Effects of Sintering on the Thermal and Optical Properties of Zinc Oxide Ceramic

Microstructure and composition are factors determining heat transfer in ZnO ceramic materials, which define the performance of the material after Joule heating, generated by electron transport. In this study, photothermal radiometry was applied to investigate the influence of the sintering temperatu...

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Bibliographic Details
Published in:International journal of thermophysics 2018-02, Vol.39 (2), p.1-12, Article 22
Main Authors: Tabasco-Novelo, C., May-Crespo, J., Ramírez-Rincón, J. A., Forero-Sandoval, I. Y., Rodríguez-Gattorno, G., Quintana, P., Alvarado-Gil, J. J.
Format: Article
Language:English
Subjects:
Classical Mechanics
Condensed Matter Physics
Diffuse reflectance spectroscopy
Electron transport
Energy dissipation
Geophysics
Industrial Chemistry/Chemical Engineering
Ohmic dissipation
Optical properties
Physical Chemistry
Physics
Physics and Astronomy
Radiometry
Sintering
Sol-gel processes
Thermal conductivity
Thermal diffusivity
Thermodynamic properties
Thermodynamics
Zinc oxide
Zinc oxides
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Summary:Microstructure and composition are factors determining heat transfer in ZnO ceramic materials, which define the performance of the material after Joule heating, generated by electron transport. In this study, photothermal radiometry was applied to investigate the influence of the sintering temperature, ranging from 800 ∘ C to 1300 ∘ C , by measuring the thermal diffusivity and thermal conductivity at room temperature, of commercial and sol–gel ZnO pellets. Our results show that the values of these thermal properties for both types of ZnO increase when the sintering temperature increases, displaying maximum energy dissipation at 1200 ∘ C . Additionally, the role of the sintering temperature on the optical properties was also analyzed using diffuse reflectance spectroscopy, and from these data the optical band-gap was obtained.
ISSN:0195-928X
1572-9567
DOI:10.1007/s10765-017-2330-7