Studies on the initial stages of zinc atmospheric corrosion in the presence of chloride

Chen, Y.Y.; Chung, S. C.; Shih, Han C.

doi:10.1016/j.corsci.2005.12.007

Cited by 59 publications

(37 citation statements)

References 55 publications

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“…Comparison of the FTIR results showed that the standard corrosion products formed on both test stations were simonkolleite and hydrozincite. This coincides well with the common corrosion products reported by various researchers for marine test stations worldwide …”

Section: Resultssupporting

confidence: 92%

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Atmospheric corrosion patterns of electrogalvanized mild steel at east southern coastal areas of CPEC

Jamil

Bano

Castaño

et al. 2018

Materials & Corrosion

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The primary goal of the study was to establish corrosivity category in accordance with ISO 9223 norm of the two test stations located at National Institute of Oceanography (NIO) and Karachi Port Trust (KPT) along the east southern coastal route of China Pakistan Economic Corridor (CPEC) project in Pakistan. Electrogalvanized mild steel test coupons were exposed for a period of 12 months from May 2014 to May 2015. Results indicated that for both NIO and KPT test stations the corrosivity category in term of corrosion rate (C5+) was not in agreement with the corrosivity category (C5) established by using the pollution category and time of wetness. Corrosion kinetic parameters n and correlation coefficient (R2) obtained for NIO were 1.58 and 0.98 and for KPT 1.43 and 0.95 respectively. Scanning electron microscopy/energy dispersive X‐ray spectroscopy (SEM/EDS) showed the presence of simonkolleite at NIO while zincite and hydrozincite at KPT. Fourier transform infrared (FTIR) spectroscopy showed that the typical corrosion products formed on both test stations were simonkolleite and hydrozincite. XRD showed the presence of zincite at both test stations and hydrozincite only at KPT.

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Section: Resultssupporting

confidence: 92%

“…The peaks at 1651.07 cm −1 showed the presence of water and corresponded to the OH bending vibration. A broad peak at 3504.66 cm −1 showed the hydroxide stretching in water …”

Section: Resultsmentioning

confidence: 99%

Atmospheric corrosion patterns of electrogalvanized mild steel at east southern coastal areas of CPEC

Jamil

Bano

Castaño

et al. 2018

Materials & Corrosion

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“…It is observed from Fig. (a) that the corrosion products crystallized in spherical particles distributed unevenly on the surface of the Zn‐Cu‐Ti sample, which was similar to the results reported by Aghzzaf et al and Chen et al . Besides, several cracks appeared on the surface of the Zn‐Cu‐Ti alloy, which would provide a channel for inward diffusion of oxygen through the corrosion layer, leading to further corrosion of the inner matrix.…”

Section: Resultssupporting

confidence: 86%

Corrosion behavior of Zn-Cu-Ti and Zn-Cu-Ti-Mg alloys in NaCl solution

Wang

Xiao

Zhao

et al. 2015

Materials and Corrosion

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In the present investigation the microstructure and corrosion behavior of Zn‐Cu‐Ti and Zn‐Cu‐Ti‐Mg alloys in 3.5 wt% NaCl solution were studied through scanning electron microscope, electron probe microanalysis, X‐ray diffraction, polarization measurements and immersion tests. The Zn‐Cu‐Ti exhibited eutectic structure with rod‐shaped TiZn15 phase, while the Zn‐Cu‐Ti‐Mg mainly consisted of Zn matrix, TiZn15, τ2‐Cu2TiZn22 ternary phase and Zn‐Mg intermetallics along the grain boundaries. It was observed that in the corrosion products of both Zn‐Cu‐Ti and Zn‐Cu‐Ti‐Mg alloys, the main phases were ZnO and Zn5(OH)8Cl2 · H2O. The corrosion tests showed that the cathodic process was suppressed and the weight gain decreased for Zn‐Cu‐Ti‐Mg alloy in 3.5 wt% NaCl solution. The better corrosion properties of Zn‐Cu‐Ti‐Mg was owed to the formation of a more compact and protective corrosion layer arising from the increased intensity of Zn5(OH)8Cl2 · H2O.

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“…The constant a, which is calculated as the corrosion rate after 1 year of exposure, has been used to characterize the corrosiveness level of exposure locations in ISO 9223 28 and many literatures. 10,16,48 In Xisha Islands, the constant a is 31.15 g/m 2 ·y, which is much higher than that obtained in other exposure sites such as Beijing, Qingdao, Jiangjin, and Wanning in China (Figure 13). 49 The power n is another significant parameter that can be considered as an indicator for the physicochemical behavior of the corrosion product layer and, hence, for its interactions with the atmospheric environment.…”

Section: Corrosion Kinetics Of Zinc In Tropical Marine Atmospherementioning

confidence: 64%