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Corrosion des matériaux de gaine (ODS, alliages V, SiC ... - gedepeon

Corrosion des matériaux de gaine (ODS, alliages V, SiC ... - gedepeon

Corrosion des matériaux de gaine (ODS, alliages V, SiC ... - gedepeon

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Essai Na 500°C – 166 h – [O] < 10 ppmEchantillon <strong>SiC</strong>/<strong>SiC</strong> préfissuré<strong>SiC</strong> CVI fissuréobservé en surface200 µm20 µmRiche en Na ,OFibres émergentes aucontact direct avec Na Matrice : Pénétration du Na dansles fissures pré-existantes Fibres : Présence <strong>de</strong> Na et O auniveau <strong>de</strong> fibres émergentes sur lebord <strong>de</strong> l’échantillon40 µm<strong>SiC</strong> CVI4 µmFibres <strong>SiC</strong>4 µm<strong>SiC</strong> CVICEA/DEN/DPC/SCCME Réunion GEDEPEON-MATINEX 2012

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