Inhibiting effect of N-cyclohexyl-N'-phenyl thiourea on the corrosion of 304 SS in hydrochloric acid solution

Ramadev Herle, S. Divakara Shetty, U. Achutha Kini, Prakash Shetty

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The inhibiting action of N-cyclohexyl-N'-phenyl thiourea (CPTU) on the corrosion behavior of 304 SS in 3M hydrochloric acid solution has been investigated using potentiodynamic polarization technique at four different temperatures. The results obtained reveal that CPTU acts as an efficient anodic inhibitor for the corrosion of 304 SS. Good inhibition efficiency (>92%) was evident in the acidic solution, and it was found to vary with temperature and concentration of the inhibitor. The adsorption of this compound on the 304 SS surface was found to obey the Temkin adsorption isotherm, and the inhibition was governed by physical adsorption mechanism. The thermodynamic parameters of adsorption deduced revealed a strong interaction and spontaneous adsorption of CPTU on the steel surface. Scanning electron microscopic study (SEM) was done to investigate the surface characterization of inhibited and uninhibited 304 SS specimens.

Original languageEnglish
Pages (from-to)120-130
Number of pages11
JournalChemical Engineering Communications
Volume198
Issue number1
DOIs
Publication statusPublished - 01-01-2011

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Phenylthiourea
Hydrochloric Acid
Thioureas
Hydrochloric acid
Corrosion
Adsorption
Potentiodynamic polarization
Steel
Corrosion inhibitors
Adsorption isotherms
Thermodynamics
Scanning
Temperature
Electrons

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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abstract = "The inhibiting action of N-cyclohexyl-N'-phenyl thiourea (CPTU) on the corrosion behavior of 304 SS in 3M hydrochloric acid solution has been investigated using potentiodynamic polarization technique at four different temperatures. The results obtained reveal that CPTU acts as an efficient anodic inhibitor for the corrosion of 304 SS. Good inhibition efficiency (>92{\%}) was evident in the acidic solution, and it was found to vary with temperature and concentration of the inhibitor. The adsorption of this compound on the 304 SS surface was found to obey the Temkin adsorption isotherm, and the inhibition was governed by physical adsorption mechanism. The thermodynamic parameters of adsorption deduced revealed a strong interaction and spontaneous adsorption of CPTU on the steel surface. Scanning electron microscopic study (SEM) was done to investigate the surface characterization of inhibited and uninhibited 304 SS specimens.",
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Inhibiting effect of N-cyclohexyl-N'-phenyl thiourea on the corrosion of 304 SS in hydrochloric acid solution. / Herle, Ramadev; Divakara Shetty, S.; Achutha Kini, U.; Shetty, Prakash.

In: Chemical Engineering Communications, Vol. 198, No. 1, 01.01.2011, p. 120-130.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Inhibiting effect of N-cyclohexyl-N'-phenyl thiourea on the corrosion of 304 SS in hydrochloric acid solution

AU - Herle, Ramadev

AU - Divakara Shetty, S.

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AU - Shetty, Prakash

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