High-temperature oxidation behavior of plasma-sprayed NiCrAlY/TiO2 and NiCrAlY/Cr2O3/YSZ coatings on titanium alloy

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dc.contributor.authorReddy, G.M.S.
dc.contributor.authorPrasad, C.D.
dc.contributor.authorShetty, G.
dc.contributor.authorRamesh, M.R.
dc.contributor.authorRao, T.N.
dc.contributor.authorPatil, P.
dc.date.accessioned2026-02-04T12:28:01Z
dc.date.issued2022
dc.description.abstractThe 70% NiCrAlY + 30% TiO<inf>2</inf> and 70% NiCrAlY + 25% Cr<inf>2</inf>O<inf>3</inf> + 5% YSZ metallic coatings are sprayed on titanium-15 alloy of ASTM B338, Grade 2, by using the plasma spray coating technology. Cyclic oxidation studies are conducted on the uncoated and coated alloys at 700 °C under static air environment. The kinetics of oxidation is studied by using the thermo-gravimetric method. Phase, microstructural, and chemical analysis tests are performed on as-sprayed and oxidized coatings. The coated alloys are found to be more resistant when compared to the uncoated alloys. The NiCrAlY + Cr<inf>2</inf>O<inf>3</inf> + YSZ coating is found to be more protective when compared to NiCrAlY + TiO<inf>2</inf> coating. It is concluded that the formation of Cr<inf>2</inf>O<inf>3</inf>, NiCr<inf>2</inf>O<inf>4</inf>, and Al<inf>2</inf>O<inf>3</inf> is attributed to the development of oxidation resistance in the coatings. © 2022, International Institute of Welding.
dc.identifier.citationWelding in the World, 2022, 66, 6, pp. 1069-1079
dc.identifier.issn432288
dc.identifier.urihttps://doi.org/10.1007/s40194-022-01268-7
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/22562
dc.publisherSpringer Science and Business Media Deutschland GmbH
dc.subjectAlumina
dc.subjectAluminum oxide
dc.subjectChemical analysis
dc.subjectOxidation resistance
dc.subjectPlasma jets
dc.subjectPlasma spraying
dc.subjectSprayed coatings
dc.subjectThermooxidation
dc.subjectTitanium alloys
dc.subjectYttria stabilized zirconia
dc.subjectCoating technologies
dc.subjectCyclic oxidation
dc.subjectHigh temperature oxidation Behavior
dc.subjectMetallic coating
dc.subjectNiCrAlY/cr2O3/YSZ
dc.subjectNiCrAlY/TiO2
dc.subjectPlasma spray coating
dc.subjectTitania
dc.subjectTitanium (alloys)
dc.subjectYSZ coatings
dc.subjectTitanium dioxide
dc.titleHigh-temperature oxidation behavior of plasma-sprayed NiCrAlY/TiO2 and NiCrAlY/Cr2O3/YSZ coatings on titanium alloy

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