LANGMUIR-BLODGETT FILM OF INHIBITOR AND ITS USE FOR THE INVESTIGATION OF INHIBITION MECHANISM

J Chin Soc Corr Pro

1995, Vol. 15

Issue (1): 1-6 DOI:

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LANGMUIR-BLODGETT FILM OF INHIBITOR AND ITS USE FOR THE INVESTIGATION OF INHIBITION MECHANISM

Xing Wei; Guo Du; Shan Yibin; Lu Tianhong; Xi Shiquan(Changchun Institute of Applied Chemistry; Chinese Academy of Sciences)

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Abstract The langmuir-blodgett (LB) technique was used to investigate the inhibition of both stearic acid (SA) and hexadecyltrimethyl ammonium bromide (HTAB) in neutral and acidic media. The microstructure of inhibitor-formed film might be controlled on molecular scale. The relationship between the inhibition efficiency and the orientation as weel as the layer number of the LB monolayers of these inhibitors on steel electrodes was examined by electrochemical methods. Their mechanism was discussed on the ground of experimental results and calculation. It is concluded that the mechanism of SA is mainly due to the blocking effect while that of HTAB is due to the synergistic effect of Br-with the electrostatic effect of the positively charged quaternary ammonium ion of HTAB.

Key words: Langmuir-Blodgett film Corrosion inhibitor Stearic acid Quaternary ammonium salt

Received: 25 February 1995

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Xing Wei; Guo Du; Shan Yibin; Lu Tianhong; Xi Shiquan(Changchun Institute of Applied Chemistry; Chinese Academy of Sciences). LANGMUIR-BLODGETT FILM OF INHIBITOR AND ITS USE FOR THE INVESTIGATION OF INHIBITION MECHANISM. J Chin Soc Corr Pro, 1995, 15(1): 1-6.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1995/V15/I1/1

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