Corrosion Inhibition of Copper in Sea Water Using Derivatives of Tetrazoles and Thiosemicarbazide

Author(s): Abdul-Khalek Younes, Ibrahim Ghayad*, Emel B. Ömer, Fatma Kandemirli.

Journal Name: Innovations in Corrosion and Materials Science
Formerly Recent Patents on Corrosion Science

Volume 8 , Issue 1 , 2018

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Abstract:

Background: The present paper investigates the corrosion inhibition of copper using six corrosion inhibitors namely: 4-phenyl thiosemicarbazide (PTSC), Salicylaldehydethiosemicarbazone (STSC). 5-Mercapto-1-methyle tetrazole (MMT), 5-(3-Pyridyl)-1H-tetrazole (PyTA), 5-phenyl-1-Htetrazole (PTA) and 5-Amino-tetrazole monohydrate (ATA).

Method: Copper samples were tested using potentiodynamic polarization technique in the absence and in the presence of corrosion inhibitors.

Results: Results show that tetrazole derivatives show high inhibition efficiencies (≥90%) in comparison to thiosemicarbazide derivatives (<80%). The highest inhibition efficiency of 92.9% was shown by ATAH at 2000 ppm. The order of inhibition efficiencies of the tested compounds was as follows: PTA≈ATA >PyTA> MMT > STC > PTSC.

Keywords: Corrosion inhibition, copper, sea water, thiosemicarbazides, tetrazoles, inhibition efficiency.

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Article Details

VOLUME: 8
ISSUE: 1
Year: 2018
Page: [60 - 66]
Pages: 7
DOI: 10.2174/2352094908666180830123952
Price: $58

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