Deterioration of paint systems applied on zinc substrates contaminated with soluble salts

Fuente, Daniel de la; Flores, Santiago; Morcillo, M.

doi:10.1016/s0300-9440(01)00145-x

Cited by 8 publications

(1 citation statement)

References 7 publications

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“…Fuente et al 21 also conducted a study in order to verify the influence of soluble salts on zinc surfaces. They contaminated zinc sheets by spraying them with solutions containing different amounts of chlorides and sulfates dissolved in water and methanol.…”

Section: Introductionmentioning

confidence: 99%

The influence of chromate quenching and chloride contamination level on the performance of the painted hot-dipped galvanized steel (duplex system)

Bragagnolo¹,

Panossian²,

Almeida³

et al. 2011

J Coat Technol Res

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The influences of the chromate quenching step and the surface chloride contamination levels of galvanized steel on the performance of duplex systems were studied. Steel panels were galvanized in a commercial steel bath adopting three different postdipping procedures. A comparative study of the galvanized steel, both painted and nonpainted, was performed by electrochemical techniques. It was verified that the chloride contamination level of the galvanized steel surfaces is the main cause of duplex system failures. An explanation for the influence of the chromate quenching on the performance of duplex systems was presented.

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Section: Introductionmentioning

confidence: 99%

The influence of chromate quenching and chloride contamination level on the performance of the painted hot-dipped galvanized steel (duplex system)

Bragagnolo¹,

Panossian²,

Almeida³

et al. 2011

J Coat Technol Res

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Influence of Surface Preparation on the Durability of Repair Coatings for Prepainted Galvanised Steel

LeBozec,

Picot,

LeGac

et al. 2024

Materials & Corrosion

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The performance of repair coating solutions at damaged areas on prepainted galvanised steel was assessed in a cyclic corrosion test and after outdoor exposures in marine atmosphere. Different surface preparations at corroded defects before the application of the repair coatings were tested, for example, water‐jetting, the use of commercial cleaning solutions either acidic or alkaline, a chrome‐free conversion coating and the application of Zn‐Al primer coating. A poorer performance of the repair coatings was observed on damaged and corroded systems compared to damaged‐only panels. This was connected to the presence of remaining chlorides and corrosion products at scribes on corroded panels before repair coating application, which indicated the need for careful surface preparation to minimise the concentration of soluble salts. This was achieved by water‐jetting and the use of alkaline or acidic cleaning which provided satisfying corrosion performance of the repair coatings particularly with a two‐layer system as expected from the thicker layer of the reparation and presence of a primer. The weakest protection was observed when the one‐layer repair coating was applied on a chemically treated surface, which may be related to the weakness of the coating.

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Atmospheric corrosion behavior of paint systems applied on weathered hot-dip galvanized steel

Fuente¹,

Morcillo²,

Simancas³

et al. 2002

J. Coatings Tech.

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Deterioration of paint systems applied on zinc substrates contaminated with soluble salts

Cited by 8 publications

References 7 publications

The influence of chromate quenching and chloride contamination level on the performance of the painted hot-dipped galvanized steel (duplex system)

The influence of chromate quenching and chloride contamination level on the performance of the painted hot-dipped galvanized steel (duplex system)

Influence of Surface Preparation on the Durability of Repair Coatings for Prepainted Galvanised Steel

Atmospheric corrosion behavior of paint systems applied on weathered hot-dip galvanized steel

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