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-2015-4-59-70powder-158Research ArticleНаноструктурированные материалы и функциональные покрытияNanostructured Materials and Functional CoatingsКинетика осаждения, структура и свойства электроискровых покрытий Cr–Al–Si–B на жаропрочном никелевом сплавеKinetics of deposition, structure, and properties of Cr–Al–Si–B electric-discharge coatings on refractory nickel alloyКудряшовА. Е.KudryashovA. E.

канд. техн. наук, вед. науч. сотр. Научно-учебного центра (НУЦ) СВС МИСиС–ИСМАН (119049, г. Москва, Ленинский пр-т, 4). Тел./факс: (495) 955-00-26

Ph. D., leading research scientist of Scientific-educational centre SHS MISIS–ISMAN (119049, Russia, Moscow, Leninsky prospect, 4). Tel./fax: (495) 955-00-26

aekudr@rambler.ruЛебедевД. Н.LebedevD. N.

аспирант НУЦ СВС МИСиС–ИСМАН. Тел./факс: (495) 955-00-26

postgraduate student of Scientific-educational centre SHS MISIS–ISMAN. Tel./fax: (495) 955-00-26

nikolovich92@bk.ruПотанинА. Ю.PotaninA. Yu.

канд. техн. наук, мл. науч. сотр. НУЦ СВС МИСиС–ИСМАН. Тел.: (499) 237-53-36

Ph. D., junior researcher of Scientific-educational centre SHS MISIS–ISMAN. Tel.: (499) 237-53-36

a.potanin@inbox.ruШвындинаН. В.ShvyndinaN. V.

вед. инженер НУЦ СВС МИСиС–ИСМАН. Тел.: (495) 638-44-42.

leading engineer of Scientific-educational centre SHS MISIS–ISMAN. Tel.: (495) 638-44-42

natali19-03@list.ruСухоруковаИ. В.SukhorukovaI. V.

инженер науч.-иссл. лаборатории неорганических наноматериалов МИСиС. Тел.: (495) 638-44-47

engineer of Scientific-research laboratory of inorganic nanomaterials, MISIS (119049, Russia, Moscow, Leninsky prospect, 4). Tel.: (495) 638-44-47.

irina_btnn@mail.ruШтанскийД. В.ShtanskyD. V.

докт. физ.-мат. наук., проф. кафедры порошковой металлургии и функциональных покрытий МИСиС, гл. науч. сотр. НУЦ СВС МИСиС–ИСМАН. Тел.: (499) 236-66-29

Dr. Sci. (Phys.-Math.), professor of the Department of powder metallurgy and functional coatings MISIS, chief research scientist of Scientific-educational centre SHS MISIS–ISMAN. Tel.: (499) 236-66-29

shtansky@shs.misis.ruЛевашовЕ. А.LevashovE. A.

докт. техн. наук., проф., акад. РАЕН, зав. кафедрой порошковой металлургии и функциональных покрытий МИСиС, директор НУЦ СВС МИСиС–ИСМАН. Тел.: (495) 638-45-00

Dr. Sci. (Tech.), prof., acad. of RANS, head of Department of powder metallurgy and functional coatings MISIS, head of Scientific-educational centre SHS MISIS–ISMAN. Tel.: (495) 638-45-00

levashov@shs.misis.ruНациональный исследовательский технологический университет «МИСиС», г. МоскваRussian Federation201517122015045970Copyright © НИТУ "МИСИС", 20152015НИТУ "МИСИС"НИТУ "МИСИС"https://powder.misis.ru/jour/about/submissions#copyrightNoticehttps://powder.misis.ru/jour/article/view/158

Исследована кинетика осаждения электроискровых покрытий на жаропрочном никелевом сплаве ЭП718-ИД при использовании трех составов СВС-электродов системы Cr–Al–Si–B. Установлен оптимальный частотно-энергетический режим нанесения (Е = 0,048 Дж, I = 120 A, f = 3200 Гц, τ = 20 мкс), характеризующийся минимальной величиной эрозии электрода при удовлетворительной скорости осаждения покрытий. Проведены комплексные исследования структуры, фазового состава и свойств покрытий. Показано, что электроискровые покрытия, сформированные электродами Cr–Al–Si–B, заметно повышают твердость, жаростойкость и износостойкость никелевого сплава ЭП718-ИД и могут быть рекомендованы для защиты поверхности ответственных деталей и узлов из никелевых сплавов.

The deposition kinetics of electrospark coatings on EP718-ID heatproof nickel alloy is investigated using three compositions of SHS electrodes of the Cr–Al–Si–B system. The optimal frequency–energy deposition mode (Е = 0,048 J, I = 120 A, f = 3200 Hz, and τ = = 20 μs), which is characterized by a minimal electrode erosion with the satisfactory coating deposition rate, is established. Complex investigations into the structure, phase composition, and properties of coatings are performed. It is shown that electrospark coatings formed by Cr–Al–Si–B electrodes noticeably increase hardness, heat resistance, and wear resistance of EP718-ID nickel alloy and can be recommended to protect the surface of important parts and units made of nickel alloys.

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