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The Effect of Temperature on the Corrosion of Mild Steel in H3PO4 Containing Halides and Sulfate Ions  

Chandrasekaran, V. (Department of Chemistry, Government College of engineering)
Kannan, K. (Department of Chemistry, Government College of engineering)
Natesan, M. (Department of Chemistry, Government College of engineering)
Publication Information
Corrosion Science and Technology / v.4, no.1, 2005 , pp. 8-14 More about this Journal
Abstract
The corrosion behaviour of mild steel in phosphoric acid solution in the presence and absence of pollutants viz. Chloride, Fluoride and Sulfate ions at 302K-333K was studied using mass loss and potentiostatic polarization methods. The addition of chloride and sulfate ions inhibits the mild steel corrosion in phosphoric acid while fluoride ions stimulate it. The effect of temperature on the corrosion behaviour of mild steel indicated that inhibition of chloride and sulfate ions decreased with increasing temperature. The adsorption of these ions (Chloride and sulfate) on the mild steel surface in acid has been found to obey Langmuir adsorption isotherm. The values of activation energy (Ea) and free energy of adsorption ($\Delta$) indicated physical adsorption of these ions (chloride and sulfate) on the mild steel surface. The plot of $logW_{f}$ against time (days) at 302K gives a straight line, which suggested that it obeys first order kinetics and also calculate the rate constant k and half-life time $t_{1/2}$.
Keywords
mild steel; phosphoric acid; halides; sulfate; polarization; corrosion inhibition;
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  • Reference
1 Mars.G.Fontana, Corrosion Engineering 3rd Edn, p.357
2 P. B. Mathur and T. Vasudevan, Corrosion, 38, 17 (1982)
3 M. Ajmal, A. S. Mideen, and M. A. Quraishi, Corros Sci., 36, 79 (1994)   DOI   ScienceOn
4 K. E. Heusler, J. Electrochem. Soc., 62, 529 (1958)
5 R. M. Hudson G. J. Waming Corros. Sci., 10, 12 (1970)
6 M. Natesan, G. Venkatachari, and S. Venkatakrishna Iyer, Bull. Electrochem., 9, 403 (1993)
7 M S Abdel-Aal and A A Hermas, Appl. Electrochem., 30, 339 (2000)
8 N. Hackermann, E. S. Snevel, and J. S. Pag-ne, J. Electrochem. Soc., 113, 677 (1966)
9 A. C. Hart, Br. Corros. J., 8, 66 (1973)
10 T. Sydberger and S. Nordin, Corrosion, 34, 16 (1978)
11 A Guenbour, J Faucheu, and A Ben-Bachir, Corrosion, 44, 214 (1988)
12 K. Snyder, I. N. Holt, R., Winston (Eds), Chem Struct React, 56, (1978)
13 E. E. Ebenso, Bull. Electrochem.,19(5), 209 (2003)
14 P. Barrco, G. Chairo and A. C. Farina, Proc of the 11th International Corrosion Congress Florence, and Italy, 2(2), 539 (1990)
15 F Smith and N H Van Droffelaar, Br. Corrs. J., 26, 265 (1991)
16 J. P. Audourand, D. Catelin and P. Soulignac, Corros. Prevo Process Ind., Proc, NACE 1st Int. Symp., 1988 (1990) p.71
17 H. Williams and R. A. Hamson, Surf Tech., 4, 465 (1976)
18 N. C. Subramaniam, B. S. Sheshadri, and S. M. Mayanna, J. Electrochem. Soc. India, 42, 95 (1993)
19 E. E. Ebenson, P. C. Okafor, O. E. Offiong BI Ifa, U. T. Ibok, and U. T. Ekpe, Bull. Electrochem., 17(10), 459 (2001)
20 M. A. Quraishi and H. K. Sharma, Bull. Electrochem., 19(12), 535 (2003)
21 L. Dc Michelli, A. H. P. Andrea, C. A. Barbosa, and S. M. L. Agostinho, Br. Corros. J., 34, 67 (1999)
22 A. C. Hart, Br. Corros. J., 6, 205 (1971)
23 R. M. Hudson G. J. Warning, Mat. Prot., 6, 52 (1967)
24 Mohamed Samir S Morad, Abo El-Hagag, A. Hermas and Mohamed, S. Abdel Aal, J Chem. Technol. Biotechnol., 77, 186 (2002)
25 G. K. Gomma, Mater Chem Phys, 55, 241 (1998)
26 R. Saratha, C. Markkannu, and S. Sivakumar-Sundari, Bull. Electrochem., 18(3), 141 (2002)
27 R. M. Saleh, M. M. Badran, A. A. Alhosary, and H. A. El Dahan, Br. Corros. J., 3, 105 (1988)
28 J. E. Huheey, Inorganic Chemistry. 3rd Edn., p.46 (1998)
29 H. M. Bhajiwala and R. T. Vashi, Bull. Electrochem., 18(6), 261 (2002)
30 P. C. Okafor, E. E. Ebenso, U. J. Ibok, U. J. Ekpe, and M. J. Ikpi, Trans. SAEST, 38, 91 (2003)
31 M. A. Quaraishi and D. Jamal, Bull. Electrochem., 18(7), 289 (2002)
32 K. F. Hager and M. Rosenthal, Corrosion, 6, 344 (1950)
33 M. S. Abdel-Aal and A. A. Hormas, Appl. Electrochem., 30, 339 (2000)
34 A Alon, J Yahalon and M Schorr, Corrosion, 31, 315 (1978)
35 J. O. M. Bockris, B. Drazic, and A R Despic, Electrochem Acta, 4, 325 (1961)
36 A. J. Ariva and J. J. Podesta, Corros. Sci., 8, 203 (1968)
37 ASTM G 13-72, 'Standard practice for Laboratory Immersion Corrosion Testing of Metals' (West Conshohocken, PA: ASTM,1990)