Effect of heat treatment at 1300°C on W coating prepared by double-glow plasma on carbon/carbon composite / Ying Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 2 (06/2009) . - p. 237-241 Titre : Effect of heat treatment at 1300°C on W coating prepared by double-glow plasma on carbon/carbon composite Type de document : texte imprimé Auteurs : Ying Zhang, Auteur ; Dan Fang, Auteur ; Wangping Wu, Auteur ; Chen Liangbing, Auteur ; Zhaofeng Chen, Auteur Année de publication : 2009 Article en page(s) : p. 237-241 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites à fibres de carbone Revêtements:Peinture Technique des plasmas Index. décimale : 667.9 Revêtements et enduits Résumé : W-coated carbon/carbon composite has been considered as an attractive ITER plasma facing material in fusion devices. In this paper, W coating was prepared on the carbon/carbon composite substrate by double-glow plasma method using pure W as target. Argon was input into the chamber as the plasma and the reactive gas. W-coated carbon/carbon composite was heat-treated in vacuum furnace at 1300°C for 1 h. Phase and microstructure of W coating were examined by X-ray diffraction and scanning electron microscopy, respectively. The chemical composition of W coating was analyzed by energy dispersive spectroscopy. The micro-hardness of the W coating was estimated by nano-indentation instrument. The results indicated that a continuous and dense W-modified layer could be successfully coated on the carbon/carbon composite surface by double-glow plasma method. W coating completely reacted with C to form WC at 1300°C. WC almost completely diffused into the carbon/carbon composite after heat treatment. The great decrease in elemental W on the carbon/carbon composite surface after heat treatment led to a significant reduction in micro-hardness. DOI : 10.1007/s11998-008-9109-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9109-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5624 [article]

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Ir coating prepared on Mo substrate by double glow plasma / Wang Liangbing in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 4 (12/2009)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 4 (12/2009) . - p. 517-522 Titre : Ir coating prepared on Mo substrate by double glow plasma Type de document : texte imprimé Auteurs : Wang Liangbing, Auteur ; Zhaofeng Chen, Auteur ; Pingze Zhang, Auteur ; Wangping Wu, Auteur ; Ying Zhang, Auteur Année de publication : 2009 Article en page(s) : p. 517-522 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 667.9 Revêtements et enduits Résumé : Dense and adherent Ir coating was obtained on the surface of the Mo substrate by double glow plasma, which had a deposition chamber and two cathodes. Argon gas was used as the working gas. The bias voltage of Ir target and Mo substrate were -800 and -300 V, respectively. The chamber pressure was 35 Pa. Microstructure of the Ir coating was observed by scanning electron microscopy. The Ir coating had a polycrystalline structure with preferential growth orientation of (220) crystal plane. The deposition rate was ~3.5 µm/h. The good adhesion resulted from the buffer layer between the Mo substrate and the Ir coating. The buffer layer, a combined Ir and Mo, was formed at the beginning of the deposition. The Mo concentration distributed gradiently along the depth of the buffer layer. DOI : 10.1007/s11998-008-9123-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9123-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7695 [article]

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