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Chemical treatment of zinc surface and its corrosion inhibition studies
S K Rajappa T V Venkatesha B M Praveen
Corrosion Volume 31 Issue 1 February 2008 pp 37-41
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https://www.ias.ac.in/article/fulltext/boms/031/01/0037-0041 -
Keywords
Corrosion ;inhibitors ;electrochemical measurement ;zinc. -
Abstract
The surface treatment of zinc and its corrosion inhibition was studied using a product (BTSC) formed in the reaction between benzaldehyde and thiosemicarbozide. The corrosion behaviour of chemically treated zinc surface was investigated in aqueous chloride–sulphate medium using galvanostatic polarization technique. Zinc samples treated in BTSC solution exhibited good corrosion resistance. The measured electrochemical data indicated a basic modification of the cathode reaction during corrosion of treated zinc. The corrosion protection may be explained on the basis of adsorption and formation of BTSC film on zinc surface. The film was binding strongly to the metal surface through nitrogen and sulphur atoms of the product. The formation of film on the zinc surface was established by surface analysis techniques such as scanning electron microscopy (SEM–EDS) and Fourier transform infrared spectroscopy (FTIR).
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Author Affiliations
S K Rajappa1 T V Venkatesha2 B M Praveen2
- Department of Chemistry, Kalpataru Vidya Samsthe, Tiptur 572 202, India
- Department of PG Studies and Research in Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta 577 451, India
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Dates
- Published
- February 2008
- Manuscript received
- 22 August 2007
- Manuscript revised
- 11 October 2007
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Bulletin of Materials Science
Volume 46, 2023
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