Abstract
The current study examines the erosive behaviour of a 65% NiCrAlY + 35% TiO2 plasma-sprayed coating on titanium-15 substrate at various temperatures. X-ray diffraction and scanning electron microscopy were used to characterize the coating. We assessed the coating's porosity, microhardness, surface abrasiveness, and adhesive power. At impact angles of 30° and 90°, solid particle erosion studies were conducted at various temperatures of 300°C, 500°C, and 700°C. The Al2O3 erodent was used in the hot air jet erosion tester to conduct the testing. Using an optical profilometer, the erosion volume loss of substrates with and without coatings was measured. At the various test temperatures used, it was noted that the coating's erosion resistance was found to be higher than the substrate's. For both impact angles, of 30° and 90°, it was discovered that the coating's erosion resistance improved with temperature, going from 300°C to 700°C. It can be seen from the shape of the degraded coating surface that the coating exhibits ductile behavior as a whole.
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Madhu Sudana Reddy, G., Durga Prasad, C., Kollur, S. et al. Investigation of High-Temperature Erosion Behavior of NiCrAlY/TiO2 Plasma Coatings on Titanium Substrate. JOM 75, 3317–3323 (2023). https://doi.org/10.1007/s11837-023-05894-4
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DOI: https://doi.org/10.1007/s11837-023-05894-4