The kinetics and mechanisms of filiform corrosion on aluminium alloy AA6111

McMurray, H. N.; Holder, Adam; Williams, Geraint; Scamans, G. M.; Coleman, Andrew

doi:10.1016/j.electacta.2010.04.035

Cited by 24 publications

(24 citation statements)

References 38 publications

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“…This phenomenon has been reported on 3000, 5000, 6000 and 8000 series aluminium alloys and can lead to rapid chlorideinduced filiform-like corrosion on organic coated substrates [24][25][26][27][28][29]. It has been proposed that micrograining of the surface layer, induced by abrasion, produces a significant anodic activation compared with the alloy bulk [30,31]. In this work, it can be seen that the aluminium samples even with relatively low purity can resist corrosion, providing that they are not subjected to initial surface abrasion.…”

Section: Zinc and Aluminiummentioning

confidence: 74%

Corrosion Monitoring of Flexible Metallic Substrates for Dye-Sensitized Solar Cells

Watson

Reynolds

Wragg

et al. 2013

International Journal of Photoenergy

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Two techniques for monitoring corrosion within a dye-sensitized solar cell (DSC) system are presented, which enable continuous, high sensitivity, in situ measurement of electrolyte breakdown associated with DSCs fabricated on metals. The first method uses UV/Vis reflectance spectrophotometry in conjunction with encapsulation cells, which incorporate a 25 μm thick electrolyte layer, to provide highly resolved triiodide absorption data. The second method uses digital image capture to extract colour intensity data. Whilst the two methods provide very similar kinetic data on corrosion, the photographic method has the advantage that it can be used to image multiple samples in large arrays for rapid screening and is also relatively low cost. This work shows that the triiodide electrolyte attacks most metals that might be used for structural applications. Even a corrosion resistant metal, such as aluminium, can be induced to corrode through surface abrasion. This result should be set in the context with the finding reported here that certain nitrogen containing heterocyclics used in the electrolyte to enhance performance also act as corrosion inhibitors with significant stabilization for metals such as iron. These new techniques will be important tools to help develop corrosion resistant metal surfaces and corrosion inhibiting electrolytes for use in industrial scale devices.

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Section: Zinc and Aluminiummentioning

confidence: 74%

Corrosion Monitoring of Flexible Metallic Substrates for Dye-Sensitized Solar Cells

Watson

Reynolds

Wragg

et al. 2013

International Journal of Photoenergy

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show abstract

“…Recent studies using a scanning Kelvin probe on mechanically polished AA6111 and AA6016 aluminium alloys confirmed that filiform corrosion is enhanced by the presence of near‐surface deformed layers . In this work, two types of filiform corrosion were identified, termed surface‐active filiform corrosion and successive‐pitting filiform corrosion .…”

Section: Introductionmentioning

confidence: 67%

Influence of near‐surface deformed layers on filiform corrosion of AA3104 aluminium alloy

Liu

Hashimoto

Zhou

et al. 2013

Surface & Interface Analysis

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The filiform corrosion behaviour of hot-rolled AA3104 aluminium alloy was investigated in the presence of a near-surface deformed layer produced by hot rolling. Through detailed examination of microstructure of the near-surface deformed layer and observation of the propagation behaviour of filiform corrosion, it was found that lateral development of surface-active filiform corrosion in the deformed layer was promoted by magnesium oxide in bands and manganese-containing dispersoids. Further, successive-pitting filiform corrosion was observed along the underlying grain boundaries of the bulk alloy, which develops into crystallographic corrosion of the grain interiors.

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“…The corrosion phenomena observed (Fig. 7B and C) is characteristic of filiform-type corrosion in uncoated and coated Al alloys [43][44][45][46][47][48][49], due to electrolyte penetration under the coating, causing its delamination.…”

Section: Corrosion Studies By Localized Techniquesmentioning

confidence: 97%

Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy

et al. 2016

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The kinetics and mechanisms of filiform corrosion on aluminium alloy AA6111

Cited by 24 publications

References 38 publications

Corrosion Monitoring of Flexible Metallic Substrates for Dye-Sensitized Solar Cells

Corrosion Monitoring of Flexible Metallic Substrates for Dye-Sensitized Solar Cells

Influence of near‐surface deformed layers on filiform corrosion of AA3104 aluminium alloy

Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy

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