Effect of flow velocity and entrained sand on inhibition performances of two inhibitors for CO2 corrosion of N80 steel in 3% NaCl solution

doi:10.1016/j.corsci.2004.11.012

IMR OpenIR

	Effect of flow velocity and entrained sand on inhibition performances of two inhibitors for CO2 corrosion of N80 steel in 3% NaCl solution
	Jiang, X; Zheng, YG; Ke, W
通讯作者	Zheng, YG()
	2005-11-01
发表期刊	CORROSION SCIENCE
ISSN	0010-938X
卷号	47 期号:11 页码:2636-2658
摘要	Inhibition for CO2 corrosion of N80 steel by quaternary alkynoxymethyl amine (IMC-80-Q) and imidazoline in 3% NaCl solution was investigated under static and flowing conditions by using modified rotating disk apparatus. The effects of flow velocity, concentration of inhibitor as well as entrained sand on inhibition performances were studied through weight loss test, scanning electron microscope (SEM) observation and electrochemical techniques including electrochemical impedance spectroscopy (EIS), linear polarization resistance. Electrochemical parameters such as R-1 and C-d for IMC-80-Q exhibited peak-value-phenomenon at inhibitor concentration of 150 mg/L when flow rate was below 5 m/s, in contrast with 300 mg/L when flow rate was beyond 5 m/s. The optimum concentration was further enhanced by the entrained sand in the medium containing IMC-80-Q. The adsorption of IMC-80-Q under static condition obeyed Langmuir isotherm when inhibitor concentration was below 150 mg/L, but it changed into Freundlich isotherm as inhibitor concentration was beyond 150 mg/L. The optimum inhibitor concentration of imidazoline under static condition was 100 mg/L, but it increased to 200 mg/L at 5 m/s. Under static condition imidazoline exhibited better inhibition than IMC-80-Q did; in contrast, at 5 m/s IMC-80-Q exhibited better inhibition than imidazoline did. The critical flow velocity was a function of both inhibitor type (IMC-80-Q or imidazoline) and inhibitor concentration. (c) 2005 Elsevier Ltd. All rights reserved.
DOI	10.1016/j.corsci.2004.11.012
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000232735800003
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/82883
通讯作者	Zheng, YG
作者单位	Chinese Acad Sci, Met Res Inst, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jiang, X,Zheng, YG,Ke, W. Effect of flow velocity and entrained sand on inhibition performances of two inhibitors for CO2 corrosion of N80 steel in 3% NaCl solution[J]. CORROSION SCIENCE,2005,47(11):2636-2658.
APA	Jiang, X,Zheng, YG,&Ke, W.(2005).Effect of flow velocity and entrained sand on inhibition performances of two inhibitors for CO2 corrosion of N80 steel in 3% NaCl solution.CORROSION SCIENCE,47(11),2636-2658.
MLA	Jiang, X,et al."Effect of flow velocity and entrained sand on inhibition performances of two inhibitors for CO2 corrosion of N80 steel in 3% NaCl solution".CORROSION SCIENCE 47.11(2005):2636-2658.