MATERIALS ENGINEERING FOR ANTI-COKING COATING STACKS

    公开(公告)号:US20240175119A1

    公开(公告)日:2024-05-30

    申请号:US18071391

    申请日:2022-11-29

    CPC classification number: C23C16/0272 C23C16/40 C23C16/405 C23C16/45527

    Abstract: Embodiments of the present disclosure relate generally to aerospace components containing protective coatings and methods for depositing the protective coatings. The protective coatings can be anti-coking coatings to reduce or suppress coke formation when the aerospace component is heated in the presence of a fuel in a reducing environment. In one or more embodiments, a method for depositing a protective coating on an aerospace component includes depositing a barrier layer on a surface of the aerospace component and depositing a carbon oxidation catalyst layer on the barrier layer. The barrier layer can be or include one or more metal oxides, such as chromium oxide, tungsten oxide, titanium oxide, vanadium oxide, alloys thereof, or any combination thereof. The carbon oxidation catalyst layer can be or include cerium oxide or doped cerium oxide or one or more oxygen storage materials.

    METHODS FOR DEPOSITING PROTECTIVE COATINGS ON TURBINE BLADES AND OTHER AEROSPACE COMPONENTS

    公开(公告)号:US20210156267A1

    公开(公告)日:2021-05-27

    申请号:US16821427

    申请日:2020-03-17

    Abstract: Embodiments of the present disclosure generally relate to protective coatings on turbine blades, turbine disks, and other aerospace components and methods for depositing the protective coatings. In one or more embodiments, a turbine blade includes a blade portion and a root coupled to the blade portion, where the root contains a protective coating disposed thereon. The protective coating is or contains one or more deposited crystalline film containing at least one of a metal oxide, a metal nitride, or a metal oxynitride and has a thickness of about 100 nm to about 10 μm. In some examples, a turbine blade assembly includes a disk and a plurality of the turbine blades coupled to the disk. The protective coating is disposed on the root on the turbine blade and/or a receiving surface on the turbine disk.

    METHODS OF PROTECTING AEROSPACE COMPONENTS AGAINST CORROSION AND OXIDATION

    公开(公告)号:US20200340107A1

    公开(公告)日:2020-10-29

    申请号:US16850856

    申请日:2020-04-16

    Abstract: Embodiments of the present disclosure generally relate to protective coatings on an aerospace component and methods for depositing the protective coatings. In one or more embodiments, a method for depositing a coating on an aerospace component includes depositing one or more layers on a surface of the aerospace component using an atomic layer deposition or chemical vapor deposition process, and performing a partial oxidation and annealing process to convert the one or more layers to a coalesced layer having a preferred phase crystalline assembly. During oxidation cycles, an aluminum depleted region is formed at the surface of the aerospace component, and an aluminum oxide region is formed between the aluminum depleted region and the coalesced layer. The coalesced layer forms a protective coating, which decreases the rate of aluminum depletion from the aerospace component and the rate of new aluminum oxide scale formation.

    AEROSPACE COMPONENTS HAVING PROTECTIVE COATINGS AND METHODS FOR PREPARING THE SAME

    公开(公告)号:US20220154335A1

    公开(公告)日:2022-05-19

    申请号:US16951837

    申请日:2020-11-18

    Abstract: Embodiments of the present disclosure generally relate to protective coatings on aerospace components and methods for depositing the protective coatings. In one or more embodiments, an aerospace component containing a protective coating is provided and contains a superalloy substrate and a bond coating disposed on the superalloy substrate. The protective coating also contains a thermal barrier coating containing yttria-stabilized zirconia disposed on the bond coating, an oxide coating disposed on the thermal barrier coating, and an optional capping layer disposed on the oxide coating. The oxide coating contains a film stack containing two or more pairs of a first film and a second film, where the first film contains a first metal oxide and the second film contains a second metal oxide, and the first metal oxide has a different composition than the second metal oxide. The capping layer contains aluminum oxide, calcium oxide, magnesium oxide, or any combination thereof.

    NITRIDE PROTECTIVE COATINGS ON AEROSPACE COMPONENTS AND METHODS FOR MAKING THE SAME

    公开(公告)号:US20230050169A1

    公开(公告)日:2023-02-16

    申请号:US17977651

    申请日:2022-10-31

    Abstract: Embodiments of the present disclosure generally relate to protective coatings on various substrates including aerospace components and methods for depositing the protective coatings. In one or more embodiments, an aerospace component has a protective coating containing an aluminum oxide layer disposed on a surface of the aerospace component, a metal-containing catalytic layer disposed on the aluminum oxide layer, and a boron nitride layer disposed on the metal-containing catalytic layer. The aerospace component contains a superalloy having at least nickel and aluminum. In some examples, the aerospace component is a turbine blade, a turbine vane, a support member, a frame, a rib, a fin, a pin fin, a fuel nozzle, a combustor liner, a combustor shield, a heat exchanger, a fuel line, a fuel valve, an internal cooling channel, or any combination thereof.

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