High temperature erosion behavior of plasma sprayed NiCrAlY/WC-Co/cenosphere coating

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dc.contributor.authorMathapati, M.
dc.contributor.authorRamesh, M.R.
dc.contributor.authorDoddamani, M.
dc.date.accessioned2026-02-05T09:32:07Z
dc.date.issued2017
dc.description.abstractHigh temperature erosive behavior of plasma sprayed NiCrAlY-25WC-Co/cenosphere coating deposited on MDN 321 steel is investigated in the present work. Coating is characterized using Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD). Microhardness, porosity, adhesion strength, fracture toughness and ductility of the coating are quantified. Solid particle erosion test is conducted at 200, 400 and 600 °C with 30 and 90° impact angles using alumina erodent. Optical profilometer is used to evaluate erosion volume loss. Erosion resistance of the coating is observed to be higher than the substrate for the test temperatures chosen and noted to be more prominent at lower impact angle and higher temperature. High temperature stability of mullite, alumina and oxide layer assists in increasing erosion resistance of coating. The eroded coating surface morphology reveals the brittle mode of material removal. © 2017 Elsevier B.V.
dc.identifier.citationSurface and Coatings Technology, 2017, 325, , pp. 98-106
dc.identifier.issn2578972
dc.identifier.urihttps://doi.org/10.1016/j.surfcoat.2017.06.033
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/25504
dc.publisherElsevier B.V.
dc.subjectAlumina
dc.subjectCoatings
dc.subjectErosion
dc.subjectFracture toughness
dc.subjectPlasma jets
dc.subjectScanning electron microscopy
dc.subjectSilicate minerals
dc.subjectTungsten carbide
dc.subjectX ray diffraction
dc.subjectBrittle failures
dc.subjectCenospheres
dc.subjectCoating surface morphologies
dc.subjectErosion resistance
dc.subjectHigh temperature erosion
dc.subjectHigh temperature stability
dc.subjectOptical profilometer
dc.subjectSolid particle erosion
dc.subjectPlasma spraying
dc.titleHigh temperature erosion behavior of plasma sprayed NiCrAlY/WC-Co/cenosphere coating

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