• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to special nickel-based alloys that can be used as coatings for parts, exposed to high temperatures, such as gas turbine engines. The purpose of the invention is to provide oxidation resistance while reducing the interaction zone between the coating and the substrate. The alloy contains, wt%: cobalt 4; chrome 8.5 aluminum 6; tantalum 5; tungsten 4.5; rhenium 1.5; molybdenum i, 5; hafnium 0.9, boron 0, pl; carbon 0.09; nickel else. The alloy provides reliable protection of the substrate against oxidation; there is virtually no interaction zone between the coating and the substrate. The alloy has high strength at elevated temperatures (at 982.2 ° C, the tensile strength is 30 kg / square inch). 2 tab. § W
    公开号:SU1450751A3
    申请号:SU843783002
    申请日:1984-08-24
    公开日:1989-01-07
    发明作者:Роберт Джексон Мелвин；Луис Пругар Марк；Яанг Све-Ванг；Руель Раирден Джон；Френсис Ксаваер Гиглиотти Майкл (Младший)
    申请人:Дженерал Электрик Компани (Фирма)；
    IPC主号:
    专利说明:

    four
    about ate

    The invention relates to special alloys based on nickel, which can be used as coatings for parts subjected to high temperatures, for example 5 gas turbine engines.
    The purpose of the invention is to provide durability of oxidation while reducing the interaction zone between the coating and the substrate.
    The goal is achieved by the fact that the coating alloy has the following composition, wt.%:
    Cobalt
    Chromium
    Aluminum
    Titan; Tungsten
    Rhenium
    Molybdenum
    Hafnium
    Boron
    Carbon
    Nickel
    four
    8.5
    6
    five
    4.5
    1.5
    1.5
    0.9
    0.01
    0.09
    The rest of the alloy of the indicated composition is coated (6M) by the method of plasma spraying,
    An alloy containing%: boron 0.02 is used as a B-type substrate; rhenium to 9; titanium to 0.8, chromium to 20, aluminum to 10, tantalum 3-15; 0.1-1 carbon; cobalt to 20 tungsten to 20; vanadium to 7J molybdenum to 10; Colombia to 3, hafnium to Z; zirconium to 1.5, nickel else.
    In addition, the coating is applied to an N-type substrate, the composition of which,%: chromium 9.3; cobalt 7.5, aluminum 3.7 tantalum 4; titanium 4.2; molybdenum 1.5, tungsten 6, niobium 0.5, nickel else. The alloy has the ability to crystallize directionally in the form of a single crystal.
    For comparison, NiCoCrAlY alloy coatings are applied to the same substrates. Figure 1 shows the results of cyclic oxidation of samples with substrates of B and N type. All coated substrates are heat-treated by double aging, at 1085 ° C for 2-8 f, then at 900 ° C for 4-16 h.
    From tab. .1 it can be seen that the proposed alloy provides reliable protection for both substrates.




    with
    five
    0
    five
    .
    0 5
    0 5
    0
    The evaluation of the properties of samples with coatings is carried out by metallographic methods in order to determine the degree of interaction between the coatings and the substrate. The evaluation results are shown in Table. 2, where: the degree of denudization and the formation of lamellar zones is indicated, the sum of which gives the value of the interaction zone created after oxidation in the indicated modes.
    The data show that when using the proposed alloy as a coating, there is virtually no interaction zone between the coating and the substrate. In addition, the proposed alloy also has high strength at elevated temperatures. At 982, the tensile strength is 30 kg / sq. inch, at 1095 ° С - 7 kg / sq. inch.
    Thus, the lesser tendency of the alloy to form interaction zones, in addition to high strength and compatibility with respect to thermal expansion with substrates made of special alloys, makes it possible to create, on the basis of the proposed alloy, a coating that is resistant to the environment under intense working conditions, for example under the conditions of operation of the turbine engine.
    Formula of invention
    one .
    A nickel-based alloy, predominantly for coating, containing cobalt, chromium, aluminum, tantalum, tungsten, rhenium, boron, carbon, characterized in that in order to provide oxidation resistance while reducing the interaction zone between the coating and the substrate; it additionally contains molybdenum and hafnium in the following ratio. wt.%:
    four
    8.5
    6
    five
    4.5
    1.5
    1.5
    0.9
    0.01
    0.09
    Rest
    Table 1
    cycling to 426 ,, once an hour
    1148 ° С Cycling
    Compiled by S. Nikolaev
    Editor N. Bobkova
    Tehred M. Khodanych
    Order 6984/59 Circulation 595 Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    The experience ceased after 300 hours, there is no failure
    500
    Table 2
    Proofreader G. Reshetnik
    权利要求:
    Claims (1)
    [1]
    Claim
    1 * ·
    Nickel-based alloy, mainly: for coating, containing cobalt, chromium, aluminum, tantalum, tungsten, rhenium, boron, carbon, characterized in that, in order to ensure oxidation resistance while reducing the interaction zone between the coating and the base; it additionally contains molybdenum and hafnium in the following ratio of the component, wt.%:
    Kbalt 4 Chrome ' 8.5 Aluminum 6 Tantalum 5 Tungsten 4,5 Rhenium 1,5 Molybdenum • 1.5 Hafnium 0.9 Boron 0.01 Carbon 0.09 Nickel Rest
    .1450751T a b 4faces 1 Test conditions Substrate Type Coating Time to failure, h
    1205 ° C, cycling up to 426.6 ° C, once per hour IN 6M The experiment ceased after 300 hours, no failure 1148 ° C IN NiCoCrAlY 500 Cycling up to 426.6 ° C IN 6M 500 11 35 ° C N NiCoCrAlY 500 Cycling up to 426.6 ° C, once per hour N GM 325
    1T a b l and a 2 Coatings (substrate) Holding time (temperature), h (° F) Denudation Depth (μl) The depth of the plate structure, (μl) NiCoCrAlY (B) 500 (2,100) 6.0 5,0 6M (B). 500 (2,100) 2,4 1.4 6M (N) 550 (2075) 0.9 0
    类似技术:
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    同族专利:
    公开号 | 公开日
    AU3240384A|1985-07-04|
    IL72850A|1988-06-30|
    AU573249B2|1988-06-02|
    GR80049B|1984-12-30|
    JPS60141843A|1985-07-26|
    IL72850D0|1984-12-31|
    JPH0569891B2|1993-10-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4292076A|1979-04-27|1981-09-29|General Electric Company|Transverse ductile fiber reinforced eutectic nickel-base superalloys|
    CA1212020A|1981-09-14|1986-09-30|David N. Duhl|Minor element additions to single crystals forimproved oxidation resistance|
    US4451431A|1982-10-25|1984-05-29|Avco Corporation|Molybdenum-containing high temperature coatings for nickel- and cobalt-based superalloys|
    GR80048B|1983-12-27|1984-11-30|Gen Electric|Yttrium and yttrium-silicon bearing nickel-based superalloys especially useful as comptible coatings for advanced superalloys|GR80048B|1983-12-27|1984-11-30|Gen Electric|Yttrium and yttrium-silicon bearing nickel-based superalloys especially useful as comptible coatings for advanced superalloys|
    IL80227A|1985-11-01|1990-01-18|United Technologies Corp|High strength single crystal superalloys|
    JP3209902B2|1995-11-06|2001-09-17|キャノン・マスキーガン・コーポレーション|High temperature corrosion resistant single crystal nickel-based superalloys|
    US8876989B2|2007-08-31|2014-11-04|General Electric Company|Low rhenium nickel base superalloy compositions and superalloy articles|
    US20130230405A1|2007-08-31|2013-09-05|Kevin Swayne O'Hara|Nickel base superalloy compositions being substantially free of rhenium and superalloy articles|
    WO2009085420A1|2007-12-26|2009-07-09|General Electric Company|Nickel base superalloy compositions, superalloy articles, and methods for stabilizing superalloy compositions|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US56580283A| true| 1983-12-27|1983-12-27|
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