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Improvement of the properties of AZ91D magnesium alloy by treatment with a molten AlCl3–NaCl salt to form an Mg–Al intermetallic surface layer / Meifeng He in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
[article]
Titre : Improvement of the properties of AZ91D magnesium alloy by treatment with a molten AlCl3–NaCl salt to form an Mg–Al intermetallic surface layer Type de document : texte imprimé Auteurs : Meifeng He, Auteur ; Lei Liu, Auteur ; Yating Wu, Auteur ; Zhixin Tang, Auteur ; Wenbin Hu, Auteur Année de publication : 2009 Article en page(s) : p. 407-411 Note générale : Bibliogr. Langues : Américain (ame) Tags : Magnesium alloy Intermetallic compounds Coatings Corrosion Index. décimale : 667.9 Revêtements et enduits Résumé : A process for surface modification of AZ91D magnesium alloy has been carried out in AlCl3–NaCl molten salts melt at 573 K for 7 h. The process was used to form a diffusion alloying layer on the surface of the sample to improve corrosion resistance. The diffusion alloying layer was mainly composed of Mg–Al intermetallic compounds. The continued immersion test in 5% NaCl solutions displayed that molten salt diffusion-treated specimen had better corrosion resistance compared to the untreated AZ91D specimen. The polarization test indicated that the Mg–Al intermetallic compounds of the layer were an effective corrosion barrier to decrease the corrosion rate for AZ91D magnesium alloy when exposed to 3.5% NaCl solutions. The microhardness values of the Mg–Al intermetallic compounds were higher than those of the substrate. DOI : 10.1007/s11998-008-9132-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9132-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6122
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p. 407-411[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible Electrodeposition behavior of zinc–nickel–iron alloys from sulfate bath / Mortaga M. Abou-Krisha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
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Titre : Electrodeposition behavior of zinc–nickel–iron alloys from sulfate bath Type de document : texte imprimé Auteurs : Mortaga M. Abou-Krisha, Auteur ; S. A. El-Naby, Auteur ; F. H. Assaf, Auteur Année de publication : 2009 Article en page(s) : p. 391-399 Note générale : Bibliogr. Langues : Américain (ame) Tags : Electrodeposition Phase structure Surface morphology Corrosion resistance Ternary Zn–Ni–Fe alloy Index. décimale : 667.9 Revêtements et enduits Résumé : The present work is directed at collecting the properties of Zn–Ni and Zn–Fe alloys in one alloy via the electrodeposition of Zn–Ni–Fe ternary alloy. Electrodeposition of ternary Zn–Ni–Fe alloy was investigated and compared with the characteristics of Zn–Ni electrodeposits. The electrodeposition was performed from a sulfate bath onto a steel substrate. Structural analysis by X-ray diffraction (XRD) method revealed that the Zn–Ni–Fe alloys consisted of a mixture of zinc, and (gamma-Ni2Zn11) and (Fe3Ni2) phases. The study was carried out using electrochemical methods such as cyclic voltammetry and galvanostatic for electrodeposition, while anodic linear polarization resistance and anodic linear sweeping voltammetry techniques were used for the corrosion study. Surface morphology and chemical composition of the deposits were also examined by using scanning electron microscopy and atomic absorption spectroscopy, respectively. It was found that the obtained Zn–Ni–Fe alloy exhibited more preferred surface appearance and better corrosion resistance without adding any organic brighteners to the plating bath in comparison to Zn–Ni alloy that electrodeposited at similar conditions. Results obtained revealed that the increase in corrosion resistance of ternary deposits is not only attributed to the formation of (gamma-Ni2Zn11) phase, but also to iron codeposition and formation of (Fe3Ni2) phase. DOI : 10.1007/s11998-008-9134-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9134-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6120
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p. 391-399[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible