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XPS and AES studies of UHTC ZrB2-SiC-Si3N4 treated with solar energy

Beche, Eric and Balat-Pichelin, Marianne and Flaud, Valérie and Esvan, Jérôme and Duguet, Thomas and Sciti, Diletta and Alfano, Davide XPS and AES studies of UHTC ZrB2-SiC-Si3N4 treated with solar energy. (2014) Surface and Interface Analysis, 46 (10-11). 817-822. ISSN 0142-2421

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Official URL: http://dx.doi.org/10.1002/sia.5389

Abstract

The microstructure of ultra-high-temperature ceramics based on the ZrB2–SiC composition and a sintering additive (Si3N4) was investigated using XPS and AES techniques. These ZrB2–SiC–Si3N4 materials were treated in air plasma at high temperature (T > 1750 K) in the MESOX facility developed at the PROMES-CNRS laboratory (Moyen d'Essai Solaire d'OXydation for the measurement of atomic oxygen recombination coefficients). The surfaces were characterized before and after the air plasma treatment. Surface modifications were observed and induced by the oxidation process. The elementary composition was determined using AES and XPS. Core level spectroscopy (XPS) was used to determine the atomic composition and the nature of the chemical bonds from the Zr 3d3/2,5/2, Si 2p1/2,3/2, O 1s and C 1s photoelectron peaks. The microstructural analyses revealed the presence of oxide layers: Silica and zirconia compounds were detected at temperatures near 1800 K, and a zirconia compound was mainly detected above 2200 K.

Item Type:Article
Additional Information:Thanks to J. Wiley & Sons editor. The definitive version is available at http://onlinelibrary.wiley.com The original PDF of the article can be found at http://onlinelibrary.wiley.com/doi/10.1002/sia.5389/abstract
HAL Id:hal-01132421
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Consiglio Nazionale delle Ricerche - CNR (ITALY)
Other partners > Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Istituto di Scienza e Tecnologia dei Materiali Ceramici - ISTEC (ITALY)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université de Montpellier 1 (FRANCE)
Other partners > Université de Montpellier 2 (FRANCE)
Other partners > Centro Italiano di Ricerche Aerospaziali - CIRA (ITALY)
Laboratory name:
Funders:
European Commission
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Deposited By: Thomas DUGUET
Deposited On:26 Feb 2015 15:31

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