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    23.
    发明专利
    未知

    公开(公告)号：DE3036206A1

    公开(公告)日：1981-04-23

    申请号：DE3036206

    申请日：1980-09-25

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： MCCOMAS CHARLES CARTER ,  MORRIS JAMES WILLIAM ,  SOKOL LARRY STEVEN

    IPC: C23C4/08 ,  C23C5/00 ,  C23C7/00 ,  F01D5/28 ,  C22C19/00

    Abstract: A protectively coated superalloy has improved oxidation, corrosion, and wear resistance at elevated temperatures. The protective coating is a MCrAlY type alloy having a carbon content of 0.6 to 11 percent and is characterized in a preferred embodiment by having a carbon bearing matrix containing metal carbides of 1-2 microns mean size and chromium carbides of less than 12 microns. The coating is produced in plasma spraying a mixture of MCrAlY and CR3C2 powders to form a coating having both fine carbides and coarser Cr3C2 carbides in an MCrAlY matrix. Heat treatment at 1080 DEG C after coating bonds the substrate and coating and forms further fine carbides.

    24.
    发明专利
    未知

    公开(公告)号：FR2458973A1

    公开(公告)日：1981-01-02

    申请号：FR8012490

    申请日：1980-06-05

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SOKOL LARRY STEVEN ,  MCCOMAS CHARLES CARTER ,  HANNA EARL MUNN

    IPC: B05B7/22 ,  B05C5/04 ,  C23C4/00 ,  C23C4/12 ,  H05H1/42 ,  C23C7/00

    Abstract: A plasma spray method capable of directing plasticized powders against a substrate for deposition of a protective coating thereon is disclosed. Various structural details of the apparatus described enable the attainment of high particle velocities without melting the particles. The technical concepts employed are directed to normalizing the temperature of the plasma stream at a reduced value prior to the injection of coating particles. A general reduction in temperature and substantial elimination of a thermal spike at the core of the stream are achieved. Coating particles are injected into the plasma stream only after the plasma is first cooled and then preferably accelerated. In detailed embodiments, a nozzle extension assembly having a plasma cooling zone, a plasma acceleration zone, a powder injection zone and a plasma/powder discharge zone is affixed to the downstream end of a conventional plasma generator.

    26.
    发明专利
    未知

    公开(公告)号：FR2456079A1

    公开(公告)日：1980-12-05

    申请号：FR8008365

    申请日：1980-04-15

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： MCCOMAS CHARLES CARTER ,  SOKOL LARRY STEVEN

    IPC: B32B15/04 ,  B23K35/24 ,  B32B9/00 ,  B32B18/00 ,  C04B35/76 ,  C04B37/02 ,  C04B41/70 ,  C23C4/00 ,  C23C4/02 ,  C23C4/04 ,  C23C4/10 ,  E04B1/94 ,  F01D5/28 ,  F01D11/12 ,  F01D25/08 ,  F02C7/00 ,  F02C7/24 ,  F02C7/28 ,  F23R3/42

    Abstract: A method of adhering a ceramic facing material to an underlying substrate is disclosed. Substrates to which the concepts apply include unsupported low modulus, porous wire pads as well as low modulus, porous wire pads backed by a solid metallic form. The ceramic application techniques employed are centered around the impregnation of the regions of the pad to be ceramic coated with an underlayment coating, such as MCrAlY material, wherein the designation "M" stands for at least one of the elements from the iron cobalt and nickel group. Deep penetration of the underlayment material into the pad is achieved with a high velocity, spraying process. Ceramic material is applied over the underlayment material by conventional spraying techniques. Articles of manufacture which are suited to fabrication in accordance with the concepts disclosed herein include, but are not limited to, outer air seals, combustion chambers, and airfoils of gas turbine engines.

    27.
    发明专利
    未知

    公开(公告)号：DE3015867A1

    公开(公告)日：1980-11-20

    申请号：DE3015867

    申请日：1980-04-24

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： MCCOMAS CHARLES CARTER ,  SOKOL LARRY STEVEN

    IPC: B32B15/04 ,  B23K35/24 ,  B32B9/00 ,  B32B18/00 ,  C04B35/76 ,  C04B37/02 ,  C04B41/70 ,  C23C4/00 ,  C23C4/02 ,  C23C4/04 ,  C23C4/10 ,  E04B1/94 ,  F01D5/28 ,  F01D11/12 ,  F01D25/08 ,  F02C7/00 ,  F02C7/24 ,  F02C7/28 ,  F23R3/42 ,  C04B39/00

    Abstract: A method of adhering a ceramic facing material to an underlying substrate is disclosed. Substrates to which the concepts apply include unsupported low modulus, porous wire pads as well as low modulus, porous wire pads backed by a solid metallic form. The ceramic application techniques employed are centered around the impregnation of the regions of the pad to be ceramic coated with an underlayment coating, such as MCrAlY material, wherein the designation "M" stands for at least one of the elements from the iron cobalt and nickel group. Deep penetration of the underlayment material into the pad is achieved with a high velocity, spraying process. Ceramic material is applied over the underlayment material by conventional spraying techniques. Articles of manufacture which are suited to fabrication in accordance with the concepts disclosed herein include, but are not limited to, outer air seals, combustion chambers, and airfoils of gas turbine engines.

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