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    Abradable material
    31.
    发明授权
    Abradable material 有权

    公开(公告)号：US10697464B2

    公开(公告)日：2020-06-30

    申请号：US15223460

    申请日：2016-07-29

    Applicant: United Technologies Corporation

    Inventor： Christopher W. Strock

    IPC: F04D29/16 ,  C23C4/073 ,  C23C4/067 ,  B23P15/02 ,  F04D29/52

    Abstract: A blade outer airseal comprising a body having: an inner diameter (ID) surface; an outer diameter (OD) surface; a leading end; a trailing end; a metallic substrate; and a coating system atop the substrate along at least a portion of the inner diameter surface. At least over a first area of the inner diameter surface, the coating system comprises an abradable layer comprising a metallic matrix and a filler. The filler forms at least 20% by volume of the abradable layer with agglomerates or aggregates of oxide particles, the oxide particles having a D50 size ≤200 nm.

    Outer airseal abradable rub strip
    32.
    发明授权
    Outer airseal abradable rub strip 审中-公开

    公开(公告)号：US10669878B2

    公开(公告)日：2020-06-02

    申请号：US15465710

    申请日：2017-03-22

    Applicant: United Technologies Corporation

    Inventor： Xuan Liu ,  Christopher W. Strock

    IPC: F01D11/12 ,  C22C9/06 ,  B22F3/105 ,  F01D5/28 ,  B22F5/04

    Abstract: A blade outer airseal has a body comprising: an inner diameter (ID) surface; an outer diameter (OD) surface; a leading end; and a trailing end. The airseal body has a metallic substrate and a coating system atop the substrate along at least a portion of the inner diameter surface. At least over a first area of the inner diameter surface, the coating system comprises an abradable layer comprising a metallic matrix and a solid lubricant; and the metallic matrix comprises, by weight, 35% copper, 30.0-45.0% combined nickel, cobalt, and iron with combined iron and cobalt content at most one-third of the nickel content, 2.0-8.0% aluminum, and 5.0-15.0% chromium.

    Fan blades with abrasive tips
    37.
    发明授权
    Fan blades with abrasive tips 有权

    公开(公告)号：US10408224B2

    公开(公告)日：2019-09-10

    申请号：US14509780

    申请日：2014-10-08

    Applicant: UNITED TECHNOLOGIES CORPORATION

    Inventor： Christopher W. Strock ,  Changsheng Guo

    IPC: F01D5/28 ,  F04D29/38 ,  F04D19/00 ,  F01D11/12

    Abstract: A fan blade for a gas turbine engine is disclosed. The disclosed fan blade includes an airfoil having a leading edge, a trailing edge, a convex side, a concave side and a distal tip. The leading edge, trailing edge, convex side and concave side of the airfoil is at least partially coated with an erosion resistant coating. The distal tip of the airfoil is coated with a bonded abrasive coating. The bonded abrasive coating engages the abradable coating disposed on the fan liner and, because of its low thermal conductivity, reduces heat transfer to the distal tip of the fan blade. The reduction in heat transfer to the distal tip of the fan blade preserves the integrity of erosion resistant coatings that may be applied to the body or the airfoil of the fan blade.

    Blade rub material
    38.
    发明授权
    Blade rub material 有权

    公开(公告)号：US10408078B2

    公开(公告)日：2019-09-10

    申请号：US14761496

    申请日：2013-01-29

    Applicant: United Technologies Corporation

    Inventor： Christopher W. Strock ,  Changsheng Guo

    IPC: F01D11/12 ,  F01D5/02 ,  F01D25/24 ,  B82Y30/00 ,  F01D5/28

    Abstract: One aspect of the disclosure involves a nib material comprising a polymeric matrix and carbon nanotubes in the matrix. In one or more embodiments of any of the foregoing embodiments, the matrix comprises a silicone. In one or more embodiments of any of the foregoing embodiments, the rub material is at least 1.0 mm thick. In one or more embodiments of any of the foregoing embodiments, the silicone is selected from the group consisting of dimethyl- and fluoro-silicone rubbers and their copolymers. In one or more embodiments of any of the foregoing embodiments, the carbon nanotubes at least locally have a concentration of 1-20% by weight.

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