Investigation of the effect of NiCrAlY/Cr2O3/YSZ plasma coatings on erosion performance of MDN 420 steel at high temperature
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Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
Inderscience Publishers
Abstract
The purpose of the current study was to use an air jet erosion tester to examine the erosive behaviour of plasma sprayed coatings on MDN-420 that were composed of 70% NiCrAlY, 25% Cr2O3, and 5% YSZ. Microstructure and phase studies were performed. Measurements were made on the microhardness and adhesion strength. Al2O3 erodent was used in a solid particle erosion test with impact angles of 30° and 90° at 300°C, 500°C, and 700°C. The erosion volume loss was measured using an optical profilometer. For the test temperature used, it was found that the coating’s erosion resistance was greater than that of the substrate and that it was more pronounced at higher impact angles and higher temperatures. The shape of the degraded coating surface reflects the coating’s ductile nature. © © 2023 Inderscience Enterprises Ltd.
Description
Keywords
Alumina, Aluminum oxide, Chromium alloys, Plasma jets, Plasma spraying, Sprayed coatings, Yttria stabilized zirconia, 'current, Air jet, Coating(s), Highest temperature, MDN-420 alloy, NiCrAlY/cr2o3/YSZ, Performance, Plasma coating, Plasma spray, Plasma-sprayed coatings, Erosion
Citation
International Journal of Surface Science and Engineering, 2023, 17, 3, pp. 180-194