Study on Inhibitor properties of Quaternary Alkynoxymethyl Amine and Imidazoline for N80 Seamless Steel in 3% NaCl Saturated by CO2

J Chin Soc Corr Pro

2004, Vol. 24

Issue (1): 10-15 DOI:

Research Report

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Study on Inhibitor properties of Quaternary Alkynoxymethyl Amine and Imidazoline for N80 Seamless Steel in 3% NaCl Saturated by CO2

Xiu Jiang;Suzhen Luo;YUgui Zheng;Wei Ke

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Abstract A study on the effect of IMC-80-Q(quaternary alkynoxymethyl amine) and IMC-871-W(imidazoline) on the electrochemical behavior and inhibitor properties of N80 steel in 3% NaCl saturated by CO2 at 25±10C was carried out by means of weight loss and electrochemistry techniques including EIS, potentiodynamic polarization and linear polarization. The sharp decrease of anodic current density ia, positive shift of corrosion potential (Ecorr) and anodic desorption were observed in inhibited solutions.The electrochemical parameters Rp,Cd and Rt exhibited extreme values at certain concentrations of two inhibitors,150mg/L for IMC-80-Q and 100mg/L for IMC-871-W ,respectively.IMC-871-W had better inhibitor properties than IMC-80-Q.The weight loss test at 7m/s showed that the cumulative mass loss was decreased sharply for solutions containing IMC-80-Q, compared with inhibitor-free brine, and extreme-value-phenomena of concentration was not observed up to 300mg/L.

Key words: CO2 corrosion N80 seamless steel inhibitor extreme-value-phenomena of concentration anodic desorptio

Received: 13 February 2003

ZTFLH:

TG174.42

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	Xiu Jiang
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	YUgui Zheng
	Wei Ke

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Xiu Jiang; Suzhen Luo; YUgui Zheng; Wei Ke. Study on Inhibitor properties of Quaternary Alkynoxymethyl Amine and Imidazoline for N80 Seamless Steel in 3% NaCl Saturated by CO2. J Chin Soc Corr Pro, 2004, 24(1): 10-15 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2004/V24/I1/10

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