Influence of anions on corrosion inhibition and hydrogen permeation through mild steel in acidic solutions in the presence of p-tolyl thiourea
The influence of anions such as chloride and sulphate on the inhibition of corrosion of mild steel by p-tolyl thiourea (PTTU) in 1N HCl and 1N H sub 2 SO sub 4 has been studied using weight loss and gasometric measurements, galvanostatic polarisation studies and ac impedance measurements. The compou...
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| Veröffentlicht in: | Indian journal of chemical technology 2002, Vol.9 (1), p.68-73 |
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| creator | MURALIDHARAN, S MADHAVAN, K KARTHIKEYAN, S VENKATAKRISHNA IYER, S |
| description | The influence of anions such as chloride and sulphate on the inhibition of corrosion of mild steel by p-tolyl thiourea (PTTU) in 1N HCl and 1N H sub 2 SO sub 4 has been studied using weight loss and gasometric measurements, galvanostatic polarisation studies and ac impedance measurements. The compound is found to be less inhibitive in 1N HCl than in 1N H sub 2 SO sub 4 . The influence of p-tolyl thiourea on the extent of hydrogen permeated through mild steel in acidic solutions has been studied using electro-permeation technique. The compound is found to enhance the permeation of hydrogen through mild steel in both the acids. The adsorption of p-tolyl thiourea on the mild steel surface from both the acids obeys Temkin's adsorption isotherm. The increase of charge transfer resistance (R sub t ) and decrease in double layer capacitance (C sub dl ) values of the metal electrode in the presence of the test compound (PTTU) show the adsorption of the compound on the metal surface. |
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The compound is found to be less inhibitive in 1N HCl than in 1N H sub 2 SO sub 4 . The influence of p-tolyl thiourea on the extent of hydrogen permeated through mild steel in acidic solutions has been studied using electro-permeation technique. The compound is found to enhance the permeation of hydrogen through mild steel in both the acids. The adsorption of p-tolyl thiourea on the mild steel surface from both the acids obeys Temkin's adsorption isotherm. The increase of charge transfer resistance (R sub t ) and decrease in double layer capacitance (C sub dl ) values of the metal electrode in the presence of the test compound (PTTU) show the adsorption of the compound on the metal surface.</description><identifier>ISSN: 0971-457X</identifier><language>eng</language><publisher>New Delhi: Council of Scientific & Industrial Research</publisher><subject>Applied sciences ; Corrosion ; Corrosion prevention ; Exact sciences and technology ; Metals. 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The compound is found to be less inhibitive in 1N HCl than in 1N H sub 2 SO sub 4 . The influence of p-tolyl thiourea on the extent of hydrogen permeated through mild steel in acidic solutions has been studied using electro-permeation technique. The compound is found to enhance the permeation of hydrogen through mild steel in both the acids. The adsorption of p-tolyl thiourea on the mild steel surface from both the acids obeys Temkin's adsorption isotherm. The increase of charge transfer resistance (R sub t ) and decrease in double layer capacitance (C sub dl ) values of the metal electrode in the presence of the test compound (PTTU) show the adsorption of the compound on the metal surface.</description><subject>Applied sciences</subject><subject>Corrosion</subject><subject>Corrosion prevention</subject><subject>Exact sciences and technology</subject><subject>Metals. 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The compound is found to be less inhibitive in 1N HCl than in 1N H sub 2 SO sub 4 . The influence of p-tolyl thiourea on the extent of hydrogen permeated through mild steel in acidic solutions has been studied using electro-permeation technique. The compound is found to enhance the permeation of hydrogen through mild steel in both the acids. The adsorption of p-tolyl thiourea on the mild steel surface from both the acids obeys Temkin's adsorption isotherm. The increase of charge transfer resistance (R sub t ) and decrease in double layer capacitance (C sub dl ) values of the metal electrode in the presence of the test compound (PTTU) show the adsorption of the compound on the metal surface.</abstract><cop>New Delhi</cop><pub>Council of Scientific & Industrial Research</pub><tpages>6</tpages></addata></record> |
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| subjects | Applied sciences Corrosion Corrosion prevention Exact sciences and technology Metals. Metallurgy |
| title | Influence of anions on corrosion inhibition and hydrogen permeation through mild steel in acidic solutions in the presence of p-tolyl thiourea |
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