Investigation of AISI 316 stainless steel corrosion in perchloric acid
Keywords:AISI 316 stainless steel, perchloric acid, corrosion, electrochemical polarization, benzotriazole corrosion inhibitor
The authors study the corrosion of AISI 316 stainless steel in 1M perchloric acid at 90 °C, including in the presence of the benzotriazole corrosion inhibitor. Electrochemical experiments were carried out in a three-electrode glass cell with a platinum counter electrode and a saturated silver chloride electrode as a reference electrode. The authors carried out the potentiodynamic measurements at the temperature of (90±2) °C and the potential sweep speed of 1 mV/s; the impedance measurements within the frequency range from 20 kHz to 0.1 Hz at the voltage amplitude of ±10 mV. Cyclic polarization curves show that the cathode direction currents are always lower than the anode direction currents of the potential sweep. Consequently, the curves of anode and cathode directions of the potential sweep are analyzed separately. When analyzing, the authors use the modified Tafel equation, which is linear at any overload that allow determining the corrosion currents more accurately. The study shows that with an increase in the inhibitor concentration, the potentiodynamic curves shift to the cathode side, and the cathode currents decrease more strongly than the anode currents. Therefore, benzotriazole in perchloric acid is an inhibitor of cathodic action, i.e. slows down the cathodic reaction of the perchloric acid anion reduction to chloride ions. The authors identified that benzotriazole inhibits corrosion at concentrations of more than 10-4 mol/L. At the concentration of 1×10-3 mol/L, the inhibition efficiency is 33±10 %, and at the concentration of 1×10-2 mol/L, it is 36±13 %. The inhibiting effect of a benzotriazole molecule in the acidic medium is caused by the possibility of its protonated form to be adsorbed on the metal surface. The protonated form of benzotriazole in acidic medium allows explaining the slow-down of the cathode depolarization reaction as the inhibitor is adsorbed predominantly on metal surface areas charged more negatively. The impedance measurements showed that the corrosion process is modeled by the element parallel circuit with the constant phase shift and corrosion resistance.
Domingos D.V., Tozzi F.C., Barros E.V., Pinto F.E., Sad C.M.S., Filgueiras P.R., Lacerda V.Jr., Dias H.P., Aquijea G.M., Romão W. Study of the Corrosion of AISI 316 and AISI 1020 Steels by Light, Scanning Electron and Atomic Force Microscopies. Journal of the Brazilian Chemical Society, 2018, vol. 29, no. 11, pp. 2244–2253.
Tufanov D.G. Korrozionnaya stoykost’ nerzhaveyushchikh staley, splavov i chistykh metallov [Corrosion resistance of stainless steels, alloys and pure metals]. Moscow, Metallurgiya Publ., 1990. 320 p.
Fattah-Alhosseini A., Saatchi A., Golozar M.A., Raeissi K. The transpassive dissolution mechanism of 316L stainless steel. Electrochimica Acta, 2009, vol. 54, no. 13, pp. 3645–3650.
Lizlovs E.A., Bond A.P. Anodic polarization behavior of high-purity 13 and 18% Cr stainless steel. Journal of the Electrochemical Society, 1975, vol. 122, no. 6, pp. 719–722.
Ait Albrimi Y., Eddib A., Douch J., Berghoute Y., Hamdani M., Souto R.M. Electrochemical Behaviour of AISI 316 Austenitic Stainless Steel in Acidic Media Containing Chloride Ions. International Journal of Electrochemical Science, 2011, vol. 6, no. 10, pp. 4614–4627.
Lewis G., Fox P.G., Boden P.J. Corrosion of Fe-12Cr iron-chromium alloys in o-phosphoric acid. Corrosion Science, 1980, vol. 20, no. 3, pp. 331–339.
Prinz H., Strehblow H. Investigations on pitting corrosion of iron in perchlorate electrolytes. Corrosion Science, 1998, vol. 40, no. 10, pp. 1671–1683.
Burstein G.T., Marshal P.I. The coupled kinetics of film growth and dissolution of stainless steel repassivating in acid solutions. Corrosion Science, 1984, vol. 24, no. 5, pp. 449–462.
Larabi L., Benali O., Harek Y. Corrosion inhibition of cold rolled steel in 1 M HClO4 solutions by N-naphtyl N′-phenylthiourea. Materials Letters, 2007, vol. 61, no. 14-15, pp. 3287–3291.
El Azhar M., Traisnel M., Mernari B., Gengembre L., Bentiss F., Lagrene M. Electrochemical and XPS studies of 2,5-bis(n-pyridyl)-1,3,4-thiadiazoles adsorption on mild steel in perchloric acid solution. Applied Surface Science, 2002, vol. 185, no. 3-4, pp. 197–205.
Finšgar M., Milošev I. Inhibition of copper corrosion by 1,2,3-benzotriazole: A review. Corrosion Science, 2010, vol. 52, no. 9, pp. 2737–2749.
Richards C.A.J., McMurray H.N., Williams G. Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments. Corrosion Science, 2019, vol. 154, pp. 101–110.
Milić S.M., Antonijević M.M. Some aspects of copper corrosion in presence of benzotriazole and chloride ions. Corrosion Science, 2009, vol. 51, no. 1, pp. 28–34.
Lang G., Ujvari M., Horanyi G. On the reduction of ClO4- ions in the course of metal dissolution in HClO4 solutions. Corrosion Science, 2003, vol. 45, no. 1, pp. 1–5.
Bentiss F., Traisnel M., Chaibi N., Mernari B., Vezin H., Lagren M. 2,5-Bis(n-methoxyphenyl)-1,3,4-oxadiazoles used as corrosion inhibitors in acidic media: correlation between inhibition efficiency and chemical structure. Corrosion Science, 2002, vol. 44, no. 10, pp. 2271–2289.
Zhao Y., Pan T., Yu X., Chen D. Corrosion inhibition efficiency of triethanolammonium dodecylbenzene sulfonate on Q235 carbon steel in simulated concrete pore solution. Corrosion Science, 2019, vol. 158, p. 108097.
Oliveira V.B., Viera L.R., Lima B.D.A., Avila P.R.T., Rêgo G.C., Pinto H.C., Bastos I.N., da Silva E.P. Corrosion behavior of as-cast ZK60 alloy modified with rare earth addition in sodium sulfate medium. Corrosion Science, 2019, vol. 158, p. 108092.
Isakhani-Zakaria M., Allahkaram S.R., Ramezani-Varzaneh H.A. Evaluation of corrosion behaviour of Pb-Co3O4 electrodeposited coating using EIS method. Corrosion Science, 2019, vol. 157, pp. 472–480.
Zhang H.-H., Pang X., Gao K. Effect of surface roughness on the performance of thioureido imidozaline inhibitor in CO2-saturated brine. Corrosion Science, 2019, vol. 157, pp. 189–204.
Chukwuike V.I., Sankar S.S., Kundu S., Barik R.C. Capped and uncapped nickel tungstate (NiWO4) nanomaterials: A comparison study for anti-corrosion of copper metal in NaCl solution. Corrosion Science, 2019, vol. 158, p. 108101.
The authors who publish their manuscripts in “Vektor Nauki of Togliatti State University” Journal agree that:
- When submitting a manuscript to the Editors of “Vektor Nauki of Togliatti State University” Journal, the author accepts that the Editors have the exclusive property rights for the paper use (material submitted to the Editors including such protected by the copyright law objects as figures, charts, tables, etc.), including the rights for reproduction in print and on the Internet; distribution; translation of the materials into English.
- The author guarantees that (s)he has exclusive copyright for the material submitted to the Editors. Shall this guarantee be violated and shall the Editors receive any complaints or claims as a result, the Author shall settle all claims and complaints at his/her own and at his/her expense. The Editors shall not be held liable to a third party for violation of the guarantees given by the Author.
- The Author shall retain the right to use his/her published material, its fragments and paragraphs for personal and teaching purposes. Copying the materials published in the journal can only be allowed to other individuals or legal entities by a written consent from the Editors with a reference to the particular issue (year of publishing) in which the material was published.