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Céramiques et composites pour applications en conditions extrêmes dans le nucléaire et le spatial

Abstract : This document obeys a strict plan inherent in all PhD manuscripts passed in Validationof the Assets of Experiment (VAE). After a detailed resume this document first of all,presents a reflexive return on the career i.e., from a work of type project towards anincreasingly strong implication to a research task. After this reflexive return whichmakes it possible to have an overall picture of the progression of the course, asynthesis is proposed, not of total work, but of three fields quite precise andrepresentative of the course of research. This choice was done by seeking a wire ofARIANE which is the chemical nature of the studied ceramics; in this document it isabout carbides and more precisely about SiC, TiC, ZrC, HfC. First of all monolithicceramics for the nuclear applications is approached then, the space applications withthe elaborating of protections against oxidation made by core shell powders finally, thedocument is completed by ceramics infiltrations from an intermetallic material or howit is possible to make ultra refractory ceramics at low temperature. As these works areoriginal they were the object of patents and publications which will be approached inthe third part.
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Alexandre Allemand. Céramiques et composites pour applications en conditions extrêmes dans le nucléaire et le spatial. Matériaux. Université de Bordeaux, 2017. Français. ⟨NNT : 2017BORD0967⟩. ⟨tel-01757012⟩

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