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    PLASMA SPRAY
    11.
    发明专利
    PLASMA SPRAY 未知

    公开(公告)号：AU530584B2

    公开(公告)日：1983-07-21

    申请号：AU5899680

    申请日：1980-06-03

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: B05B7/22 ,  B05C5/04 ,  C23C4/00 ,  C23C4/12 ,  B05B5/00 ,  H05H1/34 ,  H05H1/42

    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.

    12.
    发明专利
    未知

    公开(公告)号：MX147954A

    公开(公告)日：1983-02-10

    申请号：MX18272780

    申请日：1980-06-11

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: B05B7/22 ,  B05C5/04 ,  C23C4/00 ,  C23C4/12 ,  H05H5/02

    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.

    13.
    发明专利
    未知

    公开(公告)号：FR2467243A1

    公开(公告)日：1981-04-17

    申请号：FR8020950

    申请日：1980-09-30

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: C23C4/08 ,  C22C32/00 ,  C22C19/05 ,  C23C7/00

    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.

    14.
    发明专利
    未知

    公开(公告)号：DE3021210A1

    公开(公告)日：1980-12-18

    申请号：DE3021210

    申请日：1980-06-04

    Applicant: UNITED TECHNOLOGIES CORP

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

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

    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.

    15.
    发明专利
    未知

    公开(公告)号：NO801706L

    公开(公告)日：1980-12-12

    申请号：NO801706

    申请日：1980-06-09

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: B05B7/22 ,  B05C5/04 ,  C23C4/00 ,  C23C4/12 ,  B05B ,  B05D

    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.

    19.
    发明专利
    未知

    公开(公告)号：NO156328B

    公开(公告)日：1987-05-25

    申请号：NO801084

    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 ,  C23C28/00

    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.

    CARBON BEARING MCRAIY COATING
    20.
    发明专利
    CARBON BEARING MCRAIY COATING 未知

    公开(公告)号：AU535069B2

    公开(公告)日：1984-03-01

    申请号：AU6264580

    申请日：1980-09-23

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: C23C4/08 ,  C22C19/07 ,  C22C28/00 ,  C23C7/00 ,  C23C13/02

    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.

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