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Formation of intermetallic coatings by electrospark deposition of titanium and aluminum on a steel substrate

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Abstract

This paper deals with the formation of titanium aluminide coatings by electrospark deposition and the investigation of their properties. The coatings were prepared by the sequential deposition of titanium and aluminum onto steel 35 in various atmospheres (argon, air). It has been established that the TiAl3 and Al3Ti0.75Fe0.25 intermetallics are formed as a result of the alloying of the surface layer on the steel substrate. The preferred deposition arrangement is “titanium-aluminum.” Titanium nitride and aluminum oxide have been detected in coatings deposited in air. The protective coatings allowed us to increase the wear resistance of the steel substrate 3–4 times, and the heat resistance, 11–16 times.

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Correspondence to S. A. Pyachin.

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Original Russian Text © S.A. Pyachin, A.A. Burkov, 2015, published in Elektronnaya Obrabotka Materialov, 2015, No. 2, pp. 16–23.

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Pyachin, S.A., Burkov, A.A. Formation of intermetallic coatings by electrospark deposition of titanium and aluminum on a steel substrate. Surf. Engin. Appl.Electrochem. 51, 118–124 (2015). https://doi.org/10.3103/S1068375515020131

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  • DOI: https://doi.org/10.3103/S1068375515020131

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