Abstract
For the purpose of thermal engineering applications, thermal radiation phenomena of surfaces of chromium and palladium in a high-temperature air-oxidation process on the basis of simultaneous measurements of spectra of normal incidence hemispherical reflectance and normal emittance in the near-ultraviolet through infrared region are investigated. As the results of the spectral measurements, clear radiation interference is observed even in the spectra of the hemispherical reflectance of a rough-finished chromium surface in the oxidation process as well as in the spectra of the normal reflectance of a specular-finished surface. The relation between the chemical reactions of oxidation and reduction of a palladium surface in the 1000 K to 1100 K range and the radiation characteristics are analyzed based on the temperature hysteresis of radiation spectra and the reaction rates of oxidation and reduction. A switching function of radiation characteristics of palladium accompanied by the oxidation and reduction reactions is suggested to be applicable for engineering applications.
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Abbreviations
- A N :
-
Normal incidence absorptance (= 1 − R NH)
- d :
-
Average thickness of film, m
- n :
-
Index of refraction
- R NH :
-
Normal incidence hemispherical reflectance
- R NN :
-
Normal incidence specular reflectance (specular reflection component of hemispherical reflectance R NH)
- t :
-
Time after the start of heating, s
- T :
-
Surface temperature, K
- ε N :
-
Normal emittance
- λ:
-
Wavelength of radiation in vacuum, m
- λ(1) :
-
Wavelength of the valley of oscillation of the first-order interference in R NH spectrum, m
- λ(2) :
-
Wavelength of the valley of oscillation of the second-order interference in R NH spectrum, m
- σ :
-
Root-mean-square roughness, m
- H:
-
Hemispherical reflection
- N:
-
Normal (15° direction in measurement) incidence, reflection, and emission
References
Makino T., Wakabayashi H.: Int. J. Thermophys. 31, 2283 (2010)
Makino T., Sotokawa O., Iwata Y.: Int. J. Thermophys. 9, 1121 (1988)
Roundhill D.M.: McGraw-Hill Encyclopedia of Science and Technology, pp. 761–762. 10th edn. McGraw-Hill, New York (2007)
Albert H.J.: Encyclopedia of Science and Technology McGraw-Hill/Kodansha, vol. 14, pp. 384–385. Kodansha, Tokyo (1977) (in Japanese)
H. Tsujimura, H. Murata, T. Makino, in Proceedings of the 11th Japan Symposium on Thermophysical Properties (1990), pp. 51–54 (in Japanese)
Makino T., Kawasaki H., Kunitomo T.: Bull. JSME 25, 804 (1982)
A. Borghesi, A. Piaggi, in Handbook of Optical Constants of Solids II, ed. by E.D. Palik (Academic Press, San Diego, 1998), pp. 469–476
Wakabayashi H., Makino T.: Meas. Sci. Technol. 12, 2113 (2001)
Siegel R., Howell J.R.: Thermal Radiation Heat Transfer, 3rd edn. pp. 47–91. Taylor & Francis, Bristol (1992)
H. Wakabayashi, T. Makino, in The 2007 ASME-JSME Thermal Engineering Conference and Summer Heat Transfer Conference (HT2007), CD-ROM (2007), No. HT2007-32327
T. Makino, H. Wakabayashi, in International Heat Transfer Conference (IHTC14), CD-ROM (2010), No. IHTC14-22718
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Wakabayashi, H., Makino, T. Thermal Radiation Phenomena of Surfaces of Chromium and Palladium in a High-Temperature Environment. Int J Thermophys 32, 2112–2126 (2011). https://doi.org/10.1007/s10765-011-1104-x
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DOI: https://doi.org/10.1007/s10765-011-1104-x