Nos Abonnements
Ressources Électroniques
|
Exemplaires
| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| aucun exemplaire | |||||
Dépouillements
Ajouter le résultat dans votre panierInfluence of MWCNT dispersion on corrosion behaviour of their Mg composites / Q. Li in Materials and corrosion, Vol. 63 N° 5 (Mai 2012)
Titre : Influence of MWCNT dispersion on corrosion behaviour of their Mg composites Type de document : texte imprimé Auteurs : Q. Li, Auteur ; M. C. Turhan, Auteur ; C. A. Rottmair, Auteur Année de publication : 2012 Article en page(s) : pp. 384–387 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : CNT dispersion corrosion magnesium alloys metal matrix composites multiwall carbon nanotubes Résumé : Carbon nanotubes (CNTs) have been demonstrated as good reinforcements to improve mechanical properties of magnesium alloys. This study reports on the influence of CNT dispersion on corrosion behaviour of their Mg composites. Experiments revealed that the corrosion rate is drastically increased by adding CNTs to the magnesium alloy due to galvanic coupling. Moreover, a homogeneous CNT dispersion leads to reduced corrosion resistivity. Surface pre-treatment is also found to be critical for the corrosion performance for both 1 and 5 wt% CNT composites. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201006023/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 384–387[article] Influence of MWCNT dispersion on corrosion behaviour of their Mg composites [texte imprimé] / Q. Li, Auteur ; M. C. Turhan, Auteur ; C. A. Rottmair, Auteur . - 2012 . - pp. 384–387.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 384–387
Mots-clés : CNT dispersion corrosion magnesium alloys metal matrix composites multiwall carbon nanotubes Résumé : Carbon nanotubes (CNTs) have been demonstrated as good reinforcements to improve mechanical properties of magnesium alloys. This study reports on the influence of CNT dispersion on corrosion behaviour of their Mg composites. Experiments revealed that the corrosion rate is drastically increased by adding CNTs to the magnesium alloy due to galvanic coupling. Moreover, a homogeneous CNT dispersion leads to reduced corrosion resistivity. Surface pre-treatment is also found to be critical for the corrosion performance for both 1 and 5 wt% CNT composites. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201006023/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Corrosion of stainless steels in simulated diesel exhaust environment with urea Type de document : texte imprimé Auteurs : J. Nockert, Auteur ; L. Nyborg, Auteur ; M. Norell, Auteur Année de publication : 2012 Article en page(s) : pp. 388–395 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : AES diesel exhaust high temperature corrosion SCR stainless steel urea XPS Résumé : Laboratory exposures have been performed simulating a selective catalytic reduction (SCR) system with urea injection for NOx reduction in diesel exhaust after-treatment. The corrosion behaviour of three ferritic and one austenitic stainless steel was examined using X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). Continuous exposure to condensate did not cause any corrosion. Results show that cyclic interaction between high temperature and condensation aggravates the corrosion compared to isothermal exposure at 450 °C. All ferritic alloys exhibited more or less the same behaviour, while the austenitic steel performed better. In fact, the presence of urea decreased the corrosion compared to the environment without urea. The cyclic samples exposed with urea displayed iron sulphate on the surface. The sulphate appeared to decrease the oxide thickness. A sulphur enrichment in the form of sulphide also occurred in the inner chromium-rich oxides of all cyclically exposed samples, both with and without urea. Thus, sulphidation is presumed to be involved in the corrosion process. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005783/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 388–395[article] Corrosion of stainless steels in simulated diesel exhaust environment with urea [texte imprimé] / J. Nockert, Auteur ; L. Nyborg, Auteur ; M. Norell, Auteur . - 2012 . - pp. 388–395.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 388–395
Mots-clés : AES diesel exhaust high temperature corrosion SCR stainless steel urea XPS Résumé : Laboratory exposures have been performed simulating a selective catalytic reduction (SCR) system with urea injection for NOx reduction in diesel exhaust after-treatment. The corrosion behaviour of three ferritic and one austenitic stainless steel was examined using X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). Continuous exposure to condensate did not cause any corrosion. Results show that cyclic interaction between high temperature and condensation aggravates the corrosion compared to isothermal exposure at 450 °C. All ferritic alloys exhibited more or less the same behaviour, while the austenitic steel performed better. In fact, the presence of urea decreased the corrosion compared to the environment without urea. The cyclic samples exposed with urea displayed iron sulphate on the surface. The sulphate appeared to decrease the oxide thickness. A sulphur enrichment in the form of sulphide also occurred in the inner chromium-rich oxides of all cyclically exposed samples, both with and without urea. Thus, sulphidation is presumed to be involved in the corrosion process. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005783/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Hot dip galvanizing behavior of advanced high strength steel Type de document : texte imprimé Auteurs : F. Li, Auteur ; Liu, H., Auteur ; W. Shi, Auteur Année de publication : 2012 Article en page(s) : pp. 396–400 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : AHSS galvanizability selective oxidation Thermo-Calc Résumé : This work studied the hot dip galvanizing behavior of three advanced high strength steels annealed under different protective atmospheres. The coating quality, surface oxides, and the mechanical property of steel matrix were examined. The experimental results show that annealing atmosphere can influence the galvanizability and thermodynamics calculation can predict the surface selective oxidation. It was shown for the first time in this work that annealing atmosphere may also influence the mechanical property of the steel matrix. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005905/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 396–400[article] Hot dip galvanizing behavior of advanced high strength steel [texte imprimé] / F. Li, Auteur ; Liu, H., Auteur ; W. Shi, Auteur . - 2012 . - pp. 396–400.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 396–400
Mots-clés : AHSS galvanizability selective oxidation Thermo-Calc Résumé : This work studied the hot dip galvanizing behavior of three advanced high strength steels annealed under different protective atmospheres. The coating quality, surface oxides, and the mechanical property of steel matrix were examined. The experimental results show that annealing atmosphere can influence the galvanizability and thermodynamics calculation can predict the surface selective oxidation. It was shown for the first time in this work that annealing atmosphere may also influence the mechanical property of the steel matrix. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005905/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Influence of tensile stress on corrosion behaviour of high-strength galvanized steel bridge wires in simulated acid rain Type de document : texte imprimé Auteurs : W. J. Yang, Auteur ; P. Yang, Auteur ; X. M. Li, Auteur Année de publication : 2012 Article en page(s) : pp. 401–407 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Corrosion Galvanized steel wire Simulated acid rain Tensile stress Résumé : Corrosion behaviour of the high-strength galvanized steel wires under tensile stress was researched by electrochemical polarization and salt spray test (SST) using simulated acid rain as electrolyte. Electrochemical polarization and SST results showed corrosion rate rose significantly with increasing tensile stress; white grains were observed by SEM after polarization, while cellular and dendritic crystals appeared on the rust layer after SST. XRD and TG-DTA results revealed (Zn(OH)2)3 · ZnSO4 · 5H2O was the main corrosion product, and traces of Fe2(SO4)2O · 7H2O, Fe2(SO4)3, Fe2O3 · H2O were also detected. A three-stage corrosion process for the galvanized steel wires during SST was proposed. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005921/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 401–407[article] Influence of tensile stress on corrosion behaviour of high-strength galvanized steel bridge wires in simulated acid rain [texte imprimé] / W. J. Yang, Auteur ; P. Yang, Auteur ; X. M. Li, Auteur . - 2012 . - pp. 401–407.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 401–407
Mots-clés : Corrosion Galvanized steel wire Simulated acid rain Tensile stress Résumé : Corrosion behaviour of the high-strength galvanized steel wires under tensile stress was researched by electrochemical polarization and salt spray test (SST) using simulated acid rain as electrolyte. Electrochemical polarization and SST results showed corrosion rate rose significantly with increasing tensile stress; white grains were observed by SEM after polarization, while cellular and dendritic crystals appeared on the rust layer after SST. XRD and TG-DTA results revealed (Zn(OH)2)3 · ZnSO4 · 5H2O was the main corrosion product, and traces of Fe2(SO4)2O · 7H2O, Fe2(SO4)3, Fe2O3 · H2O were also detected. A three-stage corrosion process for the galvanized steel wires during SST was proposed. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005921/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Corrosion performance and mechanical properties of joined automotive materials Type de document : texte imprimé Auteurs : N. LeBozec, Auteur ; A. LeGac, Auteur ; D. Thierry, Auteur Année de publication : 2012 Article en page(s) : pp. 408–415 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : adhesive bonding automotive clinching corrosion joint strength welding Résumé : The automotive industry envisions that an optimized vehicle in terms of performance and cost can be achieved only by using different materials at different vehicle locations in order to utilize the functionality of the different materials to a full extent. Currently, steel and aluminum are the most important construction materials for the mass production of automotive structure. However, other materials such as magnesium alloys and stainless steel are also used. The use of dissymmetric assemblies of materials in the automotive industry has also led to the development of joining technologies other than spot welding and arc welding such as clinching, adhesive bonding, laser welding, and MIG brazing. However, and despite the development of these new joining technologies, there are still important gaps of knowledge with regards to the corrosion performance of different joint populations using dissymmetric and symmetric materials. Materials commonly used in the automotive industry including steel and aluminum-based susbtrates were assembled with different combinations using various joining techniques in order to evaluate their corrosion performance as well their mechanical properties after cyclic accelerated corrosion tests. The results indicated a relationship between the corrosion inside the confined joint and the decrease of the mechanical properties of the assemblies. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005888/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 408–415[article] Corrosion performance and mechanical properties of joined automotive materials [texte imprimé] / N. LeBozec, Auteur ; A. LeGac, Auteur ; D. Thierry, Auteur . - 2012 . - pp. 408–415.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 408–415
Mots-clés : adhesive bonding automotive clinching corrosion joint strength welding Résumé : The automotive industry envisions that an optimized vehicle in terms of performance and cost can be achieved only by using different materials at different vehicle locations in order to utilize the functionality of the different materials to a full extent. Currently, steel and aluminum are the most important construction materials for the mass production of automotive structure. However, other materials such as magnesium alloys and stainless steel are also used. The use of dissymmetric assemblies of materials in the automotive industry has also led to the development of joining technologies other than spot welding and arc welding such as clinching, adhesive bonding, laser welding, and MIG brazing. However, and despite the development of these new joining technologies, there are still important gaps of knowledge with regards to the corrosion performance of different joint populations using dissymmetric and symmetric materials. Materials commonly used in the automotive industry including steel and aluminum-based susbtrates were assembled with different combinations using various joining techniques in order to evaluate their corrosion performance as well their mechanical properties after cyclic accelerated corrosion tests. The results indicated a relationship between the corrosion inside the confined joint and the decrease of the mechanical properties of the assemblies. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005888/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : A zinc/silicon dioxide composite film: Fabrication and anti-corrosion characterization Type de document : texte imprimé Auteurs : Z. F. Lin, Auteur ; D. Zhang, Auteur ; Y. Wang, Auteur Année de publication : 2012 Article en page(s) : pp. 416–420 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Carbon steel composite film EIS polarization Résumé : A zinc/silicon dioxide composite film has been electrodeposited on carbon steel surface via adding tetraethylorthosilicate (TEOS) in zinc nitrate solution. The advantage of this method is that the metal/inorganic composite film can be fabricated without adding solid particles in solution. Polarization curve results showed that the composite film obtained at a TEOS concentration of 0.012 M had the best corrosion resistance. Electrochemical impedance spectroscopy results indicated that this film had a corrosion protection effect in 3.5 wt% sodium chloride solution for hundreds of hours. This kind of composite film can be potentially applied as anti-corrosion coating for metal corrosion protection. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005974/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 416–420[article] A zinc/silicon dioxide composite film: Fabrication and anti-corrosion characterization [texte imprimé] / Z. F. Lin, Auteur ; D. Zhang, Auteur ; Y. Wang, Auteur . - 2012 . - pp. 416–420.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 416–420
Mots-clés : Carbon steel composite film EIS polarization Résumé : A zinc/silicon dioxide composite film has been electrodeposited on carbon steel surface via adding tetraethylorthosilicate (TEOS) in zinc nitrate solution. The advantage of this method is that the metal/inorganic composite film can be fabricated without adding solid particles in solution. Polarization curve results showed that the composite film obtained at a TEOS concentration of 0.012 M had the best corrosion resistance. Electrochemical impedance spectroscopy results indicated that this film had a corrosion protection effect in 3.5 wt% sodium chloride solution for hundreds of hours. This kind of composite film can be potentially applied as anti-corrosion coating for metal corrosion protection. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005974/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Influence of heat treatment on corrosion behaviour of Al_Zn_Mg_Cu_Zr_Sc alloy Type de document : texte imprimé Auteurs : Y. P. Xiao, Auteur ; Q. L. Pan, Auteur ; W.B. Li, Auteur Année de publication : 2012 Article en page(s) : pp. 421–430 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Al_Zn_Mg_Cu_Zr_Sc alloy exfoliation corrosion heat treatment electrochemical impedance spectroscopy polarization Résumé : Corrosion behaviour of different tempers (namely NA, UA, PA and OA) of Al_Zn_Mg_Cu_Zr_Sc alloy was studied by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), optical microscopy (OM) and transmission electron microscopy (TEM). Over aged (OA) can decrease the susceptibility to exfoliation due to the discontinuous distribution of the η precipitates at the grain boundaries, cause a negative shift of the corrosion potential (Ecorr) and lead to the prolonging of the time of the appearance of two time constants in impedance diagrams. In addition, Al_Zn_Mg_Cu_Zr_Sc alloy with over aged treatment has an enhanced resistance to exfoliation corrosion. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005923/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 421–430[article] Influence of heat treatment on corrosion behaviour of Al_Zn_Mg_Cu_Zr_Sc alloy [texte imprimé] / Y. P. Xiao, Auteur ; Q. L. Pan, Auteur ; W.B. Li, Auteur . - 2012 . - pp. 421–430.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 421–430
Mots-clés : Al_Zn_Mg_Cu_Zr_Sc alloy exfoliation corrosion heat treatment electrochemical impedance spectroscopy polarization Résumé : Corrosion behaviour of different tempers (namely NA, UA, PA and OA) of Al_Zn_Mg_Cu_Zr_Sc alloy was studied by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), optical microscopy (OM) and transmission electron microscopy (TEM). Over aged (OA) can decrease the susceptibility to exfoliation due to the discontinuous distribution of the η precipitates at the grain boundaries, cause a negative shift of the corrosion potential (Ecorr) and lead to the prolonging of the time of the appearance of two time constants in impedance diagrams. In addition, Al_Zn_Mg_Cu_Zr_Sc alloy with over aged treatment has an enhanced resistance to exfoliation corrosion. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005923/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Effect of sulphate reducing bacteria on corrosion of Al_Zn_In_Sn sacrificial anodes in marine sediment Type de document : texte imprimé Auteurs : F. Liu, Auteur ; J. Zhang, Auteur ; S. Zhang, Auteur Année de publication : 2012 Article en page(s) : pp. 431–437 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Metals and alloys corrosion electrochemical impedance spectroscopy (EIS) scanning electron microscopy (SEM) Résumé : Microbiologically influenced corrosion (MIC) of Al_Zn_In_Sn sacrificial anodes in marine sediment was investigated by exposing samples to sulphate reducing bacteria (SRB). Samples exposed to the sterile marine sediment were used as control. The results show that pitting corrosion occurs in both the sterile marine sediment and the SRB-containing marine sediment. However, the corrosion can be increased sharply by the SRB metabolic activity due to the cathodic depolarization effect. In fact, the effect is based on the consumption of hydrogen which probably results in the acceleration of galvanic corrosion between corrosion products and metal substrate. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005955/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 431–437[article] Effect of sulphate reducing bacteria on corrosion of Al_Zn_In_Sn sacrificial anodes in marine sediment [texte imprimé] / F. Liu, Auteur ; J. Zhang, Auteur ; S. Zhang, Auteur . - 2012 . - pp. 431–437.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 431–437
Mots-clés : Metals and alloys corrosion electrochemical impedance spectroscopy (EIS) scanning electron microscopy (SEM) Résumé : Microbiologically influenced corrosion (MIC) of Al_Zn_In_Sn sacrificial anodes in marine sediment was investigated by exposing samples to sulphate reducing bacteria (SRB). Samples exposed to the sterile marine sediment were used as control. The results show that pitting corrosion occurs in both the sterile marine sediment and the SRB-containing marine sediment. However, the corrosion can be increased sharply by the SRB metabolic activity due to the cathodic depolarization effect. In fact, the effect is based on the consumption of hydrogen which probably results in the acceleration of galvanic corrosion between corrosion products and metal substrate. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005955/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Alternative methods for copper corrosion studies in household plumbing systems Type de document : texte imprimé Auteurs : A. Armanious, Auteur ; K Johannsen, Auteur Année de publication : 2012 Article en page(s) : pp. 438–444 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Copper corrosion malachite corrosion testing water kinetics DOC phosphate chlorination Résumé : Copper corrosion poses a serious challenge to the practice of using copper pipes in household plumbing installations. Copper corrosion can cause health, aesthetic and economic problems. Pipe rig experiments have always been used to study copper corrosion. But the long duration of such experiments, which can last for up to six months, makes them tedious and relatively expensive, thereby limiting the progress of copper corrosion research. The purpose of this study is to establish a laboratory scale experimental setup that takes less time and can be used to study the kinetics of the processes involved in copper corrosion. The developed setup offers a promising alternative to studying copper corrosion using experiments that last for just 24 hours. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005796/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 438–444[article] Alternative methods for copper corrosion studies in household plumbing systems [texte imprimé] / A. Armanious, Auteur ; K Johannsen, Auteur . - 2012 . - pp. 438–444.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 438–444
Mots-clés : Copper corrosion malachite corrosion testing water kinetics DOC phosphate chlorination Résumé : Copper corrosion poses a serious challenge to the practice of using copper pipes in household plumbing installations. Copper corrosion can cause health, aesthetic and economic problems. Pipe rig experiments have always been used to study copper corrosion. But the long duration of such experiments, which can last for up to six months, makes them tedious and relatively expensive, thereby limiting the progress of copper corrosion research. The purpose of this study is to establish a laboratory scale experimental setup that takes less time and can be used to study the kinetics of the processes involved in copper corrosion. The developed setup offers a promising alternative to studying copper corrosion using experiments that last for just 24 hours. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005796/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Generation of nanocrystalline NiO particles by solution combustion method and its Zn_NiO composite coating for corrosion protection Type de document : texte imprimé Auteurs : K. G. Chandrappa, Auteur ; T.V. Venkatesha, Auteur ; K.O. Nayana, Auteur Année de publication : 2012 Article en page(s) : pp. 445–455 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Composite coating corrosion heat treatment impedance nanocrystalline nickel oxide TEM XRD Résumé : The nanocrystalline nickel oxide (NiO) particles have been successfully prepared by a simple, fast, economical, and eco-friendly solution-combustion method using Ni(NO3)2· 6H2O (oxidizer) and sugar (dextrose as fuel). The as-prepared compound was calcined for an hour at different temperatures. The synthesized NiO was characterized by XRD, TGA, SEM/EDX, TEM, XPS, FT-IR, and UV–Vis spectral methods. The crystallite sizes of the NiO particles were measured. Rietveld refinement of X-ray data matches the cubic structure with space group of Fm3m (No. 225). The thermal behavior of as-prepared compound was examined. Scanning electron micrographs show uniform cubic like morphology of NiO and its chemical composition was measured. The TEM results reveal that the particle sizes were in the order of 70–80 nm. The red shift was noticed in UV–Vis absorption spectra. As an application part the Zn_NiO composite coating was prepared by electrodeposition method and its corrosion behavior was analyzed by Tafel, impedance and anodic polarization in aggressive medium. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005966/abstract
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 445–455[article] Generation of nanocrystalline NiO particles by solution combustion method and its Zn_NiO composite coating for corrosion protection [texte imprimé] / K. G. Chandrappa, Auteur ; T.V. Venkatesha, Auteur ; K.O. Nayana, Auteur . - 2012 . - pp. 445–455.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 63 N° 5 (Mai 2012) . - pp. 445–455
Mots-clés : Composite coating corrosion heat treatment impedance nanocrystalline nickel oxide TEM XRD Résumé : The nanocrystalline nickel oxide (NiO) particles have been successfully prepared by a simple, fast, economical, and eco-friendly solution-combustion method using Ni(NO3)2· 6H2O (oxidizer) and sugar (dextrose as fuel). The as-prepared compound was calcined for an hour at different temperatures. The synthesized NiO was characterized by XRD, TGA, SEM/EDX, TEM, XPS, FT-IR, and UV–Vis spectral methods. The crystallite sizes of the NiO particles were measured. Rietveld refinement of X-ray data matches the cubic structure with space group of Fm3m (No. 225). The thermal behavior of as-prepared compound was examined. Scanning electron micrographs show uniform cubic like morphology of NiO and its chemical composition was measured. The TEM results reveal that the particle sizes were in the order of 70–80 nm. The red shift was noticed in UV–Vis absorption spectra. As an application part the Zn_NiO composite coating was prepared by electrodeposition method and its corrosion behavior was analyzed by Tafel, impedance and anodic polarization in aggressive medium. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005966/abstract Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
