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Portugaliae Electrochimica Acta
Print version ISSN 0872-1904
Port. Electrochim. Acta vol.27 no.5 Coimbra 2009
Stainless Steel Electrodeposited with Zinc is not Good for Storing Thiourea Solution
S. Rajendran, 1, * V. Agnes Brigita, 2 J. Manivannan,3J. Jeyasundari 4
1 Corrosion Research Centre, Post Graduate and Research, Department of Chemistry, G.T.N Arts College, Dindigul -624005, Tamil Nadu, India.
2RVS College of Education, RVS Nagar, Dindigul 624005, Tamil Nadu, India
3 Department of Chemistry, Chettinad College of Engineering and Technology, Karur-639114, Tamil Nadu, India.
4Department of Chemistry, SVN College, Madurai, India
Received 14 February 2009; accepted 24 September 2009
Abstract
The use of stainless steel 304(SS) tanks to deposit thiourea in industry has been evaluated by studying the corrosion behaviour in 1% thiourea solution, before and after zinc plating.Weight loss method, 1% copper sulphate test, polarization study and AC impedance spectra have been used.The corrosion resistance of SS decreased when zinc was used for electrodeposition.Hence SS vessels electroplated with zinc should not be used to store thiourea solution, in industry.
Keywords: stainless steel, zinc plating, corrosion, thiourea, case study.
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*Corresponding author. E-mail address: srmjoany@sify.com.