cvmetИзвестия вузов. Цветная металлургияIzvestiya. Non-Ferrous Metallurgy0021-34382412-8783НИТУ МИСИС10.17073/0021-3438-2024-3-87-96cvmet-1635Research ArticleКоррозия и защита металловCorrosion and Protection of MetalsВысокоэнтропийные покрытия Fe–Co–Cr–Ni–(Cu) с повышенной коррозионной и трибокоррозионной стойкостью, полученные электроискровым легированием в вакуумеHigh-entropy Fe–Co–Cr–Ni–(Cu) coatings with enhanced corrosion and tribocorrosion resistance obtained by vacuum electrospark depositionhttps://orcid.org/0000-0001-6817-5999ФатыховаМ. Н.FatykhovaN.

Мария Николаевна Фатыхова – к.т.н., мл. науч. сотрудник Научно-учебного центра (НУЦ) СВС МИСИС– ИСМАН

119049, г. Москва, Ленинский пр-т, 4, стр. 1

Mariya N. Fatykhova – Cand. Sci. (Eng.), Junior Researcher of the Scientific-Educational Center of SHS (SHS-Center) of MISIS–ISMAN

4 Bld. 1 Leninskiy Prosp., Moscow 119049

mariya.antonyuck@ya.ruhttps://orcid.org/0000-0003-2585-0733КупцовК. А.KuptsovK. A.

Константин Александрович Купцов – к.т.н., ст. науч. сотрудник НУЦ СВС МИСИС–ИСМАН

119049, г. Москва, Ленинский пр-т, 4, стр. 1

Konstantin A. Kuptsov – Cand. Sci. (Eng.), Senior Researcher of SHS-Center of MISIS–ISMAN

4 Bld. 1 Leninskiy Prosp., Moscow 119049

kuptsov.k@gmail.comhttps://orcid.org/0000-0003-3704-515XШевейкоА. Н.SheveykoA. N.

Александр Николаевич Шевейко – науч. сотрудник НУЦ СВС МИСИС–ИСМАН

119049, г. Москва, Ленинский пр-т, 4, стр. 1

Aleksanr N. Sheveyko – Researcher of SHS-Center of MISIS–ISMAN

4 Bld. 1 Leninskiy Prosp., Moscow 119049

sheveyko@mail.ruГизатуллинаА. Р.GizatullinaA. R.

Альфина Рустемовна Гизатуллина – лаборант-исследователь НУЦ СВС МИСИС–ИСМАН

119049, г. Москва, Ленинский пр-т, 4, стр. 1

Alfina R. Gizatullina – Research Assistant of SHS-Center of MISIS–ISMAN

4 Bld. 1 Leninskiy Prosp., Moscow 119049

alfina.gizatullina@yandex.ruhttps://orcid.org/0000-0003-2505-2918ЛогиновП. А.LoginovP. A.

Павел Александрович Логинов – к.т.н, ст. преподаватель кафедры «Порошковая металлургии и функциональные покрытия»; ст. науч. сотрудник лаборатории «In situ диагностика структурных превращений» НУЦ СВС МИСИС–ИСМАН

119049, г. Москва, Ленинский пр-т, 4, стр. 1

Pavel A. Loginov – Cand. Sci. (Eng.), Senior Lecturer of the Department of Powder Metallurgy and Functional Coating; Senior Research Scientist of the Laboratory “In situ Diagnostics of Structural Transformations” of SHS-Center of MISIS–ISMAN

4 Bld. 1 Leninskiy Prosp., Moscow 119049

pavel.loginov.misis@list.ruhttps://orcid.org/0000-0001-7304-2461ШтанскийД. В.ShtanskyD. V.

Дмитрий Владимирович Штанский – д.ф.-м.н., зав. Научно-исследовательским центром «Неорганические наноматериалы»; гл. науч. сотрудник НУЦ СВС МИСИС–ИСМАН

119049, г. Москва, Ленинский пр-т, 4, стр. 1

Dmitriy V. Shtansky – Dr. Sci. (Phys.-Math.), Head of the Research Center “Inorganic Nanomaterials”; Chief Researcher of SHS-Center of MISIS–ISMAN

4 Bld. 1 Leninskiy Prosp., Moscow 119049

shtansky@shs.misis.ruНациональный исследовательский технологический университет «МИСИС»РоссияNational University of Science and Technology “MISIS”Russian Federation2024031020243038796Copyright © Фатыхова М.Н., Купцов К.А., Шевейко А.Н., Гизатуллина А.Р., Логинов П.А., Штанский Д.В., 20242024Фатыхова М.Н., Купцов К.А., Шевейко А.Н., Гизатуллина А.Р., Логинов П.А., Штанский Д.В.Фатыхова М.Н., Kuptsov K.A., Sheveyko A.N., Gizatullina A.R., Loginov P.A., Shtansky D.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://cvmet.misis.ru/jour/article/view/1635

Высокоэнтропийные покрытия представляют большой интерес для защиты стальных изделий, используемых в прибрежной и морской инфраструктуре, от коррозионного и трибокоррозионного воздействия. В данной работе исследованы свойства средне- и высокоэнтропийных покрытий Fe–Co–Cr–Ni–(Cu), полученных методом электроискрового легирования в вакууме. Показано, что покрытия толщиной до 30 мкм с различным содержанием меди характеризуются структурой однофазного твердого раствора с ГЦК-решеткой и плотной, однородной морфологией. Выявлено, что введение 14 ат.% Cu положительно влияет на коррозионную стойкость, смещая потенциал коррозии до 100 мВ. В условиях трения в искусственной морской воде добавление меди также улучшает трибокоррозионные свойства, повышая потенциал коррозии во время трения до –165 мВ. Это обусловлено гальваническим осаждением растворенной меди на изношенные части покрытия, что также положительно сказывается на коэффициенте трения, снижая его с 0,37 до 0,26. Полученные покрытия Fe–Co–Cr–Ni–(Cu) обладают высокой износостойкостью на уровне (5,6÷9,6)·10–6 мм3/(Н·м). Результаты исследования подтверждают перспективность их использования в условиях трения и коррозии.

High-entropy coatings are highly promising for protecting steel parts in coastal and marine infrastructure from corrosion and tribocorrosion. This study examines the properties of medium- and high-entropy Fe–Co–Cr–Ni–(Cu) coatings produced by vacuum electrospark deposition. The coatings, with thicknesses of up to 30 μm and varying copper content, exhibit a single-phase solid solution structure with an FCC lattice and a dense, homogeneous morphology. The addition of 14 at.% Cu was found to enhance corrosion resistance, shifting the corrosion potential to 100 mV. In friction conditions within artificial seawater, the inclusion of copper also improved tribocorrosion properties, raising the corrosion potential during friction to –165 mV. This improvement is attributed to the galvanic deposition of dissolved copper on the worn areas of the coating, which also reduces the friction coefficient from 0.37 to 0.26. The Fe–Co–Cr–Ni–(Cu) coatings demonstrate high wear resistance, ranging from 5.6 to 9.6·10–6 mm3/(N·m). The findings confirm the potential of these coatings for applications in environments subject to both friction and corrosion.

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The authors declare that there are no conflicts of interest present.