Electrodeposition of chemically and mechanically protective Al-coatings on AZ91D Mg alloy

Yang, Huihui; Guo, Xingwu; Wu, Guohua; Ding, Wenjiang; Birbilis, Nick

doi:10.1016/j.corsci.2010.09.047

Cited by 82 publications

(64 citation statements)

References 42 publications

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“…The impedance of constant phase element ( ) is expressed by the following equation [42]: (12) Where (Ω -1 s n cm -2 ) is the admittance of CPE, the angular frequency and as the deviation parameter which has been believed by researchers to be inversely proportional to the surface roughness [43]. For the diffusion behavior of the layers prepared in electrolyte A4, another equivalent circuit model, which contained semi-infinite Warburg impedance ( ), was proposed (Fig.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Effect of duty cycle and electrolyte additive on photocatalytic performance of TiO2-ZrO2 composite layers prepared on CP Ti by micro arc oxidation method

Babaei

Dehghanian

Taheri

et al. 2016

Surface and Coatings Technology

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The aim of this work is to discuss the photocatalytic performance of the titania-zirconia porous photocatalyst layers synthesized via micro arc oxidation technique. An attempt was also made to put forward the basic formation mechanism of the layers. Impedance and optical properties of the photocatalyst layers were studied by electrochemical impedance spectroscopy (EIS), Photoluminescence spectroscopy and UV-vis absorption spectroscopy, in order to assess their intrinsic catalytic properties.The results of the EIS were correlated with the microstructural characteristics along with measurements of Methylene Blue (MB) photocatalytic degradation. The results show enhanced photocatalytic activity of TiO 2 -ZrO 2 composite layers compared to pure TiO 2 layer. It was revealed that the photocatalytic activity of the layers prepared at different duty cycles is influenced by characteristics of microdischarge regime imposed by working electrolytes with varying additive concentration. The results of photocatalytic degradation of methylene blue were in good agreement with those obtained from electrochemical analysis.

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Section: Accepted M Manuscriptmentioning

confidence: 99%

Effect of duty cycle and electrolyte additive on photocatalytic performance of TiO2-ZrO2 composite layers prepared on CP Ti by micro arc oxidation method

Babaei

Dehghanian

Taheri

et al. 2016

Surface and Coatings Technology

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“…Asymmetric rolling includes a shear strain during rolling decreasing the texture intensity and enhancing the elongation to failure [5,10,31]. Hence, the aim of the study was to determine the effect of roll rotational speed asymmetry on the quality of bond between individual components of multi-layer Al-Mg-Al sheets and on the refinement of their structure, as against the symmetric rolling process.…”

mentioning

confidence: 99%

“…The techniques used to produce Al cladding layers include: heating Mg-based components in contact with Al powder [8,9], electrodeposition [10], diffusion coating in molten salts [11,12], cold spray coupled with heat treatment [13], physical vapour deposition [14] and laser processing [15,16]. The above-mentioned methods provide an aluminium coating with a maximum thickness of ~10 μm and may result in a porous cladding surface, which might in some instances lead to a worsening of the corrosion resistance [17].…”

mentioning

confidence: 99%

The Influence of the Asymmetric Arb Process on the Properties of Al-Mg-Al Multi-Layer Sheets / Wpływ Asymetrii W Procesie Arb Na Właściwości Wielowarstwowych Blach Al-Mg-Al

Wierzba¹,

Mróz²,

Szota³

et al. 2015

Archives of Metallurgy and Materials

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The paper presents the results of the experimental study of the three-layer Al-Mg-Al sheets rolling process by the ARB method. The tests carried out were limited to single-pass symmetric and asymmetric rolling processes. An Al-Mg-Al package with an initial thickness of 4 mm (1-2-1 mm) was subjected to the process of rolling with a relative reduction of 50%. To activate the shear band in the strip being deformed, an asymmetry factor of av=2 was applied. From the test results, an increase in the tensile strength of the multi-layer Al-Mg-Al sheets obtained from the asymmetric process was observed. Microhardness tests did not show any significant differences in aluminium layer between respective layers of sheets obtained from the symmetric and the asymmetric process. By contrast, for the magnesium layer, an increase in microhardness from 72 HV to 79 HV could be observed for the asymmetric rolling. The analysis of the produced Al-Mg-Al sheets shows that the good bond between individual layers and grain refinement in the magnesium layer contributed to the obtaining of higher mechanical properties in the multi-layer sheets produced in the asymmetric process compared to the sheets obtained from the symmetric process.

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“…Finally, the recycling of coated elements with such layers is not complicated because aluminium is the main alloying element of Mg alloys. The techniques used to produce Al-enriched layers include: heating Mg-based components in contact with Al powder [2][3][4][5], electrodeposition [6], diffusion coating in molten salts [7,8], cold spray coupled with heat treatment [9], physical vapour deposition [10], laser processing [11,12]. Depending on the employed fabrication process and its parameters, the microstructure of the resulted coating may be composed of two continuous layers of intermetallic phases: the outer layer-Al 3 Mg 2 and the inner layer-Mg 17 Al 12, or may have an eutectic structure of (Mg 17 Al 12, phase + solid solution of Al in Mg).…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Deformability of Two-Layer Materials AZ31/Eutectic / Analiza Możliwości Odkształcania Plastycznego Materiału Dwuwarstwowego AZ31/Eutektyka

Mola

Mróz

Szota

et al. 2015

Archives of Metallurgy and Materials

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AnAlysIs of the deformAbIlIty of two-lAyer mAterIAls AZ31/eutectIcAnAlizA możliwości odksztAłcAniA plAstycznego mAteriAłu dwuwArstwowego Az31/eutektykAThe paper present the results of physical simulation of the deformation of the two-layered Az31/eutectic material using the Gleeble 3800 metallurgical processes simulator. The eutectic layer was produced on the Az31 substrate using thermochemical treatment. The specimens of Az31 alloy were heat treated in contact with aluminium powder at 445°C in a vacuum furnace. Depending on the heating time, Al-enriched surface layers with a thickness of 400, 700 and 1100 µm were fabricated on a substrate which was characterized by an eutectic structure composed of the Mg17Al12 phase and a solid solution of aluminium in magnesium. In the study, physical simulation of the fabricated two-layered specimens with a varying thickness of the eutectic layer were deformed using the plane strain compression test at various values of strain rates. The testing results have revealed that it is possible to deform the two-layered Az31/eutectic material at low strain rates and small deformation values.

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Electrodeposition of chemically and mechanically protective Al-coatings on AZ91D Mg alloy

Cited by 82 publications

References 42 publications

Effect of duty cycle and electrolyte additive on photocatalytic performance of TiO2-ZrO2 composite layers prepared on CP Ti by micro arc oxidation method

Effect of duty cycle and electrolyte additive on photocatalytic performance of TiO2-ZrO2 composite layers prepared on CP Ti by micro arc oxidation method

The Influence of the Asymmetric Arb Process on the Properties of Al-Mg-Al Multi-Layer Sheets / Wpływ Asymetrii W Procesie Arb Na Właściwości Wielowarstwowych Blach Al-Mg-Al

Analysis of the Deformability of Two-Layer Materials AZ31/Eutectic / Analiza Możliwości Odkształcania Plastycznego Materiału Dwuwarstwowego AZ31/Eutektyka

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