the role of sublayer in improvement the thermal characteristics of plasma coatings

Authors

  • F. F. Vashekevich Department of Materials and Materials Processing, Pridniprovsk State Academy of Civil Engineering and Architecture, Chernyshevsky st., 24a, 49600, Dnipropetrovsk, Ukraine, Ukraine
  • A. Y. Spilnik Department of Materials and Materials Processing, Pridniprovsk State Academy of Civil Engineering and Architecture, Chernyshevsky st., 24a, 49600, Dnipropetrovsk, Ukraine, Ukraine
  • O. B. Zagorodny Department of Materials and Materials Processing, Pridniprovsk State Academy of Civil Engineering and Architecture, Chernyshevsky st., 24a, 49600, Dnipropetrovsk, Ukraine, Ukraine
  • V. I. Zuravel Department of Materials and Materials Processing, Pridniprovsk State Academy of Civil Engineering and Architecture, Chernyshevsky st., 24a, 49600, Dnipropetrovsk, Ukraine, Ukraine

Keywords:

plasma spraying, heat resistance, alpaca, combustion chamber, gas turbine engine.

Abstract

Purpose. Based on the analysis of thermally protected heat resistance of composite coating composed of two layers (first layer: underlayer ПН70Ю30 + basic protective coating ZrO2 + 10 % Ni and second layer: underlayer СоСrАlY + protectivecoating Аl2О3+Сr2О3 ) offer for better protection to the combustion chambers of gas turbine engines. Coating by gasthermal spraying.Method. Heat resistance of the coating was determined by conventional methods. Heat resistance was evaluated by weight increase per sample at his aging at 1000 °C for 5 hours. The cycle was repeated 3 times. Results. A comparative analysis of heat resistance alloys ЭП 648 and ЭИ 868, heat resistance and sublayers type ПН70Ю30 and СоСrАlY, and main type of protective coating was done ZrO2 + 10%Ni і Аl2О3+Сr2О3. It is shown that to protect the combustion chambers of gas turbine engines it is necessary to useplasma  composition  coating  sublayer  СоСrАlY  and  basic  coating  spinel  Аl2О3+Сr2О3.  Scientific  innovation.  Obtained  new scientific  data  on  the  use  of  composite  coatings  termal  protective combustion  chambers  and  turbine  engines  by  heat-shielding properties. The  practical  significance. Identified  and studied,  tested  a new  materials  for composite coatings for termal  protective combustion chambers of gas turbine engines and provided recomendations for propagation in the coating industry.

Author Biographies

F. F. Vashekevich, Department of Materials and Materials Processing, Pridniprovsk State Academy of Civil Engineering and Architecture, Chernyshevsky st., 24a, 49600, Dnipropetrovsk, Ukraine

Ph.D., Associate Professor

A. Y. Spilnik, Department of Materials and Materials Processing, Pridniprovsk State Academy of Civil Engineering and Architecture, Chernyshevsky st., 24a, 49600, Dnipropetrovsk, Ukraine

Associate Professor

O. B. Zagorodny, Department of Materials and Materials Processing, Pridniprovsk State Academy of Civil Engineering and Architecture, Chernyshevsky st., 24a, 49600, Dnipropetrovsk, Ukraine

Assistan

V. I. Zuravel, Department of Materials and Materials Processing, Pridniprovsk State Academy of Civil Engineering and Architecture, Chernyshevsky st., 24a, 49600, Dnipropetrovsk, Ukraine

Associate Professor.

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Published

2016-03-22

Issue

Section

Proceedings in memory of Starodubov