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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">powder</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Порошковая металлургия и функциональные покрытия</journal-title><trans-title-group xml:lang="en"><trans-title>Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1997-308X</issn><issn pub-type="epub">2412-8767</issn><publisher><publisher-name>НИТУ "МИСИС"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/1997-308X-2023-4-51-58</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-850</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Наноструктурированные материалы и функциональные покрытия</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Nanostructured Materials and Functional Coatings</subject></subj-group></article-categories><title-group><article-title>Электроискровое осаждение покрытий Fe–Cr–Cu на сталь Ст3</article-title><trans-title-group xml:lang="en"><trans-title>Electrospark deposition of Fe–Cr–Cu coatings on St3 steel</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5636-4669</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бурков</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Burkov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Анатольевич Бурков – к.ф.-м.н., ст. науч. сотрудник, заведующий лабораторией физико-химических основ технологии материалов</p><p>Россия, 680042, г. Хабаровск, ул. Тихоокеанская, 153</p></bio><bio xml:lang="en"><p>Aleksandr A. Burkov – Cand. Sci. (Phys.-Math.), Senior Researcher, Head of the Laboratory of Physical and Chemical Fundamentals of Materials and Technology</p><p>153 Tikhookeanskaya Str., Khabarovsk 680042, Russia</p></bio><email xlink:type="simple">burkovalex@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4857-1887</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кулик</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulik</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мария Андреевна Кулик – мл. науч. сотрудник лаборатории физико-химических основ технологии материалов</p><p>Россия, 680042, г. Хабаровск, ул. Тихоокеанская, 153</p></bio><bio xml:lang="en"><p>Mariya A. Kulik – Junior Researcher of the Laboratory of Physical and Chemical Fundamentals of Materials and Technology, Institute of Materials Science</p><p>153 Tikhookeanskaya Str., Khabarovsk 680042, Russia</p></bio><email xlink:type="simple">marijka80@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт материаловедения Хабаровского федерального исследовательского центра Дальневосточного отделения РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Materials Science of the Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2023</year></pub-date><volume>17</volume><issue>4</issue><fpage>51</fpage><lpage>58</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; НИТУ "МИСИС", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">НИТУ "МИСИС"</copyright-holder><copyright-holder xml:lang="en">НИТУ "МИСИС"</copyright-holder><license xlink:href="https://powder.misis.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://powder.misis.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://powder.misis.ru/jour/article/view/850">https://powder.misis.ru/jour/article/view/850</self-uri><abstract><p>Известно, что хром в составе металлических композиций формирует плотные пассивирующие пленки, замедляющие коррозию. Новое Fe–Cr–Cu-покрытие осаждено на сталь Ст3 электроискровой обработкой в анодной смеси, состоящей из медных и титановых гранул с добавлением порошка хрома в количестве от 4,85 до 13,26 мас. %. Привес катода увеличивался почти двукратно с ростом добавки порошка хрома в анодную смесь. Структуру покрытий исследовали методами рентгенофазового анализа, сканирующей электронной микроскопии и энергодисперсионной спектрометрии. Фазовый состав покрытий представлен феррохромом и медью. Показано, что предложенная методика электроискровой обработки позволяет получать Fe–Cr–Cu-покрытия со средней концентрацией хрома от 55 до 83 ат. %. Среднее содержание меди в приготовленных покрытиях находилось в диапазоне от 5 до 16 ат. %. Наибольшая концентрация хрома наблюдалась в покрытии, приготовленном с добавкой 13,26 мас. % Cr в анодную смесь. Коррозионное поведение покрытий исследовали методами потенциодинамической поляризации и импедансной спектроскопии в 3,5 %-ном растворе NaCl. Поляризационные испытания показали, что нанесение Fe–Cr–Cu-покрытий на сталь Ст3 позволяет повысить ее коррозионный потенциал от 12 до 19 % и снизить ток коррозии от 1,5 до 3,4 раза. Микротвердость поверхности покрытий составляла от 3,08 до 4,37 ГПа, а коэффициент трения – от 0,75 до 0,91. Максимальная твердость и наименьший коэффициент трения наблюдались у покрытия с наибольшим содержанием хрома. Показано, что Fe–Cr–Cu-покрытия позволяют улучшить износостойкость поверхности стали Ст3 от 1,5 до 3,8 раз.</p></abstract><trans-abstract xml:lang="en"><p>It is well-known that chromium in metallic compositions forms dense passivating films that slow down corrosion. The new Fe–Cr–Cu coating was applied on St3 steel through electrospark deposition in an anode mixture consisting of copper and titanium granules, with the addition of chromium powder ranging from 4.85 to 13.26 wt. %. The weight gain of the cathode increased nearly twofold with the addition of chromium powder to the anode mixture. The structure of the coatings was analyzed through X-ray phase analysis, scanning electron microscopy, and energy dispersive spectrometry. The phase composition of the coatings consists of ferrochrome and copper. It is demonstrated that the proposed method of electrospark processing allows for the creation of Fe–Cr–Cu coatings with an average chromium concentration ranging from 55 to 83 at. %. The average copper content in the prepared coatings varied from 5 to 16 at. %. The highest concentration of chromium was observed in the coating prepared with the addition of 13.26 wt. % Cr to the anodic mixture. The corrosion behavior of the coatings was investigated using potentiodynamic polarization and impedance spectroscopy in a 3.5 % NaCl solution. Polarization tests have shown that applying Fe–Cr–Cu coatings to St3 steel can increase its corrosion potential by 12 to 19 % and reduce the corrosion current by 1.5 to 3.4 times. The microhardness of the coating surface ranged from 3.08 to 4.37 GPa, and the coefficient of friction ranged from 0.75 to 0.91. The maximum hardness and the lowest coefficient of friction were observed in the coating with the highest chromium content. It has been demonstrated that Fe–Cr–Cu coatings can enhance the wear resistance of the surface of St3 steel by 1.5 to 3.8 times.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>покрытия Fe–Cr–Cu</kwd><kwd>электроискровое легирование</kwd><kwd>сталь Ст3</kwd><kwd>плотность тока коррозии</kwd><kwd>коэффициент трения</kwd><kwd>твердость</kwd><kwd>износ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Fe–Cr–Cu coatings</kwd><kwd>electrospark deposition</kwd><kwd>St3 steel</kwd><kwd>corrosion current density</kwd><kwd>coefficient of friction</kwd><kwd>hardness</kwd><kwd>wear</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Министерства науки и высшего образования Российской Федерации № 075-01108-23-02 (тема № 123020700174-7 «Создание и исследование новых металлических, керамических, интер­металлидных, композиционных материалов и наноструктурных покрытий с высокими физико-химическими и эксплуатационными свойствами»).</funding-statement><funding-statement xml:lang="en">This research has received support from the Ministry of Science and Higher Education of the Russian Federation, Governmental contract No. 075-01108-23-02 “Development and study of innovative metallic, ceramic, intermetallic, composite materials and nanostructural coatings with superior physicochemical and operational properties”).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Lazorenko G., Kasprzhitskii A., Nazdracheva T. 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