
Seebeck effect
Sintering
Temperature
United States > US
Germany
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Summary:Attrition milling is an easily scalable and environmentally friendly process used to produce Ca3Co4O9+δ nanoprecursors in a relatively short time. Sintered materials produced through the classical solid-state method, involving ball milling, show much larger grain sizes and slightly lower density than those obtained in samples produced from attrition-milled precursors. On the other hand, electrical resistivity has been drastically decreased, accompanied with a slight decrease in the Seebeck coefficient in samples obtained from these attrition-milled precursors. Moreover, the use of an attrition milling process leads to a very important reduction in processing time (around 75%), together with a slight power factor improvement of around 10%, when compared to the classically prepared samples.
Bibliography:ObjectType-Article-1
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ISSN:2079-4991
2079-4991
DOI:10.3390/nano10122533