Investigation of the structure of ceramic gas-resistant gas-plasma coating by methods of light and stroke electronic microscopy

Authors

  • V. I. Bol'shakov State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture”, Ukraine https://orcid.org/0000-0002-2624-4666
  • G. D. Sukhomlin State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture”, Ukraine
  • F. F. Vashkevich State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture”, Ukraine
  • A. Ya. Spilnyk State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture”, Ukraine
  • O. B. Zagorodniy State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture", Ukraine
  • V. I. Zhuravel State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture", Ukraine

DOI:

https://doi.org/10.30838/J.PMHTM.2413.240418.43.104

Keywords:

ceramic composite material, plasma spraying, , thermal protective coating, combustion chamber, gas turbine engine

Abstract

Purpose. The main goal of the research was to establish the essence and sequence of development of the main processes responsible for the formation of the thermal insulation layer, the regularities of the phenomena and the results of their influence on the properties of the ceramic coating. Methodology. The structure of the sprayed ceramic heat-resistant gas-flame coating was studied by metallographic methods and scanning electron microscopy. The particle orientation coefficient was determined by the secant method. Results. The structure of a ceramic heat-resistant gas-plasma coating was studied, it was established that it consists of two types of nanoscale particles: plane lobes 200-950 nm in thickness and dispersed spherical particles with a diameter of up to 800 nm. Numerous voids up to 300 nm thick between the petals and nanospheres impart high thermal insulation properties to the coating. Scientific novelty. The scheme of the formation of layered structures for the spreading of drops of sputtered molten spinel material was proposed for the first time. Practical significance. The established regularities of the phenomena responsible for the formation of the heat-insulating layer allow to influence on the properties of the ceramic coating, and also contribute to the improvement of the technological process of plasma spraying the parts of the combustion chamber of the gas turbine engine.

Author Biographies

V. I. Bol'shakov, State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture”

Department of materials science and materials processing, Dr. Sc. (Tech.), Prof.

G. D. Sukhomlin, State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture”

Department of materials science and materials processing, Dr. Sc. (Tech.), Prof.

F. F. Vashkevich, State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture”

Department of materials science and materials processing, Ph. D., Ass. Prof.

A. Ya. Spilnyk, State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture”

Department of materials science and materials processing, Ph. D., Ass. Prof.

O. B. Zagorodniy, State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture"

Department of materials science and materials processing, Ass.

V. I. Zhuravel, State Higher Education Establishment “Pridnіprovsk State Academy of Civil Engineering and Architecture"

Department of materials science and materials processing, Sen. Res.

References

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REFERENCES

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Bolshakov V.I., Zaitsev A.V., Sukhomlin H.D. and Vashkevich F.F. Osobennosty prymenenyia svetovoi y эlektronnoi mykroskopyy pry yzuchenyy strukturoobrazovanyia pokrytyi [Features of the application of light and electron microscopy in the study of the structure of coatings]. Metaloznavstvo ta termichna obrobka metaliv [Metal Science and Heat Treatment of Metals]. 2007, no. 1, pp. 7−12. (in Russian).

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Published

2018-04-10

Issue

No. 1 (2018): Metal Science and Heat Treatment of Metals

Section

Technical science

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