The Paton Welding Journal, 2000, №11

2000 №11 (06)

2000 №11 (08)

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The Paton Welding Journal, 2000, #11, 31-36 pages

High-temperature tribological properties of thermal spray coatings containing solid lubricants

A.L. Borisova, A.Yu. Tunik, G.M. Grigorenko, V.A. Kostin, E.A. Astakhov

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Results of investigations of tribological properties of thermal spray coatings containing solid lubricants under conditions of dry friction and increased temperatures are given. Addition of solid lubricants (Fe_mO_n or CaF₂) to the cast iron based coatings allows a substantial improvement in their anti-friction properties at increased temperatures. Friction coefficient of detonation coatings with Fe_mO_n at 400 ^oC is decreased 1.5 times and that of plasma coatings with CaF₂ is decreased 3 times, as compared with friction coefficient of cast iron. Wear resistance, respectively, is increased by 30 % on the average.
Keywords: thermal spray coatings, solid lubricants, dry friction, wear resistance

References

1. Borisova, A.L., Adeeva, L.I., Tunik, A.Yu. et al. (1999) Structure and properties of thermal spray coatings based on titanium carbide and titanium-chromium oxides, containing solid lubricants. Avtomaticheskaya Svarka, 1, 22 - 31.
2. Borisova, A.L., Adeeva, L.I., Tunik, A.Yu. et al. (1999) Anti-friction thermal spray coatings of mechanical mixtures of cast iron and calcium fluoride powders. Ibid., 7, 20 - 29.
3. Borisova, A., Borisov, Y., Tunik, A. et al. (1999) Thermal spraying of coatings containing solid lubricants. In: Proc, of the 1st Un. Thermal Spray Conf., Aachen, Germany, March 1999.
4. Grinkevich, K.E., Latsko, D.V., Yefimov, N.A. (1996) Investigation of the influence of laser treatment and dynamic force effect on tribological and physical properties of steel Kh18N10T. Problemy Tribologii, 2, 23 - 31.
5. Kragelsky, I.V., Dobychin, M.N., Kombalov, V.S. (1977) Principles of friction and wear calculations. Moscow: Mashinostroyeniye.
6. Lekarev, Yu.G., Maksimov, V.V., Barvinok, V.A. et al. (1988) Anti-friction plasma coatings based on composite materials «metal-solid lubricant». In: Transact, on Diffusion Saturation and Coatings on Metals. Kyiv: IPM.

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Suggested Citation

A.L. Borisova, A.Yu. Tunik, G.M. Grigorenko, V.A. Kostin, E.A. Astakhov (2000) High-temperature tribological properties of thermal spray coatings containing solid lubricants. The Paton Welding J., 11, 31-36 .

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