Influence of Air Pressure on the Properties of Arc Coatings

Keywords

arc sputtering, powder wire, electric arc coating, oxides between lamellae, oxides from powder wire

Abstract

The change in properties of coatings sprayed using the electric arc metallization method was studied. It has been found that the pressure of the air jet increases, the size of the droplets decreases, and their speed increases. It was found that a higher speed of droplets at increased air pressure helps to reduce the time of air contact with them and increase the thickness of their oxides. It was found that with such a surfacing mode of the coating, the structure improves and the mechanical properties increase.

References

1. Yushchenko K.A., Borisov Yu.S., Kuznetsov V.D., Korzh V.M. Inzheneriia Poverkhni [Surface engineering]. – Kyiv: Naukova Dumka, 2007. – 559 p.
2. Mazheyka O.H., Markovych S.I. and Ryabolyk Yu.V. The use of electric arc spraying with layer-by-layer microplasma processing when applying wear-resistant coatings // Collection of scientific works of the Kirovohrad National Technical University “Technology in agriculture, industrial engineering, automation”. – 2009. – № 22.- P. 1-4. (in Ukrainian)
3. Student M.M. The influence of the structure of electric arc coatings made of powder-coated wires on their properties // Mechanical engineering. – 2012. – № 5 (155). – P. 40-44. (in Ukrainian)
4. Markovych S.I. Increasing the wear resistance of machine parts by electric arc spraying of composite coatings using dissimilar wires: autoref. thesis: specialist 05.02.04 “Friction and wear in machines”. – 2007. – 20 p.
5. Sukhenko Yu.G. and Sukhenko V.Yu. Effectiveness of gas-thermal coatings on equipment details of processing and food industries // Scientific bulletin of NUBiP of Ukraine. – 2011. – №144. – P .10-17. (in Ukrainian)
6. Pokhmurskyi V.I., Student M.M., Dovgunyk V.M. et al. Application of electric arc metallization with powder wires of the Fe-Cr-C-Al system for restoration of machine parts // Mechanical engineering. – 1999. – № 1. – P.13-18. (in Ukrainian)
7. Pokhmurskyi V.I., Shirokov V.V., Student M.M. et al. Wear-resistant gas-thermal coatings from powder-coated wires of the Fe-Cr-Al-C system // Problems of tribology. – 1997. – № 3. – P. 48-55. (in Ukrainian)
8. Pokhmurskyi V.I., Student M.M., Dovgunyk V.M. et al. Electric arc restorative and protective coatings. – Lviv: Karpenko Physico-Mechanical Institute, 2005. – 192 p. (in Ukrainian).
9. Drzeniek H. Metallurgical aspects of arc spraying using cored wires containing ferrochrome or chromium carbide powders. – London: 12th ITSC, 1989. – P. 257-270.
10. Dallaire S. and Levert H. Synthesis and deposition of TiB2-containing materials by arc spraying // Surf. Coat. Technol. – 1992. – 50. – P. 241-248. https://doi.org/10.1016/0257-8972(92)90007-W
11. Student M.M. Development of protective and restorative electrometallization coatings using powder-coated wires: : autoref. thesis: specialist 05.02.01 “Materials Science”. – 1998. – 19 p.