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Title: The influence of $Ce^{3+}$ ions on the corrosion rate of stainless steel in acidic solutions of different pH-values Petek, Aljana (Author)Kovačič, Sebastijan (Author) Green_Chemistry_Letters_and_Reviews_2014_Petek,_Kovacic_The_influence_of_Ce_3_ions_on_the_corrosion_rate_of_stainless_steel_in_acidic_so.pdf (463,32 KB)MD5: ED283B9720E150A3BD331E6277D7AD2F  http://www.tandfonline.com/doi/abs/10.1080/17518253.2014.952684 English Scientific work (r2) 1.01 - Original Scientific Article FKKT - Faculty of Chemistry and Chemical Engineering The corrosion resistance of AISI 420 stainless steel in 0.1 mol $L^{−1}$ $H_2SO_4$ + 0.1 mol $L^{−1}$ $Na_2SO_4$ solutions at different pH-values and the inhibiting effect of $Ce^{3+}$ ions was studied using electrochemical polarization methods. The results reveal decreasing of the corrosion rate with an increasing the pH of the solution, which demonstrates the progressive protective character of the inhibitor used. At pH lower than 3.33, the corrosion inhibition was most probably a result of the competitive adsorption of $Ce^{3+}$ with $H^+$ ions on the cathodic sites of the electrode surface, and it was found to be dependent on the relative concentration of $H^+$/$Ce^{3+}$. The peroxide generated from the oxygen reduction reaction at pH 3.33 was found to be capable oxidize trivalent cerium (Ce) to the tetravalent state. As obtained hydroxide precipitates act as diffusion barrier hindering the corrosion processes, whereafter a spontaneous passivity occurs on the steel surface at this pH. acid corrosion, green corrosion inhibitor, stainless steel, electrochemical techniques 2014 str. 337-341 št. 4, Letn. 7 1751-8253 665.7.038.5 1751-8253 18054678 10.1080/17518253.2014.952684 URN:SI:UM:DK:CPAW1AVB 590 251 Misc.

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Record is a part of a journal

Title: Green Chemistry Letters and Reviews Green Chem. Lett. Rev. Taylor & Francis Group 1751-8253 24983079

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License: CC BY 4.0, Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author. 24.07.2017

Secondary language

Language: Slovenian kislostna korozija, zeleni inhibitor za korozijske procese, nerjaveče jeklo, elektrokemijske tehnike