The Paton Welding Journal, 2006, №07

2006 №07 (03)

2006 №07 (05)

---

The Paton Welding Journal, 2006, #7, 22-25 pages

Aluminoceramic plasma coatings

Yu.S. Borisov¹, V.F. Golnik¹, Z.G. Ipatova¹, I.V. Mits¹, A.G. Saakov², V.A. Saakov²

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
²Research and Production Company TOPAS, Kiev, Ukraine

Abstract
Aluminoceramic plasma coatings produced by spraying composite powders (mixture of aluminium and iron titanium) were developed. The plasma spraying process was proved to provide coatings containing intermetallic inclusions with microhardness of about 11000 MPa. Aluminoceramic coatings of composite powders with 35–45 wt.% FeOTiO2 have a maximal adhesion strength (45-50 MPa), and those with 25 wt.% FeO TiO2 have the highest resistance to gas-abrasive wear (at all attack angles). Corrosion current density of the coatings of composite powders with 45 wt.% FeO-TiO2 in sea water is minimal (4.0-10-7 А/cm2). Wear in sliding friction is 10 times lower for a friction pair (steel 30KhGSA + coating) with 45 wt.% FeO TiO2.
Keywords: plasma spraying, aluminoceramic coatings, composite powders, exothermic interaction, differential thermal analy¬sis, structure of coatings, adhesion strength, gas-abrasive wear, corrosion resistance, wear resistance, protection of pipelines

References

1. Borisov, Yu.S., Kharmalov, Yu.A., Sidorenko, S.L. et al. (1987) Powder thermal coatings: Refer. Book. Kiev: Naukova Dumka.
2. GOST 9.304-87 (ST СМЕЛ 4202-83): Thermal coatings. General requirements and testing methods.
3. Hasui, A., Morigaki, O. (1985) Surfacing and spraying. Moscow: Mashinostroenie.
4. Hansen, M., Anderko, K. (1962) Structures of binary al¬loys. Moscow: Chorn. i Tsv. Metallurgia.
5. Veryatin, U.D., Mashirev, V.P., Ryabtsev, I.G. et al. (1965) Thermodynamic properties of inorganic materials: Refer. Book. Moscow: Atomizdat.
6. Kubashevsky, O., Evans, E. (1954) Thermochemistry in metallurgy. Moscow: Inostr. Literatura.
7. Sinelnikova, V.S., Podergin, V.A., Rechkin, V.N. (1965) Aluminides. Kiev: Naukova Dumka.
8. Zverev, A.I., Sharivker, S.Yu., Astakhov, E.A. (1979) Detonation spraying of coatings. Leningrad: Sudostroenie.
9. Kulik, A.Ya., Borisov, Yu.S., Mnukhin, A.S. et al. (1985) Thermal spraying of composite powders. Leningrad: Mashinostroenie.
10. Frejman, L.L, Makarov, V.A., Bryksin, I.E. (1972) Potentiostatic methods in corrosion investigations and electro¬chemical protection. Leningrad: Khimiya.
11. Rejngeverts, M.D., Semenyuk, Z.Ya. (1982) Computer processing of polarization curves for determination of corrosion rate. Zashchita Metallov, 18(5), 807–809.
12. Petrov, S.V., Saakov, A.G., Sirotinsky, A.A. et al. (2000) Aluminoceramics protects ferrous metals. Metally, 9, 34–36.

---

Suggested Citation

Yu.S. Borisov, V.F. Golnik, Z.G. Ipatova, I.V. Mits, A.G. Saakov, V.A. Saakov (2006) Aluminoceramic plasma coatings. The Paton Welding J., 07, 22-25.

---