Oxidation barrier coatings for silicon based ceramics
    4.
    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
    5.
    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。

    NANOLAMINATE THERMAL BARRIER COATINGS
    7.
    发明申请
    NANOLAMINATE THERMAL BARRIER COATINGS 有权
    纳米酸盐热障涂层

    公开(公告)号:US20100068507A1

    公开(公告)日:2010-03-18

    申请号:US11517138

    申请日:2006-09-06

    IPC分类号: B32B5/00 B05D1/36

    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,其间位于各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。

    Protective barrier coatings
    8.
    发明申请
    Protective barrier coatings 有权
    防护涂料

    公开(公告)号:US20080193657A1

    公开(公告)日:2008-08-14

    申请号:US11704447

    申请日:2007-02-09

    IPC分类号: B05D3/02

    摘要: Exemplary embodiments of the invention provide barrier coated substrates and methods of coating a substrate with a barrier coating derived from sol gels. An example includes a barrier coated aerospace component that is subject to hot salt corrosion during use. The barrier coating is derived from oxidation of a coating composition that includes at least one sol gel. The barrier coating resists hot salt corrosion for an incubation period of such duration that an uncoated superalloy substrate under the same conditions would suffer corrosion to a depth of about 2.0 mils. Methods of applying the barrier coating include the steps of selecting a first liquid sol gel and wetting surfaces of the superalloy substrate with the selected first liquid sol gel. The wetted surfaces of the superalloy substrate are subjected to heat treatment. The heat treatment includes sintering of sol gel to oxide to produce a barrier coating.

    摘要翻译: 本发明的示例性实施方案提供了阻挡涂层的基材和使用衍生自溶胶凝胶的阻挡涂层涂覆基材的方法。 一个例子包括在使用过程中遭受热盐腐蚀的阻隔涂层航空航天部件。 阻挡涂层源自包括至少一种溶胶凝胶的涂料组合物的氧化。 阻隔涂层在相当条件下的未涂覆的超级合金基材将受到约2.0密耳深度的腐蚀的潜伏期下,抵抗热盐腐蚀。 施加阻隔涂层的方法包括以下步骤:用所选择的第一液体溶胶凝胶选择第一液体溶胶凝胶并润湿超合金基底的表面。 对超合金基板的润湿表面进行热处理。 热处理包括将溶胶凝胶烧结成氧化物以产生阻挡涂层。

    Platinum electrolyte for use in electrolytic plating
    9.
    发明授权
    Platinum electrolyte for use in electrolytic plating 有权
    用于电解电镀的铂电解液

    公开(公告)号:US06306277B1

    公开(公告)日:2001-10-23

    申请号:US09482335

    申请日:2000-01-14

    IPC分类号: C25D300

    CPC分类号: C25D3/50

    摘要: An electrolyte for use in electrolytic platinum platinum plating that results in reduced Cl, S, or P contaminant production. The bath comprises 0.01 to 320 g/lit of platinum in the form of the platinum salt dinitrodiammine platinum, Pt(NH3)2(NO2)2 or variants thereof and 0.1 to 240 g/lit of alkali metal carbonate M2CO3 or bicarbonate MHCO3 where M is selected from a group comprising lithium (Li), sodium (Na), potassium (K), rubidium (Rb) and cesium (Cs).

    摘要翻译: 用于电解铂铂电镀的电解质,其导致Cl,S或P污染物产生减少。 该浴包含0.01至320g / l铂的铂盐二硝基二胺铂,Pt(NH 3)2(NO 2)2或其变体形式的铂和0.1至240g / l的碱金属碳酸盐M2CO3或碳酸氢盐MHCO3,其中M 选自锂(Li),钠(Na),钾(K),铷(Rb)和铯(Cs)组成的组。