Comparative study of the corrosion behavior of zinc coatings deposited on low carbon steel substrates

Pistofidis, N.; Vourlias, G.; Chaliampalias, D.; Pavlidou, E.; Stergioudis, G.; Polychroniadis, Efstathios K.

doi:10.1002/sia.2149

Cited by 12 publications

(7 citation statements)

References 8 publications

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“…If the necessary time for the appearance of red rust on the surface of hot dip galvanised coatings in the SSC 26,27 is compared with the data previously reported, zinc thermal sprayed coatings seem to be as resistant as the hot dip galvanised coatings. However, hot dip galvanised coatings are usually much thinner (50-80 mm 2 ).…”

Section: Comparison With Hot Dip Galvanised Coatingsmentioning

confidence: 90%

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Ability of metallic coatings to protect low carbon steels from aqueous corrosion

Vourlias¹,

Pistofidis²,

Stergioudis³

2008

Corrosion Engineering, Science and Technology

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In the present work, strips of steel St-37 were coated with zinc (Zn) using wire flame spraying and with tin (Sn) using plasma spraying. Their corrosion behaviour was examined by exposure in a salt spray chamber. The exposure time ranged from 24 h up to 18 days. The as corroded samples were studied by optical microscopy, scanning electron microscopy and X-ray diffraction, and in the case of zinc coatings, the weight of the corrosion products was also measured. From this research, it was deduced that zinc coatings corrode uniformly and pits are also formed. A layer of different zinc compounds including zinc oxide and hydroxides, hydrated zinc chlorides and hydroxides covers the coating, which has an inhibiting effect on corrosion. However, hot dip galvanised coatings seem to be more resistant probably due to the presence of Fe-Zn phases. Regarding the tin coatings, Sn and Fe oxides and chlorides were detected on the coating surface along with the formation of large cavities. A possible mechanism of internal oxidation (intergranular corrosion) was used to explain these observations. Their performance seems also inferior to that of the hot dip galvanised coatings.

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Section: Comparison With Hot Dip Galvanised Coatingsmentioning

confidence: 90%

“…The corrosion behaviour of every zinc coating (hot dip galvanised, electroplated or CVD) is similar. [19][20][21][22][23][24][25][26][27] Thus, it could be concluded that the particularities of the zinc thermal sprayed coatings do not affect their corrosion performance as far as the corrosion products are concerned.…”

Section: Corrosion Productsmentioning

confidence: 99%

Ability of metallic coatings to protect low carbon steels from aqueous corrosion

Vourlias¹,

Pistofidis²,

Stergioudis³

2008

Corrosion Engineering, Science and Technology

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“…Zn is more electronegative than Fe, so it offers sacrifi cial protection to the underlying steel in corrosive media [1,2]. The corrosion behavior of zinc coating is dependent on many parameters such as; the concen tration of additives, current density, deposit thickness, texture, morphology and the chemical composition of deposits [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…However, no study was found on the corrosion behavior of the phys ical conditions of zinc coating (temperature, stirring speed and coating time) and their optimization. The 1 The article is published in the original. main objective of the optimization is to determine the levels of independent variables without excessively extending the duration of the experiment time when processing a large number of assays [9].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effect of physical conditions of a coating bath on the corrosion behavior of zinc coating using response surface methodology

Zor

Erten

Bingöl

2015

Prot Met Phys Chem Surf

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In this study, to minimize the corrosion rate zinc coatings conditions were optimized using a Box Behnken design combined with response surface methodology. The different electro zinc coatings were obtained by changing three independent variables; the stirring rate (200-600 rpm), temperature of the bath (30-70°C) and the coating time (30-120 min) in 3.5% NaCl solution. The corrosion rate of the obtained zinc coatings was determined using the Tafel polarization method. A quadratic regression equation was derived to predict the responses. The correspondence between the experimental and predicted values ( = 98.55%) demonstrates that the quadratic model was highly significant with 95% confidence levels (α = 0.05). The optimum zinc coating conditions based on the minimization of corrosion rate were; stirring rate 600 rpm, temperature of bath 55°C and a coating time of 50 min for i corr 16.35 μA/cm 2 .

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“…18,19 However only a little information is presented as concerns their anticorrosive performance. 22 The present work deals with systematic research on their corrosion behaviour under accelerated atmospheric corrosion conditions. A salt spray chamber (SSC) was used, which simulates a marine atmosphere free of pollutants.…”

Section: Introductionmentioning

confidence: 99%

On the corrosion mechanism of zinc pack coatings deposited on low carbon steel: results of laboratory tests

Vourlias¹,

Pistofidis²,

Chaliampalias³

et al. 2007

Corrosion Engineering, Science and Technology

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The high environmental impact of zinc hot dip galvanising has led to the investigation of zinc pack cementation as an alternative more environmentally friendly coating technique. The examination of the corrosion behaviour of the zinc pack coatings showed that the main corrosion products are Zn and Fe hydrated chlorides and oxides. However a stress corrosion mechanism controls the pack degradation, while the hot dip galvanised coatings under the same circumstances are mainly attacked through a mechanism of pitting corrosion. Nevertheless, in any case the corrosion resistance of the coatings seems to be the same, as microscopic measurements of the thickness variations showed.

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Comparative study of the corrosion behavior of zinc coatings deposited on low carbon steel substrates

Cited by 12 publications

References 8 publications

Ability of metallic coatings to protect low carbon steels from aqueous corrosion

Ability of metallic coatings to protect low carbon steels from aqueous corrosion

Investigation of the effect of physical conditions of a coating bath on the corrosion behavior of zinc coating using response surface methodology

On the corrosion mechanism of zinc pack coatings deposited on low carbon steel: results of laboratory tests

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