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Sziráki, L.; Cziráki, Á.; Vértesy, Zófia; Kiss, L. F.; Ivanova, V.; Raichevski, G.; Vitková, S.; Marinova, S.; Marinova, Ts.

doi:10.1023/a:1003584420237

Cited by 22 publications

(8 citation statements)

References 7 publications

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“…These results can again be explained in terms of tensile stress inside the coating when the chromate layer is growing. Our results are very close to those reported in the literature [43] on the corrosion rates of GALVALUME and galvanized steel, where it has been mentioned that the performance of Fe-Al-Zn is superior vs Fe-Zn in all three types of environments (marine, industrial, and rural) with a ratio of average corrosion rates of 4.2, 6.2, and 3.4, respectively. through (c) and 12(a) through (c), respectively.…”

Section: Polarization Curvessupporting

confidence: 90%

Synthesis and Characterization of Chromate Conversion Coatings on GALVALUME and Galvanized Steel Substrates

Domínguez‐Crespo

Onofre-Bustamante

Torres‐Huerta

et al. 2009

Metall Mater Trans A

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The morphology, composition, and corrosion performance of chromate conversion coatings (CCCs) formed on GALVALUME (Fe-Al-Zn) and galvanized steel (Fe-Zn) samples have been studied, and different immersion times (0, 10, 30, and 60 seconds) have been compared. The coated surfaces were analyzed using light microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical measurements in a NaCl solution (3 wt pct). The electrochemical measurements were carried out using the polarization resistance, Tafel, and ac impedance methods. A nonuniform growth of the CCCs having a porous morphology and cracks that appear extended to the base metal was observed. The XRD patterns show that the coatings mainly consist of CrO 3 , Cr 2 O 3 , and traces of Cr 2 O 7 À2 . The electrochemical results show that GALVALUME presents a better behavior than that of the galvanized steel alloys at each dipping time. The SEM micrographs show that the galvanized steel treatments resulted in the formation of a more uniform film, but their protection barrier broke down faster than that of the GALVALUME samples in contact with the aggressive media. The samples that underwent the lowest degree of dissolution were those with a dipping time of 30 seconds. The difference in the corrosion protection given by the two substrate types could be attributed to the structural properties, grain size, composition, and roughness, which affect oxygen diffusion.

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Section: Polarization Curvessupporting

confidence: 90%

Synthesis and Characterization of Chromate Conversion Coatings on GALVALUME and Galvanized Steel Substrates

Domínguez‐Crespo

Onofre-Bustamante

Torres‐Huerta

et al. 2009

Metall Mater Trans A

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“…In view of their good properties, they have been proposed as substitutes for other industrial coatings, such as those of toxic cadmium and allergenic nickel [1,2]. Tin-zinc electrodeposition has been investigated using different bath systems [3][4][5][6][7][8][9][10][11], at different pH values and using different complexing agents and additives, in order to replace the contaminant cyanide baths used in industrial processes for tin-zinc alloy plating [12]. In some of these studies [3,6,9] it has been reported that alloy coatings with 20-30% Zn by weight have the best mechanical and corrosion protection properties.…”

Section: Introductionmentioning

confidence: 99%

Tin–zinc electrodeposition from sulphate–tartrate baths

Guaus

Torrent‐Burgués

2005

Journal of Electroanalytical Chemistry

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“…The silicatecoated sample has a resistance of 1400 ⍀ cm 2 , which is comparable to values reported for chromate conversion coatings in literature. 7 The results are highly reproducible and the mineral layer gives five times higher resistance than did the untreated zinc surface. Figure 1 presents a comparison of the surface composition of samples prepared with and without applied potential.…”

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confidence: 87%