powderИзвестия вузов. Порошковая металлургия и функциональные покрытияPowder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya)1997-308X2412-8767НИТУ "МИСИС"10.17073/1997-308X-2026-2-61-70powder-1124Research ArticleНаноструктурированные материалы и функциональные покрытияNanostructured Materials and Functional CoatingsИспользование порошков SiC и Ti для электроискрового нанесения металлокерамических покрытий на титановый сплав Ti6Al4VUse of SiC and Ti powders for electrospark deposition of cermet coatings on Ti6Al4V titanium alloyhttps://orcid.org/0000-0002-5636-4669БурковА. А.BurkovA. A.

Александр Анатольевич Бурков – к.ф.-м.н., ст. науч. сотрудник, заведующий лабораторией физико-химических основ технологии материалов

Россия, 680042, г. Хабаровск, ул. Тихоокеанская, 153

Alexandr A. Burkov – Cand. Sci. (Phys.-Math.), Senior ResearchScientist, Head of the Laboratory of Physicochemical Fundamentals of Materials Technology

153 Tikhookeanskaya Str., Khabarovsk 680042, Russia

burkovalex@mail.ruhttps://orcid.org/0000-0003-4474-5795НиколенкоС. В.NikolenkoS. V.

Сергей Викторович Николенко – д.т.н., ВРИО директора Института материаловедения

Россия, 680042, г. Хабаровск, ул. Тихоокеанская, 153

Sergey V. Nikolenko – Dr. Sci.  (Eng.), Acting Director, Institute of Materials Science

153 Tikhookeanskaya Str., Khabarovsk 680042, Russia

nicola1960@mail.ruhttps://orcid.org/0009-0005-3383-2676ШельменокН. А.ShelmenokN. A.

Наталья Алексеевна Шельменок – студентка

Россия, 680000, г. Хабаровск, ул. Пушкина, 29

Natalya A. Shelmenok – Student

29 Pushkin Str., Khabarovsk 680000, Russia

nshelmenok2003@mail.ruХабаровский федеральный исследовательский центр Дальневосточного отделения Российской академии наукРоссияKhabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of SciencesRussian FederationДальневосточный государственный медицинский университетРоссияFar Eastern State Medical UniversityRussian Federation2026050720262026170Copyright © НИТУ "МИСИС", 20262026НИТУ "МИСИС"НИТУ "МИСИС"https://powder.misis.ru/jour/about/submissions#copyrightNoticehttps://powder.misis.ru/jour/article/view/1124

Исследовано влияние соотношения порошков карбида кремния и титана, вносимых в электрод, на характер электроискрового осаждения и свойства металлокерамических Ti–Si–C-покрытий на титановом сплаве Ti6Al4V. Показано монотонное снижение привеса катода с ростом концентрации SiC в электроде. Толщина приготовленных покрытий находилась в диапазоне от 44,7 до 54,6 мкм. Установлено, что карбид кремния взаимодействует с расплавом титана в условиях низковольтного электрического разряда с образованием фаз карбида титана (TiC) и силицида титана (Ti5Si3 ). В структуре покрытий наблюдаются кристаллиты TiC и Ti5Si3 , а также небольшое количество включений исходного SiC. Показано, что включения SiC обладают слабой адгезией к α-Ti. С ростом концентрации SiC в электроде содержание углерода и кремния в покрытиях монотонно повышалось. Все покрытия обладали высокой гидрофобностью с углами смачивания водой >120°. Микротвердость покрытий находилась в диапазоне от 9,2 до 12,2 ГПа. Коэффициент трения приготовленных Ti–Si–C-покрытий был ниже по сравнению с титановым сплавом. Наибольшей твердостью и износостойкостью обладало покрытие, осажденное при содержаниях порошков карбида кремния и титана соответственно 40 и 60 об. %. Его использование позволяет повысить износостойкость деталей из сплава Ti6Al4V в 30 раз.

The effect of SiC-to-Ti powder ratio in the electrode on electrospark deposition and the properties of Ti–Si–C cermet coa­tings on Ti6Al4V titanium alloy was investigated. Cathode mass decreased monotonically with increasing in SiC content in the electrode. The resulting coatings were 44.7–54.6 µm thick. Under low-voltage electrical discharge conditions, silicon carbide reacted with titanium melt to form titanium carbide (TiC) and titanium silicide (Ti5Si3 ). The coating structure contained TiC and Ti5Si3 crystallites, together with a small amount of SiC residual inclusions. The SiC inclusions exhibited poor adhesion to α-Ti. The carbon and silicon contents of the coatings increased monotonically with increasing SiC content in the electrode. All coa­tings were highly hydrophobic, with water contact angles exceeding 120°. Their microhardness ranged from 9.2 to 12.2 GPa. The Ti–Si–C coatings had lower coefficients of friction than the uncoated titanium alloy. The coating deposited using an electrod powder mixture containing 40 vol. % SiC and 60 vol. % Ti had the highest hardness and wear resistance. This coating increased the wear resistance of Ti6Al4V alloy components by a factor of 30.

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