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    METHOD OF FORMING ALUMINIDE CONTAINING ACTIVE ELEMENT AS NON-BONDED AND BONDED COATING AND COATED MEMBER
    2.
    发明专利
    METHOD OF FORMING ALUMINIDE CONTAINING ACTIVE ELEMENT AS NON-BONDED AND BONDED COATING AND COATED MEMBER 失效

    公开(公告)号：JP2002115081A

    公开(公告)日：2002-04-19

    申请号：JP2000388097

    申请日：2000-12-21

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BOSE SUDHANGSU ,  OLSON WALTER E ,  DUHL DAVID N

    IPC: F01D5/28 ,  C23C4/08 ,  C23C4/18 ,  C23C10/02 ,  C23C28/00 ,  C23C28/02 ,  C25D5/12 ,  C25D5/50 ,  F02C7/00

    Abstract: PROBLEM TO BE SOLVED: To provide a process of forming improved aluminum containing one or more kinds of oxygen activating elements. SOLUTION: A metallic base material is subjected to overlay coating (for example, MCrAL coating) containing >=1 kinds of the oxygen active elements (for example, yttrium, hafnium and silicon) by a general overlay process like low-pressure plasma thermal spraying. Metal (more preferably the transition metal of group VIII, as platinum) is applied by, for example, electroplating onto the base material. The base material is subjected to aluminization by, for example, chemical vapor deposition and is more preferably subjected to heat treatment in succession thereto. Further, thermally insulating ceramics is applied thereto. The aluminide coating containing the active elements having the stable composition and improved durability may be thereby obtained. Such coating may be utilized as the independent type coating and as the bonded coating for the thermally insulation coating to be applied in succession.

    SUPERALLOY SINGLE CRYSTAL ARTICLES
    5.
    发明专利
    SUPERALLOY SINGLE CRYSTAL ARTICLES 未知

    公开(公告)号：CA1206398A

    公开(公告)日：1986-06-24

    申请号：CA409076

    申请日：1982-08-10

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DUHL DAVID N ,  CETEL ALAN D

    IPC: C22C19/05 ,  C30B11/00 ,  C30B29/52

    Abstract: Superalloy Single Crystal Articles A specific composition range and process sequence are described for the production of single crystal superalloy articles which have an exceptional combination of high temperature mechanical properties and resistance to oxidation and hot corrosion. The nominal composition is 6% Ta, 9% Cr, 5% Co, 1% Ti, 1% Mo, 7% W, 5.5% Al, .15% Hf balance essentially nickel. Material of this composition is cast and solidified in single crystal form and heat treated to produce an optimum microstructure.

    6.
    发明专利
    未知

    公开(公告)号：DE69711724T2

    公开(公告)日：2002-08-08

    申请号：DE69711724

    申请日：1997-12-11

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： CETEL ALAN D ,  DUHL DAVID N

    IPC: F01D5/28 ,  C22C19/05 ,  C30B11/00 ,  C30B29/52

    Abstract: A superalloy composition and single crystal articles of the composition are disclosed. The broad range, in weight percent, is 3.0-20.0% Co, 5.0-10.0% W, 5.0-7.0% Al, 0.4-2.9% Cr, 4.0-8.0% Ta, 0-1.0% V, 0-8.5% Re, 0-1.5% Ti, 0-3.0% Hf, 0-4.0% Mo, 0-2.0% Nb, 0-10.0% of one or more elements selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt, 0-1.0 of one or more elements selected from the group consisting of Y, La, Sc, Ac, lanthanides or actinides series of elements, balance essentially Ni. An equation is presented to select the most useful specific compositions from within this range.

    7.
    发明专利
    未知

    公开(公告)号：DE3503110A1

    公开(公告)日：1985-08-22

    申请号：DE3503110

    申请日：1985-01-30

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DUHL DAVID N ,  CHEN OTIS Y

    IPC: C22C1/02 ,  C22C19/05 ,  C30B11/00 ,  C30B29/52

    Abstract: Corrosion resistant, high strength, superalloy single crystal articles are described. Starting with a nominal composition of 11.75% Cr, 9% Co, 1.75% Mo, 4.5% W, 2.5% Ta, 2.5% Al, 4% Ti, balance essentially nickel, intentional additions are made of carbon and extra tantalum. From 0.05-0.15% carbon is added along with sufficient tantalum to combine with the carbon to form tantalum carbon. The resultant articles have substantially improved hot corrosion resistance and creep properties.

    HEAT TREATED SUPERALLOY SINGLE CRYSTAL ARTICLE AND PROCESS
    8.
    发明专利
    HEAT TREATED SUPERALLOY SINGLE CRYSTAL ARTICLE AND PROCESS 未知

    公开(公告)号：CA1117320A

    公开(公告)日：1982-02-02

    申请号：CA301018

    申请日：1978-04-12

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DUHL DAVID N ,  OLSON WALTER E

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

    Abstract: Nickel base superalloy single crystal articles formed from a particular alloy and heat treated are described as is the process employed. The resultant articles are substantially free from the grain boundary strengtheners such as carbon, boron, and zirconium and contain only a limited amount of cobalt. As a result of the alloy composition, the alloys have a high incipient melting temperature. The heat treatment process homogenizes the microstructure, and refines the gamma prime morphology. The alloy has particular utility in the fabrication of airfoils (blades and vanes) for use in gas turbine engines. In particular, the strength of articles made according to this invention makes them especially suited for use as blades in gas turbine engines.

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