cpomaemКоррозия: защита материалов и методы исследованийTitle in englishИФХЭ РАН10.61852/2949-3412-2024-2-1-23-40cpomaem-38Research ArticleСтатьиСтроение и свойства защитных пленок олеиновой кислоты при контактной и камерной защите металлов. 1. МагнийStructure and properties of protective films of oleic acid for contact and chamber protection of metals. 1. MagnesiumКузнецовИ А.KuznetsovI. A.

119071, г. Москва, Ленинский проспект, д. 31, корп. 4

Leninsky pr. 31, 119071 Moscow

ГончароваО. А.GoncharovaO. A.

119071, г. Москва, Ленинский проспект, д. 31, корп. 4

Leninsky pr. 31, 119071 Moscow

ЧиркуновА. А.ChirkunovA. A.

119071, г. Москва, Ленинский проспект, д. 31, корп. 4

Leninsky pr. 31, 119071 Moscow

ЛучкинА. Ю.LuchkinA. Yu.

119071, г. Москва, Ленинский проспект, д. 31, корп. 4

Leninsky pr. 31, 119071 Moscow

ЛучкинаВ. А.LuchkinaV. A.

119071, г. Москва, Ленинский проспект, д. 31, корп. 4

Leninsky pr. 31, 119071 Moscow

АндреевН. Н.AndreevN. N.

119071, г. Москва, Ленинский проспект, д. 31, корп. 4

Leninsky pr. 31, 119071 Moscow

n.andreev@mail.ruКузнецовЮ. И.KuznetsovYu. I.

119071, г. Москва, Ленинский проспект, д. 31, корп. 4

Leninsky pr. 31, 119071 Moscow

Институт физической химии и электрохимии имени А.Н. Фрумкина РАН (ИФХЭ РАН)РоссияA.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of SciencesRussian Federation202411042024012340Copyright © Кузнецов И.А., Гончарова О.А., Чиркунов А.А., Лучкин А.Ю., Лучкина В.А., Андреев Н.Н., Кузнецов Ю.И., 20242024Кузнецов И.А., Гончарова О.А., Чиркунов А.А., Лучкин А.Ю., Лучкина В.А., Андреев Н.Н., Кузнецов Ю.И.Kuznetsov I.A., Goncharova O.A., Chirkunov A.A., Luchkin A.Y., Luchkina V.A., Andreev N.N., Kuznetsov Y.I.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.cpmrm.ru/jour/article/view/38

Комплексом коррозионных, электрохимических и физических методов исследованы структура и свойства защитных слоев олеиновой кислоты (ОлК), полученных контактным и камерным методом обработки магния. Показано, что обработка магния в растворе ОлК в изопропиловом спирте и в горячих парах ОлК ведет повышению коррозионной стойкости металла и торможению его анодного растворениlя. Камерная обработка (КО) более эффективна по сравнению с иммерсионной. При обоих вариантах обработки магния ОлК формирует на поверхности защитные пленки приблизительно одинаковой толщины, имеющие, тем не менее, разную структуру. При окунании магния в раствор ОлК на нем формируются почти сливающиеся друг с другом округлые агломераты. В случае КО поверхностные пленки имеют сетчатую структуру. Защитное действие ОлК связано с пассивацией магния. Однако при КО пассивные пленки характеризуются большими значениями потенциала питтиногообразования и противопиттингового базиса в хлоридсодержащих электролитах. Оба варианта ингибирования коррозии магния характеризуются смешанным блокировочно– активационным механизмом. При этом в случае КО активационный механизм доминирует. 

Using a complex of corrosion, electrochemical and physical methods, the structure and properties of protective layers of oleic acid (OlA) obtained by contact and chamber processing of magnesium were studied. It has been shown that the treatment of magnesium in a solution of OlK in isopropyl alcohol and in hot vapor of OlK leads to an increase in the corrosion resistance of the metal and inhibition of its anodic dissolution. Chamber processing (CT) is more effective compared to immersion. With both methods of processing magnesium, OlK forms protective films on the surface of approximately the same thickness, which, however, have a different structure. When magnesium is dipped into an OlK solution, rounded agglomerates are formed on it, almost merging with each other. In the case of CO, the surface films have a network structure. The protective effect of OLC is associated with the passivation of magnesium. However, during CO, passive films are characterized by high values of pitting potential and anti-pitting basis in chloride-containing electrolytes. Both options for inhibiting magnesium corrosion are characterized by a mixed blocking and activation mechanism. Moreover, in the case of CR, the activation mechanism dominates. 

магнийингибиторы коррозииолеиновая кислотаАСМСЭИmagnesiumcorrosion inhibitorsoleic acidAFMSEIДанное исследование выполнено при финансовой поддержке Российского научного фонда (грант № 23-23-00092 “Разработка научных принципов самоорганизации защитных наноразмерных пленок органических ингибиторов на поверхности металлов и сплавов из парогазовой фазы”).ReferencesM. Esmaily, J.E. Svensson, S Fajardo, N. Birbilis, G.S. Frankel, S. Virtanen, R. Arrabal, S. Thomas and L.G. Johansson, Fundamentals and advances in magnesium alloy corrosion, Prog. Mater. Sci., 2017, 89, 92–193. doi: 10.1016/j.pmatsci.2017.04.011M. Esmaily, J.E. Svensson, S Fajardo, N. Birbilis, G.S. Frankel, S. Virtanen, R. Arrabal, S. Thomas and L.G. Johansson, Fundamentals and advances in magnesium alloy corrosion, Prog. Mater. Sci., 2017, 89, 92–193. doi: 10.1016/j.pmatsci.2017.04.011A.S. Gnedenkov, V.S. Filonina, S.L. Sinebryukhov and S.V. 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The authors declare that there are no conflicts of interest present.