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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 770Decreased Thermal Conductivity of CaMnO3 by...

Decreased Thermal Conductivity of CaMnO₃by Added-CNTs

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Abstract:

The CaMnO₃ compound is synthesized by solid state reaction method. The precursor powder of calcium carbonate (CaCO₃) and manganese oxide (MnO₂) are mixed by ball milling then calcined at 850°C for 10 h and sintering at 1,150 °C for 36 h to obtain the calcium manganese oxide (CaMnO₃) compound. The compound was doped the carbon nanotubes (CNTs) 2%, 4%, 6%, 8% and 10% by molar ratio following the calcinations and sintering process. The morphology and crystallography of the samples are analyzed by the X-ray diffraction (XRD) technique and scanning electron microscope (SEM). The Seebeck coefficient (S), electrical resistivity (ρ), thermal conductivity (κ) and dimensionless figure of merit were anlyzed. It results shown in a good thermoelectric properties after doping CNTs.

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Periodical:

Advanced Materials Research (Volume 770)

Pages:

327-330

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.770.327

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Online since:

September 2013

Authors:

Prapawan Thongsri, Tosawat Seetawan

Keywords:

CaMnO₃, Carbon Nanotube (CN), Thermoelectric Properties

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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