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    Abradable seal
    1.
    发明授权
    Abradable seal 失效
    耐磨密封

    公开(公告)号：US3918925A

    公开(公告)日：1975-11-11

    申请号：US46927074

    申请日：1974-05-13

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： MCCOMAS CHARLES C

    IPC: B22F7/02 ,  C09K3/10 ,  C23C28/00 ,  F01D11/12 ,  B22F3/00

    CPC classification number: F01D11/122 ,  B22F7/02 ,  C09K3/1028 ,  C09K2200/0213 ,  C09K2200/0239 ,  C09K2200/0243 ,  C09K2200/0278 ,  C23C28/321 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/347 ,  Y10S277/94 ,  Y10S277/941 ,  Y10S428/926 ,  Y10T428/12042 ,  Y10T428/12049 ,  Y10T428/1234 ,  Y10T428/12472 ,  Y10T428/12764

    Abstract: An abradable seal for use between relatively rotatable members in elevated temperature operating apparatus comprising a nickel aluminide coating approximately 0.005-0.010 inch thick bonded to one of said members, a voidless, inorganic water insoluble spinel compound layer approximately 0.005-0.05 inch thick bonded to the nickel aluminide coating consisting essentially of the air cured reaction product of, by weight, 20-40% sodium silicate, 55-75% aluminum and 2-8% zinc oxide, and an abradable material bonded to the inorganic coating selected from the group consisting of sintered metallic fiber, sintered metallic powder and metallic honeycomb.

    Abstract translation: 一种用于在高温操作装置中的可相对旋转的构件之间使用的耐磨密封件，其包括约0.005-0.010英寸厚的镍铝化物涂层，其结合到所述构件中的一个构件上，大约0.005-0.05英寸厚的无孔水无定形尖晶石化合物层， 主要由空气固化的反应产物，重量比为20-40％的硅酸钠，55-75％的铝和2-8％的氧化锌组成的镍铝化物涂层，以及与无机涂层结合的可磨损材料，所述无机涂层选自 烧结金属纤维，烧结金属粉末和金属蜂窝。

    PLASMA SPRAY METHOD AND APPARATUS
    5.
    发明专利
    PLASMA SPRAY METHOD AND APPARATUS 未知

    公开(公告)号：CA1161314A

    公开(公告)日：1984-01-31

    申请号：CA348289

    申请日：1980-03-24

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SOKOL LARRY S ,  MCCOMAS CHARLES C ,  HANNA EARL M

    IPC: B05B7/22 ,  B05C5/04 ,  C23C4/00 ,  C23C4/12 ,  B05D1/10

    Abstract: PLASMA SPRAY METHOD AND APPARATUS 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 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. F-4451

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