High velocity oxy-fuel (HVOF) thermal spray has been successfully used to deposit yttria-stabilized zirconia (YSZ) for thermal barrier coating (TBC) applications. Adherent coatings were obtained within a limited range of spray conditions using hydrogen as fuel gas.

Dec 15, 2024 · The successful development of composite coatings comprising Yttria-Stabilized Zirconia (YSZ) and Chromium Oxide (Cr2O3) on Al-6061 substrates using the High-Velocity Oxy Fuel (HVOF) technique demonstrates the viability of this method for creating effective Thermal Barrier Coatings (TBCs).

Oct 1, 2020 · In this paper, two coating techniques, the high velocity oxy-fuel (HVOF) and air plasma spray (APS) techniques, were used to deposit a bond coat of NiCoCrAlYTa on the Inconel 625 substrate, followed by applying a topcoat of yttria-stabilized zirconia (YSZ).

Dec 10, 2018 · In this study, the feasibility of a hybrid HVOF process utilizing a powder with a second feedstock, in this case solution-precursor, is examined for Al 2 O 3 -YSZ/ZrO 2 composite coatings.

Mar 1, 2025 · In this study, 40Al-35Al 2 O 3-25ZrO 2 coating was produced by HVOF method on SS 316L at 5 and 10 LPM oxygen flow rates, and 15 and 20 cm spray distances. During the cyclic oxidation test, S4 exhibited α-Al 2 O 3 and t-ZrO 2 phase which are highly stable at …

experiments examined high velocity oxygen fuel (HVOF) MCrAlY and MCrAlYHfSi bond coatings and air-plasma sprayed YSZ top coatings on X4 superalloy substrates with and without Y and La additions. Compared to a dry O 2 baseline, the addition of 10% water vapor decreased the YSZ coating lifetime for either bond coating by ~30% at 1100°C.

High velocity oxy-fuel (HVOF) thermal spray has been successfully used to deposit yttria-stabilized zirconia (YSZ) for thermal barrier coating (TBC) applications. Adherent coatings were obtained within a limited range of spray conditions using hydrogen as fuel gas.

High velocity oxy-fuel (HVOF) thermal spray has been successfully used to deposit yttria-stabilized zirconia (YSZ) for thermal barrier coating (TBC) applications. Adherent coatings were...

Jul 19, 2017 · Ni-YSZ coatings with YSZ contents of 30 and 50 wt. % have been developed on SS substrate by HVOF process. Commercially available nickel and YSZ powders were used as the starting material for depositing these coatings.

Sep 1, 2023 · Rare-earth (RE) zirconates, such as gadolinium zirconate (GZ), gained much attraction to be used for the next generation TBC. A double-layer and triple-layer TBC were deposited using the suspension and solution precursor high velocity oxy …