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    21.
    发明专利
    未知

    公开(公告)号：NO781787A

    公开(公告)日：1978-11-28

    申请号：NO781787

    申请日：1978-05-23

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DUHL DAVID NOEL ,  OLSON WALTER E

    IPC: C22C19/05 ,  C22F1/10 ,  C30B11/00 ,  C22C ,  C22F

    CPC classification number: C22C19/056 ,  C30B11/00 ,  C30B29/52

    Abstract: The invention relates to nickel-based superalloy single-crystal objects which are produced from a special alloy and heat-treated. The resulting objects are substantially free of grain boundary hardeners such as carbon, boron and zirconium, and contain only a limited amount of cobalt. Owing to the alloy composition, the alloys have a high initial melting point. The heat treatment process homogenises the microstructure and refines the gamma '-morphology. The invention is particularly useful, for example, in the production of rotor blades and guide vanes for gas turbine engines.

    23.
    发明专利
    未知

    公开(公告)号：DE60032870T2

    公开(公告)日：2007-10-25

    申请号：DE60032870

    申请日：2000-11-09

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： IRELAND DENNIS M ,  SLEIGHT RYAN H ,  OLSON WALTER E ,  BARILOVICH PETER L

    IPC: B05B15/04 ,  F01D5/28 ,  B05D1/32 ,  C23C10/04 ,  C23C14/24 ,  F02C7/00

    Abstract: A fixture for selectively masking a turbine blade 60 includes a locator 10 with a separable receptacle 40 having portals 50. Guide bars 18 extend from the locator for guiding a pair of shield carriers 20 between deployed and retracted positions. Each shield carrier has a shield 26 projecting therefrom. In use, a turbine blade 60, whose root 70 includes a fir tree attachment 72 and a damper pocket 74, is mounted on the fixture so that the receptacle embraces the blade root. The shield carriers are translated along the guide bars until the shields penetrate through the portals and into the receptacle thus segregating the attachment 72 from the damper pocket 74. Masking powder 84 is then compressed into the receptacle to envelop the attachment while leaving the damper pocket unmasked. In one variant of the invention, the shields are independent, consumable shields 26a dimensioned and shaped to substantially conform to the size and shape of the damper pocket 74. The shields 26a are made of a thermally decomposable material and are wedged into the damper pockets 74 prior to blade masking. During the coating cycle, the shields 26a decompose at a temperature lower than the temperature at which coating vapors are produced to expose the damper pocket to the vapors.

    24.
    发明专利
    未知

    公开(公告)号：DE60032870D1

    公开(公告)日：2007-02-22

    申请号：DE60032870

    申请日：2000-11-09

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： IRELAND DENNIS M ,  SLEIGHT RYAN H ,  OLSON WALTER E ,  BARILOVICH PETER L

    IPC: B05B15/04 ,  F01D5/28 ,  B05D1/32 ,  C23C10/04 ,  C23C14/24 ,  F02C7/00

    Abstract: A fixture for selectively masking a turbine blade 60 includes a locator 10 with a separable receptacle 40 having portals 50. Guide bars 18 extend from the locator for guiding a pair of shield carriers 20 between deployed and retracted positions. Each shield carrier has a shield 26 projecting therefrom. In use, a turbine blade 60, whose root 70 includes a fir tree attachment 72 and a damper pocket 74, is mounted on the fixture so that the receptacle embraces the blade root. The shield carriers are translated along the guide bars until the shields penetrate through the portals and into the receptacle thus segregating the attachment 72 from the damper pocket 74. Masking powder 84 is then compressed into the receptacle to envelop the attachment while leaving the damper pocket unmasked. In one variant of the invention, the shields are independent, consumable shields 26a dimensioned and shaped to substantially conform to the size and shape of the damper pocket 74. The shields 26a are made of a thermally decomposable material and are wedged into the damper pockets 74 prior to blade masking. During the coating cycle, the shields 26a decompose at a temperature lower than the temperature at which coating vapors are produced to expose the damper pocket to the vapors.

    25.
    发明专利
    未知

    公开(公告)号：DE69732466T2

    公开(公告)日：2005-06-30

    申请号：DE69732466

    申请日：1997-10-09

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： OLSON WALTER E ,  PIETRUSKA NORMAN ,  DRAGHI PETER JON

    IPC: C23C24/08 ,  C23C10/04 ,  C23C10/48 ,  C23C26/00

    Abstract: The invention relates to a low activity localised aluminide coating for a metallic article made by positioning a coating material, preferably in the form of a tape, on a portion of the article. The coating material comprises a binder, a halide activator, an aluminum source, and an inert ceramic material. The coating material and the article are heated in an inert atmosphere between about 1800 DEG F (982 DEG C) and about 2050 DEG F (1121 DEG C) for between about four and about seven hours thereby producing a low activity localized aluminide coating having an outward diffusion aluminide coating microstructure characterized by two distinct zones, an inner diffusion zone and an outer zone including between about 20-28 percent, by weight, aluminum.

    26.
    发明专利
    未知

    公开(公告)号：DE69117129D1

    公开(公告)日：1996-03-28

    申请号：DE69117129

    申请日：1991-10-03

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： GRYBOWSKI EDWARD JAMES ,  OLSON WALTER E

    IPC: C23C10/28 ,  C23C10/08 ,  C23C16/20

    Abstract: A process for forming a diffusion coating to the surface of a metal article. The process is particularly adapted for forming diffusion aluminide coatings on metal blades and vanes used in gas turbine engines. According to the invention, halide vapor is caused to react with a source of aluminum to form an aluminum rich halide gas. This gas then reacts with the part surface to form the aluminide coating. A key aspect of the invention relates to the timing of the reaction between the halide vapor and the source of aluminum.

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