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Study on corrosion behavior of zinc exposed in coastal-industrial atmospheric environment
Liu, Y. W.; Wang, Z. Y.; Cao, G. W.; Cao, Y.; Huo, Y.; Wang, ZY (reprint author), Chinese Acad Sci, Inst Met Res, Environm Corros Ctr, Wencui Rd 62, Shenyang 110016, Liaoning, Peoples R China.
2017-09-01
Source PublicationELSEVIER SCIENCE SA
ISSN0254-0584
Volume198Pages:243-249
AbstractThe corrosion behavior of zinc subjected to Liaoning Hongyanhe nuclear power station (a typical coastal industrial atmospheric environment) has been investigated by weight-loss measurement, scanning electron microscopy (SEM) observation, x-ray diffraction (XRD), potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The experimental results reveal that the corrosion kinetics of the corrosion of zinc in coastal-industrial atmospheric environment followed empirical equation D = At, and with the increase of the exposure time polarization resistance (RP) and charge transfer resistance (R-ct) increased, the corrosion rate decreased gradually. XRD, SEM and EDS indicated that the depth and width of all pits increased with time and the surface corrosion gradually transformed into a uniform corrosion. The components of the rust layers were composed of Zn-5(CO3)(2) (OH)(6), NaZn4SO4 CI(OH)(6)center dot 6H(2)O and Zn-12(OH)(15)Cl-3(SO4)(3)center dot 5H(2)O. In the initial exposure period, the corrosion products was Zn-5(CO3)(2)(OH)(6), while with prolonged exposure, a two -layer structured corrosion products formed, which were comprised of NaZn4(SO4)CI(OH)(6)center dot 6H(2)O and Zni(2)(OH)(15)Cl-3(SO4)(3)center dot 5H(2)O, all these products were flaky-structured and compact enough to provide excellent protection. (C) 2017 Elsevier B.V. All rights reserved.; The corrosion behavior of zinc subjected to Liaoning Hongyanhe nuclear power station (a typical coastal industrial atmospheric environment) has been investigated by weight-loss measurement, scanning electron microscopy (SEM) observation, x-ray diffraction (XRD), potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The experimental results reveal that the corrosion kinetics of the corrosion of zinc in coastal-industrial atmospheric environment followed empirical equation D = At, and with the increase of the exposure time polarization resistance (RP) and charge transfer resistance (R-ct) increased, the corrosion rate decreased gradually. XRD, SEM and EDS indicated that the depth and width of all pits increased with time and the surface corrosion gradually transformed into a uniform corrosion. The components of the rust layers were composed of Zn-5(CO3)(2) (OH)(6), NaZn4SO4 CI(OH)(6)center dot 6H(2)O and Zn-12(OH)(15)Cl-3(SO4)(3)center dot 5H(2)O. In the initial exposure period, the corrosion products was Zn-5(CO3)(2)(OH)(6), while with prolonged exposure, a two -layer structured corrosion products formed, which were comprised of NaZn4(SO4)CI(OH)(6)center dot 6H(2)O and Zni(2)(OH)(15)Cl-3(SO4)(3)center dot 5H(2)O, all these products were flaky-structured and compact enough to provide excellent protection. (C) 2017 Elsevier B.V. All rights reserved.
description.department[liu, y. w. ; wang, z. y. ; cao, g. w.] chinese acad sci, inst met res, environm corros ctr, wencui rd 62, shenyang 110016, liaoning, peoples r china ; [liu, y. w.] univ sci & technol china, sch mat sci & engn, jinzhai rd 96, hefei 230026, anhui, peoples r china ; [cao, y. ; huo, y.] liaoning hongyanhe nucl power co ltd, dalian 116319, peoples r china
KeywordZinc Atmospheric Corrosion Sem Eis
Subject AreaMaterials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [51131007]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79132
Collection中国科学院金属研究所
Corresponding AuthorWang, ZY (reprint author), Chinese Acad Sci, Inst Met Res, Environm Corros Ctr, Wencui Rd 62, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Liu, Y. W.,Wang, Z. Y.,Cao, G. W.,et al. Study on corrosion behavior of zinc exposed in coastal-industrial atmospheric environment[J]. ELSEVIER SCIENCE SA,2017,198:243-249.
APA Liu, Y. W.,Wang, Z. Y.,Cao, G. W.,Cao, Y.,Huo, Y.,&Wang, ZY .(2017).Study on corrosion behavior of zinc exposed in coastal-industrial atmospheric environment.ELSEVIER SCIENCE SA,198,243-249.
MLA Liu, Y. W.,et al."Study on corrosion behavior of zinc exposed in coastal-industrial atmospheric environment".ELSEVIER SCIENCE SA 198(2017):243-249.
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