Thermal barrier coating with improved strength and fracture toughness
    3.
    发明授权
    Thermal barrier coating with improved strength and fracture toughness 有权
    热障涂层具有改善的强度和断裂韧性

    公开(公告)号:US06663983B1

    公开(公告)日:2003-12-16

    申请号:US10064562

    申请日:2002-07-26

    IPC分类号: B32B1504

    摘要: A thermal barrier coating (TBC) (26) for a component (10) intended for use in a hostile environment, such as the superalloy turbine, combustor and augmentor components of a gas turbine engine. The TBC (26) is formed of at least partially stabilized zirconia, preferably yttria-stabilized zirconia (YSZ), and exhibits improved strength and fracture toughness as a result of containing a dispersion of chromia precipitates or particles (32). The TBC (26) preferably consists essentially of YSZ and the chromia particles (32), which are preferably dispersed throughout the microstructure of the TBC (26), including the YSZ grains (30) and grain boundaries. The chromia particles (32) constitute at least 1 to about 10 volume percent of the TBC (26).

    摘要翻译: 用于在敌对环境中使用的组件(10)的隔热涂层(TBC)(26),例如燃气涡轮发动机的超级合金涡轮机,燃烧器和增压器部件。 TBC(26)由至少部分稳定的氧化锆,优选氧化钇稳定的氧化锆(YSZ)形成,并且由于含有氧化铬析出物或颗粒(32)的分散体而显示出改善的强度和断裂韧性。 TBC(26)优选基本上由YSZ和氧化铬颗粒(32)组成,其优选分散在包括YSZ晶粒(30)和晶界的TBC(26)的整个微结构中。 氧化铁颗粒(32)构成TBC(26)的至少1至约10体积%。

    Physical vapor deposition apparatus and process
    5.
    发明授权
    Physical vapor deposition apparatus and process 有权
    物理气相沉积装置及工艺

    公开(公告)号:US06869508B2

    公开(公告)日:2005-03-22

    申请号:US10063808

    申请日:2002-05-15

    摘要: A PVD process and apparatus (120) for depositing a coating (132) from multiple sources (110, 111) of different materials. The process and apparatus (120) are particulaity intended to deposit a beta-nickel aluminide coating (132) containing one or more elements whose vapor pressures are lower than NiAl. The PVD process and apparatus (120) entail feeding at least two materials (110, 111) into a coating chamber (122) and evaporating the materials (110, 111) at different rates from separate molten pools (114, 115) thereof. Articles (130) to be coated are suspended within the coating chamber (122), and transported with a support apparatus (118) relative to the two molten pools (114, 115) so as to deposit a coating (132) with a controlled composition that is a mixture of the first and second materials (110, 111).

    摘要翻译: 一种用于从不同材料的多个源(110,111)沉积涂层(132)的PVD工艺和设备(120)。 该方法和装置(120)特别用于沉积含有一种或多种蒸气压低于NiAl的元素的β-镍铝化物涂层(132)。 PVD工艺和设备(120)需要将至少两种材料(110,111)进料到涂覆室(122)中并且以与其分离的熔池(114,115)不同的速率蒸发材料(110,111)。 待涂覆的制品(130)悬浮在涂覆室(122)内,并相对于两个熔池(114,115)用支撑装置(118)运输,以便沉积具有受控组合物的涂层(132) 即第一和第二材料(110,111)的混合物。

    Thermally-stabilized thermal barrier coating and process therefor
    7.
    发明授权
    Thermally-stabilized thermal barrier coating and process therefor 失效
    热稳定的热障涂层及其工艺

    公开(公告)号:US06492038B1

    公开(公告)日:2002-12-10

    申请号:US09723273

    申请日:2000-11-27

    IPC分类号: B32B1504

    摘要: A thermal barrier coating (TBC) and method for forming the coating on a component intended for use in a hostile environment. The coating and method are particularly directed to inhibiting sintering, grain coarsening/growth and pore redistribution in the coating during high temperature excursions by providing limited amounts of extremely fine carbide-based and/or nitride-based precipitates preferably formed at defects and pores at and between the grain boundaries of the TBC microstructure. The precipitates pin the TBC grain boundaries and pores during high temperature excursions, with the effect that the TBC microstructure is thermally stabilized. A coating containing the carbides and/or nitrides can be formed using a physical vapor deposition technique in an atmosphere that contains carbon and/or nitride gases or compounds thereof, or by evaporating a source material that contains carbon, carbon-containing compounds, carbides and/or nitrides.

    摘要翻译: 热障涂层(TBC)以及用于在敌对环境中使用的部件上形成涂层的方法。 涂层和方法特别涉及通过提供有限量的非常细小的碳化物基和/或氮化物基沉淀物,优选在缺陷和孔处形成,并且在高温偏移期间在缺陷和孔处形成,从而抑制涂层中的烧结,晶粒粗化/生长和孔再分布 在TBC微结构的晶界之间。 沉淀物在高温偏移期间将TBC晶粒边界和孔隙固定,从而使TBC微结构热稳定。 含有碳化物和/或氮化物的涂层可以使用物理气相沉积技术在含有碳和/或氮化物气体或其化合物的气氛中或通过蒸发含有碳,含碳化合物,碳化物的源材料和 /或氮化物。

    Process for a beta-phase nickel aluminide overlay coating
    10.
    发明授权
    Process for a beta-phase nickel aluminide overlay coating 有权
    一种β相镍铝覆盖涂层的工艺

    公开(公告)号:US07244467B2

    公开(公告)日:2007-07-17

    申请号:US10604368

    申请日:2003-07-15

    IPC分类号: C23C16/00

    摘要: A process for forming a beta-phase nickel aluminide (NiAl) overlay coating that is suitable for use as a bond coat for a thermal barrier coating (TBC). The overlay coating is deposited by a method that produces a generally columnar grain structure in which grains extend through the coating such that at least some grain boundaries are open at the coating surface. The coating is then peened with a particulate media, followed by heating the overlay coating to a temperature sufficient to cause the overlay coating to recrystallize and form new grain boundaries that are not open to the outer surface of the coating and significantly less susceptible to accelerated oxidation than the original grain boundaries. The particulate media is formed of a composition containing nickel and aluminum, such that an oxide scale that forms on the surface of the coating after the peening operation is substantially free of deleterious oxide compounds, notably iron-containing spinels.

    摘要翻译: 用于形成适合用作热障涂层(TBC)的粘合涂层的β-相镍铝化物(NiAl)覆盖涂层的方法。 覆盖涂层通过产生大致柱状晶粒结构的方法沉积,其中晶粒延伸穿过涂层,使得至少一些晶界在涂层表面开口。 然后用颗粒介质对涂层进行喷丸处理,然后将覆盖涂层加热至足以使覆盖涂层再结晶并形成不对涂层外表面开放的新晶粒边界,并显着降低易受加速氧化影响的温度 比原来的晶界。 颗粒介质由包含镍和铝的组合物形成,使得在喷丸操作之后在涂层表面上形成的氧化皮基本上不含有害氧化物化合物,特别是含铁尖晶石。