Documents disponibles écrits par cet auteur

Correlation between electrochemical impedance and current distribution of carbon steel under organic coating / D. Kong in Materials and corrosion, Vol. 63 N° 6 (Juin 2012) 

Public ISBD [article]  in Materials and corrosion > Vol. 63 N° 6 (Juin 2012) . - pp. 475–480 Titre : Correlation between electrochemical impedance and current distribution of carbon steel under organic coating Type de document : texte imprimé Auteurs : D. Kong, Auteur ; Y. Wang, Auteur ; W. Zhang, Auteur Année de publication : 2012 Article en page(s) : pp. 475–480 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Current  distribution;  EIS;  organic  coating;  wire  beam  electrode Résumé : The current distribution of carbon steel beneath intact organic coating exposed to 3.5% NaCl solution was investigated by the wire beam electrode (WBE) method. The electrochemical impedance spectroscopy (EIS) of individual electrodes with high current was characterized to analyze the behavior of the coating degradation and metal corrosion at coating/metal interface. The polarity switch of the electrode under the coating was observed. The mechanism of coating degradation and carbon steel substrate corrosion was discussed from a point of electrochemical distribution. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201006035/abstract [article] Correlation between electrochemical impedance and current distribution of carbon steel under organic coating [texte imprimé] / D. Kong, Auteur ; Y. Wang, Auteur ; W. Zhang, Auteur . - 2012 . - pp. 475–480. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 63 N° 6 (Juin 2012) . - pp. 475–480 Mots-clés : Current  distribution;  EIS;  organic  coating;  wire  beam  electrode Résumé : The current distribution of carbon steel beneath intact organic coating exposed to 3.5% NaCl solution was investigated by the wire beam electrode (WBE) method. The electrochemical impedance spectroscopy (EIS) of individual electrodes with high current was characterized to analyze the behavior of the coating degradation and metal corrosion at coating/metal interface. The polarity switch of the electrode under the coating was observed. The mechanism of coating degradation and carbon steel substrate corrosion was discussed from a point of electrochemical distribution. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201006035/abstract

Corrosion of high-velocity oxy-fuel (HVOF) sprayed iron-based amorphous metallic coatings for marine pump in sodium chloride solutions / Y. Wang in Materials and corrosion, Vol. 63 N° 8 (Août 2012) 

Public ISBD [article]  in Materials and corrosion > Vol. 63 N° 8 (Août 2012) . - pp. 685–694 Titre : Corrosion of high-velocity oxy-fuel (HVOF) sprayed iron-based amorphous metallic coatings for marine pump in sodium chloride solutions Type de document : texte imprimé Auteurs : Y. Wang, Auteur ; Y. G. Zheng, Auteur ; W. Ke, Auteur Année de publication : 2013 Article en page(s) : pp. 685–694 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Amorphous  structures;  EIS;  metallic  coatings;  passivity;  polarization;  stainless  steel Résumé : FeCrMoMnWBCSi amorphous metallic coatings (AMCs) were deposited onto the 304 stainless steel (base material of pump impeller operated in sand-containing seawater) by high-velocity oxygen-fuel (HVOF) thermal spray. The preparation, microstructural characteristics, and static corrosion behavior of the AMCs were presented. The microstructure and corrosion behavior of the AMCs were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and electrochemical methods. Melt-spun ribbon and 304 stainless steel were also used for comparison purposes. The results indicated that the AMCs can spontaneously passivate with a wide passive region, and much higher ability to withstand pitting corrosion than that of the 304 stainless steel for the high pitting resistance equivalent value. The passive current density of the AMCs was at least two orders of magnitude higher than the counterpart ribbon, which showed a slightly decreased uniform corrosion resistance of the AMCs due to the incompact structure and porosity. The corrosion resistance of the AMCs increased with the coating thickness and decreased with the concentration of NaCl solution. A stable passivation ability held in the AMCs endowed them suitably used in marine environments. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201106211/abstract [article] Corrosion of high-velocity oxy-fuel (HVOF) sprayed iron-based amorphous metallic coatings for marine pump in sodium chloride solutions [texte imprimé] / Y. Wang, Auteur ; Y. G. Zheng, Auteur ; W. Ke, Auteur . - 2013 . - pp. 685–694. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 63 N° 8 (Août 2012) . - pp. 685–694 Mots-clés : Amorphous  structures;  EIS;  metallic  coatings;  passivity;  polarization;  stainless  steel Résumé : FeCrMoMnWBCSi amorphous metallic coatings (AMCs) were deposited onto the 304 stainless steel (base material of pump impeller operated in sand-containing seawater) by high-velocity oxygen-fuel (HVOF) thermal spray. The preparation, microstructural characteristics, and static corrosion behavior of the AMCs were presented. The microstructure and corrosion behavior of the AMCs were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and electrochemical methods. Melt-spun ribbon and 304 stainless steel were also used for comparison purposes. The results indicated that the AMCs can spontaneously passivate with a wide passive region, and much higher ability to withstand pitting corrosion than that of the 304 stainless steel for the high pitting resistance equivalent value. The passive current density of the AMCs was at least two orders of magnitude higher than the counterpart ribbon, which showed a slightly decreased uniform corrosion resistance of the AMCs due to the incompact structure and porosity. The corrosion resistance of the AMCs increased with the coating thickness and decreased with the concentration of NaCl solution. A stable passivation ability held in the AMCs endowed them suitably used in marine environments. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201106211/abstract

Electrochemical corrosion behavior of plasma sprayed Al2O3-13%TiO2 coatings in aqueous hydrochloric acid solution / Y. Wang in Materials and corrosion, Vol. 61 N° 7 (Juillet 2010) 

Public ISBD [article]  in Materials and corrosion > Vol. 61 N° 7 (Juillet 2010) . - pp. 611–617 Titre : Electrochemical corrosion behavior of plasma sprayed Al2O3-13%TiO2 coatings in aqueous hydrochloric acid solution Type de document : texte imprimé Auteurs : Y. Wang, Auteur ; W. Tian, Auteur ; T. Zhang, Auteur Année de publication : 2010 Article en page(s) : pp. 611–617 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Al2O3-13%TiO2  coatings;  electrochemical  corrosion;  plasma  spray Résumé : One kind of conventional and two kinds of nanostructured Al2O3-13%TiO2 coatings were prepared by plasma spray process. The phase composition and microstructure of coatings were examined by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD). The potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were used to investigate the corrosion behavior of coatings in aqueous hydrochloric acid solution. The results showed that nanostructured coatings had superior corrosion resistance compared to conventional Metco 130 coating. The corrosion resistance of coatings was mainly related to their microstructure and defects density. The EIS measurement for long time immersion in hydrochloric acid solution revealed that the corrosion resistance of coatings decreased with the increasing of immersion time. During the immersion period, electrochemical corrosion mainly occurred on the carbon steel substrate under NiCrAl coatings. In addition, the Al2O3-13%TiO2 coatings were also failed during corrosion in aqueous hydrochloric acid solution. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905335/abstract [article] Electrochemical corrosion behavior of plasma sprayed Al2O3-13%TiO2 coatings in aqueous hydrochloric acid solution [texte imprimé] / Y. Wang, Auteur ; W. Tian, Auteur ; T. Zhang, Auteur . - 2010 . - pp. 611–617. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 61 N° 7 (Juillet 2010) . - pp. 611–617 Mots-clés : Al2O3-13%TiO2  coatings;  electrochemical  corrosion;  plasma  spray Résumé : One kind of conventional and two kinds of nanostructured Al2O3-13%TiO2 coatings were prepared by plasma spray process. The phase composition and microstructure of coatings were examined by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD). The potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were used to investigate the corrosion behavior of coatings in aqueous hydrochloric acid solution. The results showed that nanostructured coatings had superior corrosion resistance compared to conventional Metco 130 coating. The corrosion resistance of coatings was mainly related to their microstructure and defects density. The EIS measurement for long time immersion in hydrochloric acid solution revealed that the corrosion resistance of coatings decreased with the increasing of immersion time. During the immersion period, electrochemical corrosion mainly occurred on the carbon steel substrate under NiCrAl coatings. In addition, the Al2O3-13%TiO2 coatings were also failed during corrosion in aqueous hydrochloric acid solution. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905335/abstract

First-principles calculations of the elastic, phonon and thermodynamic properties of Al12Mg17 / H. Zhang in Acta materialia, Vol. 58 N° 11 (Juin 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 11 (Juin 2010) . - pp. 4012–4018 Titre : First-principles calculations of the elastic, phonon and thermodynamic properties of Al12Mg17 Type de document : texte imprimé Auteurs : H. Zhang, Auteur ; S.L. Shang, Auteur ; Y. Wang, Auteur Année de publication : 2011 Article en page(s) : pp. 4012–4018 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : First-principles  electron  theory  Intermetallic  compounds  Elastic  behavior  Thermodynamics Résumé : The elastic, phonon and thermodynamic properties of Al12Mg17 have been investigated by first-principles calculations. The obtained structural parameters, phonon dispersion curves and the predicted thermodynamic properties for all the phases studied herein agree well with available experimental data. The temperature-dependent single-crystal elastic constants are also predicted along with the polycrystalline aggregate properties, including bulk modulus, shear modulus, Young’s modulus, and Poisson’s ratio. The brittleness of Al12Mg17 that we predict is consistent with experiments, in contrast to the previous calculation showing ductile behavior. Detailed analysis of density of states further explains the present theoretical findings. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645410001655 [article] First-principles calculations of the elastic, phonon and thermodynamic properties of Al12Mg17 [texte imprimé] / H. Zhang, Auteur ; S.L. Shang, Auteur ; Y. Wang, Auteur . - 2011 . - pp. 4012–4018. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 11 (Juin 2010) . - pp. 4012–4018 Mots-clés : First-principles  electron  theory  Intermetallic  compounds  Elastic  behavior  Thermodynamics Résumé : The elastic, phonon and thermodynamic properties of Al12Mg17 have been investigated by first-principles calculations. The obtained structural parameters, phonon dispersion curves and the predicted thermodynamic properties for all the phases studied herein agree well with available experimental data. The temperature-dependent single-crystal elastic constants are also predicted along with the polycrystalline aggregate properties, including bulk modulus, shear modulus, Young’s modulus, and Poisson’s ratio. The brittleness of Al12Mg17 that we predict is consistent with experiments, in contrast to the previous calculation showing ductile behavior. Detailed analysis of density of states further explains the present theoretical findings. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645410001655

Microwave - assisted preparation of bamboo charcoal - based iron - containing adsorbents for Cr(VI) removal / X.J. Wang in Chemical engineering journal, Vol. 174 N° 1 (Octobre 2011) 

Public ISBD [article]  in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp. 326–332 Titre : Microwave - assisted preparation of bamboo charcoal - based iron - containing adsorbents for Cr(VI) removal Type de document : texte imprimé Auteurs : X.J. Wang, Auteur ; Y. Wang, Auteur ; X. Wang, Auteur Année de publication : 2012 Article en page(s) : pp. 326–332 Note générale : Génie chimique Langues : Anglais (eng) Mots-clés : Bamboo  charcoal  Adsorption  Heavy  metal  Drinking  water Résumé : Bamboo charcoal-based, iron-containing adsorbent (Fe–BC) was developed by using bamboo charcoal (BC) as a supporting medium for ferric iron that was impregnated by Fe2(SO4)3 and H2SO4 simultaneous treatment, followed by microwave heating. The low-cost composite was characterized and used as an adsorbent for Cr(VI) removal from water. The results showed that the BET specific surface area, total pore volume, and average mesoporous diameter of Fe–BC all decreased with iron impregnation. As an adsorbent, Fe–BC showed an excellent adsorption capability for Cr(VI), the adsorption process followed the Langmuir model, and the adsorption kinetic followed pseudo-second-order model. The adsorption of Cr(VI) onto Fe–BC was spontaneous and exothermic under the studied conditions. Column adsorption experiment with Fe–BC showed that Cr(VI) could be removed to below 0.05 mg/L within 360 bed volumes at empty bed contact time 2 min when the groundwater containing approximately 0.12 mg/L of Cr(VI) was treated. The spent Fe–BC adsorbent could be readily regenerated for reuse by dilute NaOH solution. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711011028 [article] Microwave - assisted preparation of bamboo charcoal - based iron - containing adsorbents for Cr(VI) removal [texte imprimé] / X.J. Wang, Auteur ; Y. Wang, Auteur ; X. Wang, Auteur . - 2012 . - pp. 326–332. Génie chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp. 326–332 Mots-clés : Bamboo  charcoal  Adsorption  Heavy  metal  Drinking  water Résumé : Bamboo charcoal-based, iron-containing adsorbent (Fe–BC) was developed by using bamboo charcoal (BC) as a supporting medium for ferric iron that was impregnated by Fe2(SO4)3 and H2SO4 simultaneous treatment, followed by microwave heating. The low-cost composite was characterized and used as an adsorbent for Cr(VI) removal from water. The results showed that the BET specific surface area, total pore volume, and average mesoporous diameter of Fe–BC all decreased with iron impregnation. As an adsorbent, Fe–BC showed an excellent adsorption capability for Cr(VI), the adsorption process followed the Langmuir model, and the adsorption kinetic followed pseudo-second-order model. The adsorption of Cr(VI) onto Fe–BC was spontaneous and exothermic under the studied conditions. Column adsorption experiment with Fe–BC showed that Cr(VI) could be removed to below 0.05 mg/L within 360 bed volumes at empty bed contact time 2 min when the groundwater containing approximately 0.12 mg/L of Cr(VI) was treated. The spent Fe–BC adsorbent could be readily regenerated for reuse by dilute NaOH solution. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711011028

Modeling and dynamic characteristic simulation of a proton exchange membrane fuel cell / Jia, J. in IEEE transactions on energy conversion, Vol. 24 N°1 (Mars 2009) 

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Permeability tensor and representative elementary volume of saturated cracked soil / J. H. Li in Canadian geotechnical journal, Vol. 46 N° 8 (Août 2009) 

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Reliability-based design of spread foundations by Monte Carlo simulations / Y. Wang in Géotechnique, Vol. 61 N° 8 (Août 2011) 

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Shearing of γ′ precipitates by a〈1 1 2〉 dislocation ribbons in Ni-base superalloys / V.A. Vorontsov in Acta materialia, Vol. 58 N° 12 (Juillet 2010) 

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A zinc/silicon dioxide composite film: Fabrication and anti-corrosion characterization / Z. F. Lin in Materials and corrosion, Vol. 63 N° 5 (Mai 2012) 

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