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题名: Corrosion Behavior of Cu40Zn in Sulfide-Polluted 3.5% NaCl Solution
作者: Song, Q. N.;  Xu, N.;  Bao, Y. F.;  Jiang, Y. F.;  Gu, W.;  Yang, Z.;  Zheng, Y. G.;  Qiao, Y. X.
发表日期: 2017-10-1
摘要: 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.
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
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.

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