Skip to Main content Skip to Navigation
Journal articles

Texture and Porosity Effects on the Thermal Radiative Behavior of Alumina Ceramics

Abstract : Thermal and optical properties of ceramics are dependent on radiation scattering and cannot be determined by a knowledge of their chemical composition alone, as for single crystals. In this paper, extrinsic effects, such as roughness, porosity, and texture, on the spectral emissivity of alumina ceramics are investigated. Roughness effects have an influence mainly in the opaque zone; an important porosity dependence and the presence of a critical porosity threshold were observed in the semitransparent zone. Furthermore, it was shown that two ceramics with similar total porosities, but with different textures, possess radically different emissivities, showing that grain size, pore size, and spatial repartition of the grains are also crucial for an understanding of the thermal properties of the ceramics.
Complete list of metadatas

Cited literature [16 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-00338246
Contributor : Nathalie Pothier <>
Submitted on : Thursday, November 13, 2008 - 10:49:21 AM
Last modification on : Wednesday, September 25, 2019 - 2:56:01 PM
Long-term archiving on: : Monday, June 7, 2010 - 9:18:40 PM

File

Manuscript_Rozenbaum.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Olivier Rozenbaum, Domingos de Sousa Meneses, Patrick Echegut. Texture and Porosity Effects on the Thermal Radiative Behavior of Alumina Ceramics. International Journal of Thermophysics, Springer Verlag, 2009, 30 (2), pp.580-590. ⟨10.1007/s10765-008-0510-1⟩. ⟨insu-00338246⟩

Share

Metrics

Record views

385

Files downloads

2147