Corrosion inhibition of aluminium alloys by molybdate ions: A critical review of the chemistry, mechanisms and applications

Milošev, Ingrid

doi:10.1016/j.corsci.2024.111854

Corrosion Science

2024

DOI: 10.1016/j.corsci.2024.111854

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Corrosion inhibition of aluminium alloys by molybdate ions: A critical review of the chemistry, mechanisms and applications

Ingrid Milošev

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Cited by 13 publications

References 100 publications

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Nature‐Inspired Incorporation of Precipitants into High‐Strength Bulk Aluminum Alloys Enables Life‐Long Extraordinary Corrosion Resistance in Diverse Aqueous Environments

Wang,

Yang,

Xiao

et al. 2024

Advanced Materials

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The safe service and wide applications of lightweight high‐strength aluminum alloys are seriously challenged by diverse environmental corrosion, since high strength and corrosion resistance are mutually exclusive for metals while surface protection cannot provide life‐long corrosion resistance. Here, inspired by fish secreting slime from glands to resist external changes, a strategy of incorporating precipitants as the slime into bulk metals using the inner cavity of opened carbon nanotubes (CNTs) as the glands is developed to enable high‐strength aluminum alloys with life‐long superior corrosion resistance. The resulting material has ultrahigh tensile strength (≈700 MPa) and extraordinary corrosion resistance in acidic, neutral and alkaline media. Notably, it has the highest resistance to intergranular corrosion, exfoliation corrosion and stress‐corrosion cracking, compared with all previously reported aluminum alloys, and its corrosion rate is even much lower than that of corrosion‐resistant pure aluminum, which results from the pronounced surface enrichment of precipitants released (secreted) from exposed CNTs forming a protective surface film. Such high corrosion resistance is life‐long and self‐healing due to the on‐demand minimal self‐supply of the precipitants dispersed throughout the bulk material. This strategy can be readily expanded to other aluminum alloys, and could pave the way for developing corrosion‐resistant high‐strength metallic materials.

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Nature‐Inspired Incorporation of Precipitants into High‐Strength Bulk Aluminum Alloys Enables Life‐Long Extraordinary Corrosion Resistance in Diverse Aqueous Environments

Wang,

Yang,

Xiao

et al. 2024

Advanced Materials

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Extraordinary Corrosion Inhibition of Potassium Stannate and Riboflavin Hybrid Additive on the Al Alloy Anode of Alkaline Al‐Air Batteries

Huang,

Guo,

Ritacco

et al. 2024

ChemistrySelect

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Al‐air batteries (AABs) are regarded as a promising future alternative energy source due to their supposedly high energy density. The corrosion of AABs resulting from the hydrogen evolution corrosion and self‐corrosion occurring during their use in alkaline solutions represented a significant obstacle to their development, considerably limiting their commercialization. In this study, we examined the corrosion inhibition efficiency of the hybrid anticorrosive agent composed of potassium stannate (K2SO3) and riboflavin (Rib) when used as an addition in the electrolyte of an alkaline AAB. The experimental results demonstrated that the incorporation of the hybrid corrosion inhibitor leads to an anticorrosion inhibition efficiency of 70.2%, an increase in the discharge specific capacity, and specific energy of the entire battery from 913 mAh g−1 and 1023 Wh kg−1 to 2128 mAh g−1 and 2511 Wh kg−1, respectively. The adsorption behavior of the additives on the surface of the Al alloy was studied using surface characterization techniques such as scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDS), atomic force microscopy (AFM), and X‐ray photoelectron spectroscopy (XPS). It revealed that the incorporation of the hybrid additive leads to the formation of a dense and uniform protective layer on the surface of the Al anode during the discharge process. This film effectively prevents direct contact between the alkaline electrolyte and the Al surface, drastically reducing the formation of possible hydrogen interactions between the electrolyte and the anode. Consequently, the hydrogen evolution reaction (HER) is efficiently inhibited, and the overall performance of the AAB is improved. Thus, this electrolyte regulation strategy presents a novel approach to studying high‐efficiency alkaline AABs.

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Synthesis of a Novel Highly Active NiMoO4 Nanocatalyst for the Sustainable Production of Anhydrous Formaldehyde from the Non-oxidative Dehydrogenation of Methanol at Relatively Low Temperature

Farghal,

Said,

El-Wahab

et al. 2024

Catal Lett

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Corrosion inhibition of aluminium alloys by molybdate ions: A critical review of the chemistry, mechanisms and applications

Cited by 13 publications

References 100 publications

Nature‐Inspired Incorporation of Precipitants into High‐Strength Bulk Aluminum Alloys Enables Life‐Long Extraordinary Corrosion Resistance in Diverse Aqueous Environments

Nature‐Inspired Incorporation of Precipitants into High‐Strength Bulk Aluminum Alloys Enables Life‐Long Extraordinary Corrosion Resistance in Diverse Aqueous Environments

Extraordinary Corrosion Inhibition of Potassium Stannate and Riboflavin Hybrid Additive on the Al Alloy Anode of Alkaline Al‐Air Batteries

Synthesis of a Novel Highly Active NiMoO4 Nanocatalyst for the Sustainable Production of Anhydrous Formaldehyde from the Non-oxidative Dehydrogenation of Methanol at Relatively Low Temperature

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