The use of titanium aluminides to form electric-spark coatings
- Authors: Pyachin S.A.1, Ershova T.B.1, Burkov A.A.1, Vlasova N.M.1, Komarova V.S.2
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Affiliations:
- Institute of Materials Science, Khabarovsk Research Center, Far East Division
- Institute of Tectonics and Geophysics, Far East Division
- Issue: Vol 57, No 3 (2016)
- Pages: 266-272
- Section: Nanostructured Materials and Functional Coatings
- URL: https://journals.rcsi.science/1067-8212/article/view/225935
- DOI: https://doi.org/10.3103/S1067821216030135
- ID: 225935
Cite item
Abstract
Titanium aluminides (TiAl3, TiAl, Ti3Al) fabricated by powder metallurgy were used as alloying electrodes for the formation of electric-spark coatings. Intermetallic coatings were deposited on steel substrates in argon or nitrogen. The microstructure and composition of fabricated coatings were investigated by scanning electron microscopy, X-ray structural analysis, and electron probe microanalysis. It is established that initial Ti–Al intermetallic phases are present in fabricated coatings; however, the ratio between Ti and Al concentrations is shifted to aluminum compared with the stoichiometric one. When depositing titanium aluminide in the nitrogen medium, titanium nitride is additionally formed in surface layers. Thermal and tribotechnical tests showed that the Ti3Al coating deposited in nitrogen possesses high wear resistance and heat resistance.
About the authors
S. A. Pyachin
Institute of Materials Science, Khabarovsk Research Center, Far East Division
Author for correspondence.
Email: pyachin@mail.ru
Russian Federation, ul. Tikhookeanskaya 153, Khabarovsk, 680042
T. B. Ershova
Institute of Materials Science, Khabarovsk Research Center, Far East Division
Email: pyachin@mail.ru
Russian Federation, ul. Tikhookeanskaya 153, Khabarovsk, 680042
A. A. Burkov
Institute of Materials Science, Khabarovsk Research Center, Far East Division
Email: pyachin@mail.ru
Russian Federation, ul. Tikhookeanskaya 153, Khabarovsk, 680042
N. M. Vlasova
Institute of Materials Science, Khabarovsk Research Center, Far East Division
Email: pyachin@mail.ru
Russian Federation, ul. Tikhookeanskaya 153, Khabarovsk, 680042
V. S. Komarova
Institute of Tectonics and Geophysics, Far East Division
Email: pyachin@mail.ru
Russian Federation, ul. Kim-Yu-Chena, Khabarovsk, 680000
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