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.
AU - Achutha Kini, U.
AU - Shetty, Prakash
PY - 2011/1/1
Y1 - 2011/1/1
N2 - 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.
AB - 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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U2 - 10.1080/00986445.2010.499838
DO - 10.1080/00986445.2010.499838
M3 - Article
AN - SCOPUS:77958610860
SN - 0098-6445
VL - 198
SP - 120
EP - 130
JO - Chemical Engineering Communications
JF - Chemical Engineering Communications
IS - 1
ER -