Corrosion and time dependent passivation of Al 5052 in the presence of H2O2

Batmanghelich, Farhad; Hariri, Mohiedin Bagheri; Sharifi‐Asl, Samin; Yaghoubinezhad, Yadollah; Mortazavi, Golsa; Seo, Young-Woo

doi:10.1007/s12540-016-5699-0

Cited by 8 publications

(2 citation statements)

References 43 publications

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“…W is Warburg element. The last electrical element usually used to model diffusion processes in an electrochemical system [72,73].…”

Section: 2electrochemical Impedance Studiesmentioning

confidence: 99%

Hg2+ determination by DPASV by using poly (methylene disulfide)/Au nanoparticle/MWCNT modified glassy carbon electrode by differential pulse anodic stripping voltammetry (DPASV) technique

Ghalebi,

Parham,

Shirmardi

2023

J Porous Mater

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In the present work, surface of a glassy carbon electrode (GCE) was modified by a poly (methanedisulphide)/Au-nanoparticles/multiwall carbon nanotubes (PMDS/AuNPs/MWCNT) to improve its ability for the determination of trace mercury cations in polluted water. The produced electrode was characterized with FESEM, HR-TEM, AFM, XRD, and FT-IR techniques. The obtained results proved the successfulness of the modification process and revealed that the process had a significant effect on the morphology of the electrode and its surface roughness. EIS studies demonstrated the improvement of the electrochemical properties of the surface modified sample. Accordingly, the electrical resistance to charge transfer (Rct) of the GCE-based samples decreased from 477.1 Ohm.cm 2 for the bare sample to 83.4 Ohm.cm 2 for the modified-GCE sample. The modified-GCE sample was employed as an ultra-sensitive electrode for determining the concentration of Hg 2+ cation based on DPASV technique. It exhibited linear behaviour for the concentration determination in the range of 5.98×10 -12 M to 1.00×10 -9 M with correlation coefficient of 0.996. Limit of detection (LOD) and limit of quantitation (LOQ) of the method were found 2.73×10 -13 M and 9.19×10 -13 M, respectively.

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“…W is Warburg element. The last electrical element usually used to model diffusion processes in an electrochemical system [72,73].…”

Section: 2electrochemical Impedance Studiesmentioning

confidence: 99%

Hg2+ determination by DPASV by using poly (methylene disulfide)/Au nanoparticle/MWCNT modified glassy carbon electrode by differential pulse anodic stripping voltammetry (DPASV) technique

Ghalebi,

Parham,

Shirmardi

2023

J Porous Mater

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“…Al-5052 alloy is a material that is widely used in marine and chemical-based industries due to a combination of corrosion resistance and mechanical properties such as tensile strength, toughness, fatigue resistance and fracture resistance [1,2]. In addition, Al-5052 alloys have also begun to be widely used in the automotive industry because of their light weight [3].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Crystal Structure and Texture on Al-5052 Rod Processed by ECAP and Post-ECAP Annealing at 100-300 oC

Purawiardi¹,

Astawa

2020

sintek. jurnal. ilm. teknik. mesin

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Equal-channel angular pressing (ECAP) treatment is a method to improve mechanical properties of bulk metals without adding or extracting their alloy elements. The ECAP process can improve severe plastic deformation that will increase mechanical properties such as hardness and modulus of elasticity. The disadvantage of ECAP product is non-uniform mechanical properties. To solve this problem, post-ECAP annealing process can be applied in order to form more uniform mechanical properties. This phenomena should also be caused by the change of crystal structure and texture during this process. However, study of the change of crystal structure and texture during ECAP and followed by annealing process was seldom done. This study aims to try to determine the characteristics of crystal structure and texture of ECAPed and post-ECAP-annealed materials with annealing temperature variation of 0, 100, 200 and 300 o C. Four Al-5052 alloy rods were used as material samples. The results of this study show that annealing process can homogenize the crystal structure of ECAPed Al-5052 rod. On the other hands, the texture characteristics of ECAPed Al-5052 rod becomes more random as an implication of increasing of annealing temperature.

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Corrosion behaviour of the Al-2.1–Mg-1.8–Si alloy in chloride solution

Zheng

Luo

et al. 2019

Bull Mater Sci

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The corrosion behaviours of Al-Mg-Si alloys were studied in different Cl − concentrations by means of scanning electron microscopy, transmission electron microscopy and electrochemical experiments. The results show that the corrosion behaviours of Al-Mg-Si alloys are closely related to the Cl − concentration. With an increase in Cl − concentration, the corrosion rate increases sharply by facilitating the process of chemical and electrochemical reactions. In 2.0 wt.% NaCl solution, slight pitting corrosion occurred around the MgSi phase, but corrosion trenching was not found around the Fe-Mn-Si phase. In 3.5 wt.% NaCl solution, the alloy appeared localized corrosion dominated by intergranular corrosion attack. In 5.0 wt.% NaCl solution, the alloy presented serious overall corrosion, and the passivation platform of the polarization was not obvious. Furthermore, an appropriate corrosion mechanism according to polarization and electrochemical impedance spectroscopy was proposed for the Al-Mg-Si alloy in NaCl solution. In addition, the corrosion rate influenced by different Cl − concentrations was discussed in detail.

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Corrosion and time dependent passivation of Al 5052 in the presence of H2O2

Cited by 8 publications

References 43 publications

Hg2+ determination by DPASV by using poly (methylene disulfide)/Au nanoparticle/MWCNT modified glassy carbon electrode by differential pulse anodic stripping voltammetry (DPASV) technique

Hg2+ determination by DPASV by using poly (methylene disulfide)/Au nanoparticle/MWCNT modified glassy carbon electrode by differential pulse anodic stripping voltammetry (DPASV) technique

Analysis of Crystal Structure and Texture on Al-5052 Rod Processed by ECAP and Post-ECAP Annealing at 100-300 oC

Corrosion behaviour of the Al-2.1–Mg-1.8–Si alloy in chloride solution

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