Investigation on the Corrosion and Cavitation Erosion Behaviors of the Cast and Friction Stir Processed Ni-Al Bronze in Sulfide-Containing Chloride Solution

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	Investigation on the Corrosion and Cavitation Erosion Behaviors of the Cast and Friction Stir Processed Ni-Al Bronze in Sulfide-Containing Chloride Solution
	Song, Q. N.; Xu, N.; Gu, W.; Bao, Y. F.; Wei, C. Y.; Ni, F. S.; Zheng, Y. G.; Ni, D. R.; Qiao, Y. X.; Bao, YF (reprint author), Hohai Univ, Minist Educ, Engn Res Ctr Dredging Technol, 200 Jinling North Rd, Changzhou 213022, Peoples R China.
刊名	ESG
	2017-11-01
卷号	12 期号:11 页码:10616-10632
关键词	Friction Stir Processing Ni-al Bronze Sulfide Corrosion Cavitation Erosion
ISSN号	1452-3981
英文摘要	Corrosion and cavitation erosion behaviors of the cast and friction stir processed (FSP) Ni-Al bronze (NAB) in sulfide-containing (polluted) 3.5% NaCl solution were investigated in the present study. The electrochemical impedance spectroscopy (EIS) results demonstrated that the corrosion product film formed in the polluted solution was of poor protectiveness, and the gravimetric measurements results indicated that the sulfide ions increased the corrosion rate by a factor of 1.13 for the cast and 2.12 for the FSP NAB, compared with the results in clean 3.5% NaCl solution. The sulfide ions promoted the formation of a thick and porous corrosion product film, which consisted of sulfides and oxides. Deep pits were found propagated along the eutectoid microstructure for the cast and the beta' phases for the FSP NAB. The cavitation erosion mass loss with the addition of sulfide was 0.92 times and 2.52 times more than that in the clean solution for the cast and FSP, respectively. The increased corrosion damage induced by the sulfide ions deteriorated the mechanical properties and consequently accelerated the cavitation erosion degradation. The corrosion -cavitation erosionsynergy/total mass loss (i.e. S/T) value in the polluted solution reached 73.48% for the cast and 76.94% for the FSP. It can be seen that the FSP NAB exhibited no obvious superiority in the corrosion and cavitation erosion resistance, compared with the cast one in the sulfide-containing chloride solution.; Corrosion and cavitation erosion behaviors of the cast and friction stir processed (FSP) Ni-Al bronze (NAB) in sulfide-containing (polluted) 3.5% NaCl solution were investigated in the present study. The electrochemical impedance spectroscopy (EIS) results demonstrated that the corrosion product film formed in the polluted solution was of poor protectiveness, and the gravimetric measurements results indicated that the sulfide ions increased the corrosion rate by a factor of 1.13 for the cast and 2.12 for the FSP NAB, compared with the results in clean 3.5% NaCl solution. The sulfide ions promoted the formation of a thick and porous corrosion product film, which consisted of sulfides and oxides. Deep pits were found propagated along the eutectoid microstructure for the cast and the beta' phases for the FSP NAB. The cavitation erosion mass loss with the addition of sulfide was 0.92 times and 2.52 times more than that in the clean solution for the cast and FSP, respectively. The increased corrosion damage induced by the sulfide ions deteriorated the mechanical properties and consequently accelerated the cavitation erosion degradation. The corrosion -cavitation erosionsynergy/total mass loss (i.e. S/T) value in the polluted solution reached 73.48% for the cast and 76.94% for the FSP. It can be seen that the FSP NAB exhibited no obvious superiority in the corrosion and cavitation erosion resistance, compared with the cast one in the sulfide-containing chloride solution.
学科主题	Electrochemistry
语种	英语
资助机构	Fundamental Research Funds for the Central Universities of P.R. China [2015B30314]; National Natural Science Foundation of China [51601058, 51401092]
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78992]
专题	金属研究所_中国科学院金属研究所
通讯作者	Bao, YF (reprint author), Hohai Univ, Minist Educ, Engn Res Ctr Dredging Technol, 200 Jinling North Rd, Changzhou 213022, Peoples R China.
推荐引用方式 GB/T 7714	Song, Q. N.,Xu, N.,Gu, W.,et al. Investigation on the Corrosion and Cavitation Erosion Behaviors of the Cast and Friction Stir Processed Ni-Al Bronze in Sulfide-Containing Chloride Solution[J]. ESG,2017,12(11):10616-10632.
APA	Song, Q. N..,Xu, N..,Gu, W..,Bao, Y. F..,Wei, C. Y..,...&Bao, YF .(2017).Investigation on the Corrosion and Cavitation Erosion Behaviors of the Cast and Friction Stir Processed Ni-Al Bronze in Sulfide-Containing Chloride Solution.ESG,12(11),10616-10632.
MLA	Song, Q. N.,et al."Investigation on the Corrosion and Cavitation Erosion Behaviors of the Cast and Friction Stir Processed Ni-Al Bronze in Sulfide-Containing Chloride Solution".ESG 12.11(2017):10616-10632.