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Abstract
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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Schedule a callMore From: Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya (Proceedings of Higher Schools. Powder Metallurgy аnd Functional Coatings)
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