20.500.12556/DKUM-66995 The influence of $Ce^{3+}$ ions on the corrosion rate of stainless steel in acidic solutions of different pH-values 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 kislostna korozija zeleni inhibitor za korozijske procese nerjaveče jeklo elektrokemijske tehnike true false true Angleški jezik Slovenski jezik Znanstveno delo 2017-07-24 11:21:56 2017-07-24 11:23:34 2022-08-01 13:25:39 2019-07-11 16:05:49 2014 0 0 str. 337-341 št. 4 Letn. 7 2014 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1751-8253 665.7.038.5 24983079 18054678 10.1080/17518253.2014.952684 1751-8253 URN:SI:UM:DK:CPAW1AVB 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 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 1 ED283B9720E150A3BD331E6277D7AD2F 997e4d1c790ffc20404a1f542e939469ff0285970db288cadadcf2fe3cb1ac9c 721f6f9f-7c0e-11eb-bb7a-00155d0001ca 20.500.12556/dkum/1a504f67-6d5e-4f73-91a6-38346cdc5bda https://dk.um.si/Dokument.php?lang=slv&id=114495 http://www.tandfonline.com/doi/abs/10.1080/17518253.2014.952684 1 https://dk.um.si/Dokument.php?lang=slv&id=114494 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0