Prediction of thermal radiative properties (300–1000 K) of La2NiO4+δ ceramics. - Archive ouverte HAL Access content directly
Journal Articles Applied Physics Letters Year : 2010

Prediction of thermal radiative properties (300–1000 K) of La2NiO4+δ ceramics.

Abstract

A multiscale numerical model is developed to predict the thermal radiative properties (TRP) of rough La2NiO4+δ coatings. The model integrates intrinsic and extrinsic contributions related to the chemical composition and the texture, respectively. High-temperature infrared reflectivity and thermogravimetric measurements on a La2NiO4+δ single crystal make it possible to understand the role of the excess oxygen in the intrinsic TRP. We show that dense ceramics with thicknesses higher than 4 μm are optically thick, and that one can adjust the surface roughness parameters to predict their TRP.

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Dates and versions

hal-03550383 , version 1 (01-02-2022)

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Minh Tri Ta, Julien-Yves Rolland, Patrick Echegut, Benoit Rousseau, Mustapha Zaghrioui, et al.. Prediction of thermal radiative properties (300–1000 K) of La2NiO4+δ ceramics.. Applied Physics Letters, 2010, 97 (18), pp.181917-1. ⟨10.1063/1.3511344⟩. ⟨hal-03550383⟩
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