High-Temperature Radiative Properties of an Yttria-Stabilized Hafnia Ceramic

The normal spectral emittance of a partially yttria‐stabilized hafnia (YSH) ceramic has been measured by infrared emittance spectroscopy in a spectral range going from 60 to 17 500 cm−1 (0.075–2.2 eV), and up to 2350 K. Using these experimental data, the temperature dependence of the absorption coef...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2011-06, Vol.94 (6), p.1859-1864
Main Authors: del Campo, Leire, De Sousa Meneses, Domingos, Blin, Annie, Rousseau, Benoît, Véron, Emmanuel, Balat-Pichelin, Marianne, Echegut, Patrick
Format: Article
Language:English
Subjects:
Ceramic coatings
Ceramics
Emittance
Engineering Sciences
Hafnia
Hafnium oxide
Infrared radiation
Materials
Mathematical analysis
Optics
Photonic
Spectra
Spectral emittance
Spectrum analysis
Temperature effects
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Summary:The normal spectral emittance of a partially yttria‐stabilized hafnia (YSH) ceramic has been measured by infrared emittance spectroscopy in a spectral range going from 60 to 17 500 cm−1 (0.075–2.2 eV), and up to 2350 K. Using these experimental data, the temperature dependence of the absorption coefficient and the total emittance have been calculated. The physical mechanisms explaining the spectral features of the whole set of spectra are exposed qualitatively. The spectral weight of each contribution is then discussed for interpreting the influence of temperature on the total normal emittance in the range of temperatures (1200–2500 K) where YSH ceramics can be used for their refractory properties (thermal barrier coating, nuclear reactor, thermal protection systems, etc.).
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2010.04336.x