A modified method of applying detonation-sprayed composite coatings by a magnetic field

Authors

DOI:

https://doi.org/10.15587/1729-4061.2016.85628

Keywords:

coating, composite material, detonation spraying, magnetic field, adhesion, refractory component, metal bond

Abstract

The article deals with the problem of improving the wear resistance and corrosion resistance of machine parts, which is essential for the equipment operation at high speeds and loads. The main purpose of the research was to study ceramic composite materials, which are highly resistant to the intensive wear and adverse environment. It has been established that these requirements are met by ceramic composites based on silicon carbide and aluminum oxide, which have high levels of physical and mechanical properties while being inexpensive and common materials. The selected component of the composite wear-resistant coating for detonation-sprayed coatings was the SiC-Al2O3 ceramic structure, previously tested as a compact ceramic material with a high level of tribotechnical characteristics. It is definite that the strengthening carbide phase of an active interaction with single-component melts takes place with silicide formation under hot pressing. During the charge agglomeration to apply the coating, the SiC-Al2O3 ceramic phase becomes ground as being more friable, but the artificially introduced metal component is plastically deformed without changing the size. The study has revealed a positive effect on the process of applying and the structure of composite detonation-sprayed coatings of the system (SiC-Al2O3)-Fe produced by an external constant magnetic field, which improves the coating porosity 1.5 times and enhances the coating adhesion 5 times. Moreover, a constant magnetic field in the process of applying the coating significantly decreases the coating porosity. The research results can be applied by experts in the fields of tribology, materials specialists, and experts in the field of operating and maintaining technical systems.

Author Biographies

Andriy Dovgal, National Aviation University Kosmonavta Komarova str., 1, Kyiv, Ukraine, 03058

PhD, Associate Professor

Department of Airport Technologies 

Liudmyla Pryimak, National Aviation University Kosmonavta Komarova str., 1, Kyiv, Ukraine, 03058

PhD, Associate professor

Department of Airport technologies 

Igor Trofimov, National aviation university Kosmonavta Komarova str., 1, Kyiv, Ukraine, 03058

PhD, Associate Professor

Department of ecology

 

References

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Published

2016-12-27

How to Cite

Dovgal, A., Pryimak, L., & Trofimov, I. (2016). A modified method of applying detonation-sprayed composite coatings by a magnetic field. Eastern-European Journal of Enterprise Technologies, 6(5 (84), 33–38. https://doi.org/10.15587/1729-4061.2016.85628

Issue

Vol. 6 No. 5 (84) (2016): Applied physics. Materials Science

Section

Materials Science

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Copyright (c) 2016 Andriy Dovgal, Liudmyla Pryimak, Igor Trofimov

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