OBRABOTKAMETALLOV Vol. 26 No. 2 2024 technology W(m2‧nm) nm ABB for λ=3-7 µm R=8.5 kW/m2, ɛ = 1 Fe2O3 for λ=3-7 µm R=5.9 kW/m2, ɛ = 0,7 Al2O3+10%Fe2O3 for λ=3-7 µm R=5.0 kW/m2, ɛ = 0,59 Ti+10%Fe2O3 for λ=3-7 µm R=4.8 kW/m2, ɛ = 0,57 Steel for λ=3-7 µm R=4.8 kW/m2, ɛ = 0,57 Fig. 5. Spectral emissivity of experimental coating samples at 450°С a b c Fig. 6. Appearance of coating samples after thermal cycling: Fe2O3 (a); Al2O3 + 10 % Fe2O3 (b); Ti + 10 % Fe2O3 (c) Conclusions Coatings Fe2O3; Al2O3 + 10 % Fe2O3, Ti + 10 % Fe2O3, obtained by detonation gas dynamic powder spraying were studied for JSC Shebekino Machine Building Plant, Shebekino. Analysis of the microstructure of the obtained coatings showed that it has a dense lamellar structure with the absence of cracks. The results of high-temperature cyclic heat treatment showed that the obtained coatings are resistant to operating temperatures. X-ray diffraction analysis showed that no changes in the crystal lattice of the coatings occurred under the influence of cyclic heat treatment. The results of infrared spectrometry of the obtained coatings show that at T = 450 °C about 5 kW of power can be obtained per square meter of a coating with a high emission coefficient. According to the
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