Effect of tantalum film on corrosion behaviour of AA6061 aluminium alloy in hydrochloric acid- and chloride-containing solutions

Wang, X. H.; Zhong, Shiyu; Song, Yeong-Jong; Liu, H.; Huang, Ailing; Hu, Qiao-gang; Wang, G. R.; Chai, Sensen

doi:10.1080/00202967.2020.1802930

Cited by 9 publications

(1 citation statement)

References 29 publications

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“…Corrosion measurements.-The samples were immersed in 3.5 wt.% NaCl solution (which was often used to stimulate the chloridecontaining under-well environment in engineering fields 13,25,26 ) at 25 °C for 48 h. The corrosion products were removed by pickling in chromic acid (200 g l −1 CrO 3 + 2 g l −1 AgNO 3 , which only removes the Mg(OH) 2 and has ignorable influence on metallic Mg 27 ) at room temperature for 5-10 min. The mass changes of samples before and after immersion were then calculated.…”

Section: Methodsmentioning

confidence: 99%

Enhanced Degradability of Mg-2Gd Alloy by Alloying Cu

Zhong¹,

Xu²,

Zhou³

et al. 2021

J. Electrochem. Soc.

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To obtain alloys with both high degradability and plasticity used in the petroleum industry, 0.25, 0.5, 0.75 and 1.0 wt.% Cu were added into Mg-2Gd alloy. With Cu addition, finer grain size, precipitation of Mg2Cu, and variations of crystal orientation were observed. Regardless of the good mechanical properties gained by alloying Cu, the degradation rate was obviously increased in this study. The corrosion rate and I corr of Mg-2Gd were 13.0 ± 0.1 mm·y−1 and 1.04 × 10−4 A·cm−2, respectively, while those value of Mg-2Gd-1Cu increased to 226.4 ± 6.1 mm·y−1 and 3.42 × 10−4 A·cm−2, respectively. We confirmed by scanning Kelvin probe force microscopy and scanning electron microscope with electron backscatter diffraction detector that profuse second phases (mainly Mg2Cu), refinement of grain size, and weakened rare earth texture contributed to the lower corrosion resistance.

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Section: Methodsmentioning

confidence: 99%

Enhanced Degradability of Mg-2Gd Alloy by Alloying Cu

Zhong¹,

Xu²,

Zhou³

et al. 2021

J. Electrochem. Soc.

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Corrosion behavior of a newly developed high strength aluminum alloy with high magnesium content under simulated seawater environment

Liu

Xie

et al. 2022

Materials & Corrosion

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AMg61 (Al-6.2% Mg), a novel form of high-strength, high-magnesium-content aluminum alloy, has been developed for specific maritime engineering in recent years, while its corrosion behavior in seawater is still unknown. Therefore, the corrosion behavior of AMg61 in the simulated seawater was investigated herein, using a weight-loss test and different electrochemical measurements. In addition, corrosion morphology and chemical contents were characterized by metallography, scanning electron microscopy, and energydispersive spectroscopy. The results demonstrated that intergranular corrosion and microcracks developed first in the second phase of AMg61, followed by pitting corrosion. The matrix of AMg61, on the other hand, exhibited a uniform and exfoliation corrosion. The corrosion rate gradually decreased over time.

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