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Corrosion Behavior of Cu40Zn in Sulfide-Polluted 3.5% NaCl Solution
Song, Q. N.; Xu, N.; Bao, Y. F.; Jiang, Y. F.; Gu, W.; Yang, Z.; Zheng, Y. G.; Qiao, Y. X.; Bao, YF (reprint author), Hohai Univ, Coll Mech & Elect Engn, 200 Jinling North Rd, Changzhou 213022, Peoples R China.
2017-10-01
Source PublicationSPRINGER
ISSN1059-9495
Volume26Issue:10Pages:4822-4830
AbstractThe corrosion behavior of a duplex-phase brass Cu40Zn in clean and sulfide-polluted 3.5% NaCl solutions was investigated by conducting electrochemical and gravimetric measurements. The corrosion product films were analyzed by scanning electron microscopy, energy-dispersive spectroscopy and x-ray diffraction. The presence of sulfide shifted the corrosion potential of Cu40Zn toward a more negative value by 100 mV and increased the mass loss rate by a factor of 1.257 compared with the result in the clean solution. The corrosion product film in the clean solution was thin and compact; it mainly consisted of oxides, such as ZnO and Cu2O. By contrast, the film in the sulfide-polluted solution was thick and porous. It mainly contained sulfides and zinc hydroxide chloride (i.e., Zn-5(OH)(8)Cl-2 center dot H2O). The presence of sulfide ions accelerated the corrosion damage of Cu40Zn by hindering the formation of protective oxides and promoting the formation of a defective film which consisted of sulfides and hydroxide chlorides.; The corrosion behavior of a duplex-phase brass Cu40Zn in clean and sulfide-polluted 3.5% NaCl solutions was investigated by conducting electrochemical and gravimetric measurements. The corrosion product films were analyzed by scanning electron microscopy, energy-dispersive spectroscopy and x-ray diffraction. The presence of sulfide shifted the corrosion potential of Cu40Zn toward a more negative value by 100 mV and increased the mass loss rate by a factor of 1.257 compared with the result in the clean solution. The corrosion product film in the clean solution was thin and compact; it mainly consisted of oxides, such as ZnO and Cu2O. By contrast, the film in the sulfide-polluted solution was thick and porous. It mainly contained sulfides and zinc hydroxide chloride (i.e., Zn-5(OH)(8)Cl-2 center dot H2O). The presence of sulfide ions accelerated the corrosion damage of Cu40Zn by hindering the formation of protective oxides and promoting the formation of a defective film which consisted of sulfides and hydroxide chlorides.
description.department[song, q. n. ; xu, n. ; bao, y. f. ; jiang, y. f. ; gu, w. ; yang, z.] hohai univ, coll mech & elect engn, 200 jinling north rd, changzhou 213022, peoples r china ; [zheng, y. g.] chinese acad sci, key lab nucl mat & safety assessment, inst met res, 62 wencui rd, shenyang 110016, liaoning, peoples r china ; [qiao, y. x.] jiangsu univ sci & technol, coll mat sci & engn, 2 mengxi rd, zhenjiang 212003, peoples r china
KeywordCorrosion Product Film Electrochemical Measurements Nonferrous Metals Sulfide X-ray
Subject AreaMaterials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [51601058]; Fundamental Research Funds for the Central Universities of P.R. China [2015B30314, 2014B11614]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79065
Collection中国科学院金属研究所
Corresponding AuthorBao, YF (reprint author), Hohai Univ, Coll Mech & Elect Engn, 200 Jinling North Rd, Changzhou 213022, Peoples R China.
Recommended Citation
GB/T 7714
Song, Q. N.,Xu, N.,Bao, Y. F.,et al. Corrosion Behavior of Cu40Zn in Sulfide-Polluted 3.5% NaCl Solution[J]. SPRINGER,2017,26(10):4822-4830.
APA Song, Q. N..,Xu, N..,Bao, Y. F..,Jiang, Y. F..,Gu, W..,...&Bao, YF .(2017).Corrosion Behavior of Cu40Zn in Sulfide-Polluted 3.5% NaCl Solution.SPRINGER,26(10),4822-4830.
MLA Song, Q. N.,et al."Corrosion Behavior of Cu40Zn in Sulfide-Polluted 3.5% NaCl Solution".SPRINGER 26.10(2017):4822-4830.
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