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Short-term oxidation and hot corrosion resistance of a gradient CrN/Cr1−xAlxN coating / M. Zhu in Materials and corrosion, Vol. 61 N° 11 (Novembre 2010) 

Public ISBD [article]  in Materials and corrosion > Vol. 61 N° 11 (Novembre 2010) . - pp. 939–946 Titre : Short-term oxidation and hot corrosion resistance of a gradient CrN/Cr1−xAlxN coating Type de document : texte imprimé Auteurs : M. Zhu, Auteur ; J. J. Xu, Auteur Année de publication : 2011 Article en page(s) : pp. 939–946 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Gradient  CrN/Cr1−xAlxN  coating;  hot-corrosion;  magnetron  sputtering;  oxidation Résumé : A CrN/Cr1−xAlxN coating comprised of an inner layer of CrN and an outer layer of Cr1−xAlxN with a gradient distribution of Al was deposited on two different alloys by a reactive sputtering method. Oxidation and hot-corrosion tests of the gradient CrN/Cr1−xAlxN coating were performed at different temperatures. The phase compositions and morphologies of the as-deposited coating and the corrosion products were investigated by using XRD and SEM/EDS. The results showed that the gradient CrN/Cr1−xAlxN coating exhibited good oxidation resistance at temperatures above 1000 °C owing to the formation of an α-Al2O3-rich oxide scale. The coating possessed good hot-corrosion resistance in molten sulfate because the inner CrN layer could supply enough Cr to form a relatively protective Cr2O3 after the Al2O3-enriched scale failed due to its dissolution in the molten sulfate. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905376/abstract [article] Short-term oxidation and hot corrosion resistance of a gradient CrN/Cr1−xAlxN coating [texte imprimé] / M. Zhu, Auteur ; J. J. Xu, Auteur . - 2011 . - pp. 939–946. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 61 N° 11 (Novembre 2010) . - pp. 939–946 Mots-clés : Gradient  CrN/Cr1−xAlxN  coating;  hot-corrosion;  magnetron  sputtering;  oxidation Résumé : A CrN/Cr1−xAlxN coating comprised of an inner layer of CrN and an outer layer of Cr1−xAlxN with a gradient distribution of Al was deposited on two different alloys by a reactive sputtering method. Oxidation and hot-corrosion tests of the gradient CrN/Cr1−xAlxN coating were performed at different temperatures. The phase compositions and morphologies of the as-deposited coating and the corrosion products were investigated by using XRD and SEM/EDS. The results showed that the gradient CrN/Cr1−xAlxN coating exhibited good oxidation resistance at temperatures above 1000 °C owing to the formation of an α-Al2O3-rich oxide scale. The coating possessed good hot-corrosion resistance in molten sulfate because the inner CrN layer could supply enough Cr to form a relatively protective Cr2O3 after the Al2O3-enriched scale failed due to its dissolution in the molten sulfate. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905376/abstract