Nanolaminate thermal barrier coatings
    3.
    发明授权
    Nanolaminate thermal barrier coatings 有权
    纳米酸盐热障涂层

    公开(公告)号:US07695830B2

    公开(公告)日:2010-04-13

    申请号:US11517138

    申请日:2006-09-06

    IPC分类号: B32B5/14 B32B15/04

    摘要: An article having a thermal barrier coating includes a superalloy substrate having a columnar grained ceramic coat formed thereon. The ceramic coat includes a nanolaminate region comprising repeating layers of ceramic material with each layer being less than 500 nm in thickness, with dispersions of metal oxide doping material situated between each of the layers. The ceramic coat further includes a non-doped region having a thickness greater than 500 nm adjacent to the nanolaminate region, the non-doped region including one layer or a plurality of adjacent layers of ceramic material without dispersions of metal oxide doping material situated between each of the layers. In one embodiment, and by way of example only, a bond coat is formed between the substrate and the columnar grained ceramic coat. According to another embodiment, the superalloy substrate forms an adherent alumina scale, and no bond coat is necessary.

    摘要翻译: 具有热障涂层的物品包括在其上形成有柱状粒状陶瓷涂层的超合金基底。 该陶瓷涂层包括一层纳米层状区域,其中每层厚度小于500nm的重复陶瓷材料层,其间位于每层之间的金属氧化物掺杂材料的分散体。 陶瓷涂层还包括与纳米级氨基酸区域相邻的厚度大于500nm的非掺杂区域,非掺杂区域包括一层或多层相邻的陶瓷材料层,而不分散在每层之间的金属氧化物掺杂材料 的层。 在一个实施方案中,仅作为实例,在基材和柱状粒状陶瓷涂层之间形成粘合涂层。 根据另一个实施方案,超合金基底形成粘附氧化铝垢,并且不需要粘合涂层。

    Method of forming bond coating for a thermal barrier coating
    4.
    发明申请
    Method of forming bond coating for a thermal barrier coating 有权
    形成热障涂层的粘结涂层的方法

    公开(公告)号:US20080193663A1

    公开(公告)日:2008-08-14

    申请号:US11703964

    申请日:2007-02-08

    IPC分类号: B05D1/22 C23C16/00

    摘要: According to a method for forming a coating system on a turbine engine component substrate that comprises a nickel-based superalloy substrate having at least one refractory metal included therein, a nickel-based layer is formed on the substrate, the nickel-based layer comprising at least one active material selected from the group consisting of elemental silicon and a silicon compound. The at least one active material is then diffused into the substrate. An yttrium-modified platinum aluminide bond coating, or a MCrAlX bond coating, may be then formed over the active material-modified nickel-based layer.

    摘要翻译: 根据在包括其中包含至少一种难熔金属的镍基超级合金基板的涡轮发动机部件基板上形成涂覆系统的方法,在基板上形成镍基层,所述镍基层包含在 选自由元素硅和硅化合物组成的组中的至少一种活性材料。 然后将至少一种活性材料扩散到基底中。 然后可以在活性材料改性的镍基层上形成钇改性的铂铝化物结合涂层或MCrAlX粘结涂层。

    Oxidation barrier coatings for silicon based ceramics
    9.
    发明授权
    Oxidation barrier coatings for silicon based ceramics 有权
    硅基陶瓷的氧化阻隔涂层

    公开(公告)号:US07323247B2

    公开(公告)日:2008-01-29

    申请号:US10719629

    申请日:2003-11-21

    IPC分类号: B32B9/00

    摘要: A protective barrier coating system including a diffusion barrier coating and an oxidation barrier coating and method for use in protecting silicon-based ceramic turbine engine components. A complete barrier coating system includes a thermal barrier coating of stabilized zirconia and an environmental barrier coating of an alloyed tantalum oxide. The oxidation barrier coating includes a layer of metallic silicates formed on a substrate of silicon nitride or silicon carbide to be protected. The oxidation barrier coating can include silicates of scandium, ytterbia or yttrium. The oxidation barrier coating may also include an inner layer of Si2ON2 between the diffusion barrier and the metallic silicate layer. The oxidation barrier coating can be applied to the substrate by spraying, slurry dipping and sintering, by a sol-gel process followed by sintering, by plasma spray, or by electron beam-physical vapor deposition. The diffusion layer of essentially pure Si3N4 can be applied to the substrate to prevent the migration of damaging cations from the protective layers to the substrate and is preferably formed by chemical vapor deposition. A method for protecting silicon based substrates can comprise a step of forming an oxidation barrier coating on a substrate, where a step of forming the oxidation barrier includes a step of sintering the oxidation barrier and substrate in a wet gas containing hydrogen.

    摘要翻译: 一种包括扩散阻挡涂层和氧化屏障涂层的保护性屏障涂层系统以及用于保护硅基陶瓷涡轮发动机部件的方法。 完整的阻隔涂层系统包括稳定的氧化锆的隔热涂层和合金化氧化钽的环境屏障涂层。 氧化阻挡涂层包括在待保护的氮化硅或碳化硅的衬底上形成的金属硅酸盐层。 氧化屏障涂层可以包括钪,镱或钇的硅酸盐。 氧化阻隔涂层还可以包括扩散阻挡层和金属硅酸盐层之间的Si 2 2 2 N 2的内层。 通过喷雾,浆料浸渍和烧结,通过溶胶 - 凝胶法烧结,通过等离子体喷涂,或通过电子束 - 物理气相沉积,可将氧化阻隔涂层施加到基材上。 可以将基本上纯的Si 3 N 4 N 4的扩散层施加到基底上,以防止损伤的阳离子从保护层迁移到基底,并且优选地由化学 气相沉积。 用于保护硅基基板的方法可以包括在基板上形成氧化阻挡涂层的步骤,其中形成氧化屏障的步骤包括在含氢的湿气中烧结氧化阻挡层和基板的步骤。

    Diffusion barrier coating for Si-based components
    10.
    发明授权
    Diffusion barrier coating for Si-based components 有权
    Si基组分的扩散阻挡涂层

    公开(公告)号:US07300702B2

    公开(公告)日:2007-11-27

    申请号:US10644523

    申请日:2003-08-18

    IPC分类号: B32B9/00

    摘要: A component comprising a silicon-based substrate and a diffusion barrier coating disposed on the silicon-based substrate. The diffusion barrier coating comprises an isolation layer disposed directly on the silicon-based substrate and at least one oxygen barrier layer disposed on the isolation layer. The oxygen barrier layer prevents the diffusion of oxygen therethrough, and prevents excessive oxidation of the silicon-based substrate. The isolation layer(s) prevent contaminants and impurities from reacting with the oxygen barrier layer. An environmental barrier coating may be disposed on the diffusion barrier coating, and a thermal barrier coating may be disposed on the environmental barrier coating. Methods for making a component having a diffusion barrier coating are also disclosed.

    摘要翻译: 一种组件,包括硅基衬底和设置在硅基衬底上的扩散阻挡涂层。 扩散阻挡涂层包括直接设置在硅基衬底上的隔离层和设置在隔离层上的至少一个氧阻挡层。 氧阻隔层防止氧气扩散通过其中,并防止硅基衬底的过度氧化。 隔离层防止污染物和杂质与氧阻隔层反应。 可以在扩散阻挡涂层上设置环境屏障涂层,并且可以在环境屏障涂层上设置热障涂层。 还公开了制备具有扩散阻挡涂层的组分的方法。