Electrochemical effects of pH value on the corrosion inhibition and microstructure of cerium doped trivalent chromium conversion coating on Zn

Liu, Xiahe; Wang, Mei; Li, Hongxu; Wang, Laibin; Xu, Yi

doi:10.1016/j.corsci.2020.108538

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Morphological and Compositional Characterization Of Coatings1

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Cited by 12 publications

(2 citation statements)

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“…2c, uniformly covers the alloy surface with a featureless deposit which can be encountered in Ce conversion coatings formed for short periods [33]; however, at higher magnification (Fig. 2d), it is possible to observe the dry mud morphology characteristic of this type of coating [36,37,[63][64][65]. The EDS analysis in Fig.…”

Section: Morphological and Compositional Characterization Of Coatingsmentioning

confidence: 89%

Cerium conversion coating and sol-gel coating for corrosion protection of the WE43 Mg alloy

et al. 2022

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Section: Morphological and Compositional Characterization Of Coatingsmentioning

confidence: 89%

Cerium conversion coating and sol-gel coating for corrosion protection of the WE43 Mg alloy

et al. 2022

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“…However, freshly formed chromate-free conversion coatings usually are rich in defects or cracks due to dehydration. [40][41][42][43][44][45][46] The defect areas provide pathways for corrosive electrolyte ingress leading to a significant decrease of the corrosion protection performance of conversion layers. 41 Dehydration usually is inevitable since conversion coatings are formed in an aqueous environment, resulting in water entrapment within the coatings.…”

mentioning

confidence: 99%

The Effect of Ambient Ageing on the Corrosion Protective Properties of a Lithium-Based Conversion Layer

Homborg²,

González-García³

et al. 2023

J. Electrochem. Soc.

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The influence of ageing under ambient conditions on the corrosion protective behaviour of a lithium-based conversion layer on AA2024-T3 was studied. Conversion layers aged at ambient conditions for relatively short times (0 and 4 h) show an initial high degree of corrosion inhibition but a much lower protectiveness after the inhibition stage terminates. Conversion layers with relatively long aging times (24 and 72 h) show a rather stable corrosion resistance which is higher than that of short-time aged samples. It is hypothesized that the freshly-formed conversion layer has trapped a certain amount of lithium ions and water molecules, leading to ongoing and heterogeneous growth of the conversion layer with time under ambient indoor conditions. Moreover, conversion layers with short aging times show early-stage active corrosion protection by lithium-ion release.

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Recycling of photocatalysis-reduced Cr(VI) in metal surface passivation protection

et al. 2022

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Electrochemical effects of pH value on the corrosion inhibition and microstructure of cerium doped trivalent chromium conversion coating on Zn

Cited by 12 publications

References 46 publications

Cerium conversion coating and sol-gel coating for corrosion protection of the WE43 Mg alloy

Cerium conversion coating and sol-gel coating for corrosion protection of the WE43 Mg alloy

The Effect of Ambient Ageing on the Corrosion Protective Properties of a Lithium-Based Conversion Layer

Recycling of photocatalysis-reduced Cr(VI) in metal surface passivation protection

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