Thermal barrier coatings with protective outer layer for improved impact and erosion resistance
    101.
    发明授权
    Thermal barrier coatings with protective outer layer for improved impact and erosion resistance 失效
    具有保护外层的热障涂层,以改善冲击和耐冲蚀性

    公开(公告)号:US06875529B1

    公开(公告)日:2005-04-05

    申请号:US10748521

    申请日:2003-12-30

    摘要: A reduced thermal conductivity thermal barrier coating having improved impact and erosion resistance for an underlying metal substrate of articles that operate at, or are exposed to, high temperatures. This coating comprises an inner layer nearest to the underlying metal substrate comprising a ceramic thermal barrier coating material, as well as a protective outer layer adjacent to and overlaying the inner layer and having an exposed surface. The outer layer has a thickness up to about 5 mils (127 microns) sufficient to impart impact and erosion resistance to the thermal barrier coating, and comprises a zirconia-containing ceramic composition having a c/a ratio of the zirconia lattice in the range of from about 1.011 to about 1.016 and stabilized in the tetragonal phase by a stabilizing amount of a stabilizing metal oxide selected from the group consisting of yttria, calcia, ceria, scandia, magnesia, india, ytterbia and mixtures thereof. This coating can be used to provide a thermally protected article having a metal substrate and optionally a bond coated layer adjacent to and overlaying the metal substrate. The thermal barrier coating can be prepared by forming the inner layer comprising the ceramic thermal barrier coating material, followed by forming on the inner layer the protective outer layer.

    摘要翻译: 对于在高温下操作或暴露于高温的制品的底层金属基底,具有改善的耐冲击性和耐侵蚀性的降低的热导率热障涂层。 该涂层包括最靠近下面的金属基底的内层,其包含陶瓷热障涂层材料,以及与内层相邻并覆盖内层并具有暴露表面的保护外层。 外层具有足以赋予热障涂层抗冲击和耐腐蚀性的至多约5密耳(127微米)的厚度,并且包含含氧化锆的陶瓷组合物,其中氧化锆晶格的ac / a比范围为 约1.011至约1.016,并通过稳定量的选自氧化钇,氧化钙,二氧化铈,钪,氧化镁,印度,镱的稳定金属氧化物及其混合物在四方相中稳定化。 该涂层可用于提供具有金属基底和任选的与金属基底相邻并覆盖金属基底的粘结涂层的热保护制品。 可以通过形成包含陶瓷热障涂层材料的内层,然后在内层上形成保护外层来制备热障涂层。

    Method of depositing a coating on Si-based ceramic composites
    102.
    发明授权
    Method of depositing a coating on Si-based ceramic composites 失效
    在Si基陶瓷复合材料上沉积涂层的方法

    公开(公告)号:US06787195B2

    公开(公告)日:2004-09-07

    申请号:US10248635

    申请日:2003-02-03

    IPC分类号: C23C404

    摘要: A process of depositing a coating system suitable for use as an environmental barrier coating on various substrate materials, particularly those containing silicon and intended for high temperature applications such as the hostile thermal environment of a gas turbine engine. The process comprises depositing a first coating layer containing mullite, and preferably a second coating layer of an alkaline earth aluminosilicate, such as barium-strontium-aluminosilicate (BSAS), by thermal spraying while maintaining the substrate at a temperature of 800° C. or less, preferably 500° C. or less, by which a substantially crack-free coating system is produced with desirable mechanical integrity.

    摘要翻译: 一种沉积涂覆系统的方法,该涂覆系统适合用作各种基材上的环境屏障涂层,特别是含有硅并用于高温应用的那些涂层系统,例如燃气涡轮发动机的恶劣的热环境。 该方法包括通过热喷涂沉积包含莫来石的第一涂层,优选地是碱土金属硅铝酸盐的第二涂层,例如钡 - 锶 - 硅酸铝(BSAS),同时将基材保持在800℃的温度,或 较少,优选500℃或更低,由此产生具有期望的机械完整性的基本上无裂纹的涂层体系。

    Article protected by a thermal barrier coating system and its fabrication
    103.
    发明授权
    Article protected by a thermal barrier coating system and its fabrication 失效
    文章由热障涂层系统及其制造保护

    公开(公告)号:US06706325B2

    公开(公告)日:2004-03-16

    申请号:US09944909

    申请日:2001-08-31

    IPC分类号: C23C1408

    摘要: An article protected by a thermal barrier coating system is fabricated by providing an article substrate having a substrate surface, thereafter depositing a bond coat on the substrate surface, the bond coat having a bond coat surface, and thereafter processing the bond coat to flatten the bond coat surface. A thermal barrier coating is deposited overlying the bond coat surface. The thermal barrier coating is yttria-stabilized zirconia having a yttria content of from about 3 percent by weight to about 5 percent by weight of the yttria-stabilized zirconia.

    摘要翻译: 通过提供具有基材表面的制品基材,然后在基材表面上沉积粘合涂层,粘合涂层具有粘合涂层表面,然后加工粘合涂层使粘合剂平坦化,制造由热障涂层系统保护的物品 外套表面。 覆盖在粘结涂层表面上的热障涂层被沉积。 热障涂层是氧化钇稳定的氧化锆,其氧化钇含量为氧化钇稳定的氧化锆的约3重量%至约5重量%。

    Environmental/thermal barrier coating system with silica diffusion barrier layer
    104.
    发明授权
    Environmental/thermal barrier coating system with silica diffusion barrier layer 有权
    具有二氧化硅扩散阻挡层的环境/热障涂层系统

    公开(公告)号:US06607852B2

    公开(公告)日:2003-08-19

    申请号:US09894249

    申请日:2001-06-27

    IPC分类号: B32B904

    摘要: Improved adhesion of thermal barrier coating systems to nonmetallic substrates using a layer of silica on an underlying nonmetallic substrate that includes a silicon containing material is described. The improved adhesion occurs because the improved thermal barrier system improves the temperature capability of the system by providing a layer adjacent the substrate that has improved thermal performance and that is not subject to deterioration. The application of a silica layer of predetermined thickness adjacent the substrate also forms a diffusion barrier for oxygen while eliminating the need to transform an external layer of the substrate by a pre-oxidation step. This diffusion barrier prevents any oxidizable component of the substrate from decomposing. The thermal/environmental barrier coating (T/EBC) system includes an intermediate layer containing YSZ and BSAS, mullite and/or alumina, which is preferably used in combination with a mullite layer that overlies the surface of the silica layer, a layer of BSAS between the mullite layer and the intermediate layer, and a thermal barrier coating of YSZ overlying the intermediate layer.

    摘要翻译: 描述了在包括含硅材料的下面的非金属基底上使用一层二氧化硅改善了热障涂层系统对非金属基底的粘合性。 改善的粘合性是因为改进的热障系统通过提供具有改善的热性能并且不会劣化的衬底附近的层来提高系统的温度能力。 在衬底附近施加预定厚度的二氧化硅层还形成氧的扩散阻挡层,而不需要通过预氧化步骤转化衬底的外层。 该扩散阻挡层防止基底的任何可氧化组分分解。 热/环境屏障涂层(T / EBC)系统包括含有YSZ和BSAS,莫来石和/或氧化铝的中间层,其优选与叠加在二氧化硅层表面上的莫来石层组合使用,BSAS层 在莫来石层和中间层之间,以及覆盖中间层的YSZ的热障涂层。

    Closed impeller with a coated vane
    105.
    发明授权
    Closed impeller with a coated vane 有权
    封闭叶轮带涂层叶片

    公开(公告)号:US09309895B2

    公开(公告)日:2016-04-12

    申请号:US13525562

    申请日:2012-06-18

    IPC分类号: F04D29/02 F04D29/16 F04D29/22

    摘要: A closed impeller has a base cover, which has a base interior surface, and a second cover. A vane, which has an inlet distal end and an outlet distal end, is on the base interior surface. The vane has low and high pressure side surfaces wherein they have a low or high pressure midpoint, respectively. A hard coating is on the low and high pressure side surfaces. The hard coating has a minimum low and high pressure coating thickness at their respective midpoints. The minimum low, as well as high, pressure coating thickness ranging between about 0.085 and about 0.8 of either one of the maximum outlet coating thickness at the outlet distal end or the maximum inlet coating thickness at the inlet distal end, respectively.

    摘要翻译: 封闭的叶轮具有底盖,其具有底部内表面和第二盖。 具有入口远端和出口远端的叶片在基部内表面上。 叶片具有低和高压侧表面,其中它们分别具有低压或高压中点。 硬涂层位于低压侧和高压侧表面。 硬涂层在各自的中点处具有最小的低压和高压涂层厚度。 分别在出口远端的最大出口涂层厚度或入口远端的最大入口涂层厚度中的任一个之间的最小低压力以及高的压力涂层厚度在约0.085和约0.8之间。

    Thermal barrier coating and process therefor
    108.
    发明授权
    Thermal barrier coating and process therefor 失效
    热障涂层及其工艺

    公开(公告)号:US07597966B2

    公开(公告)日:2009-10-06

    申请号:US11160164

    申请日:2005-06-10

    IPC分类号: B32B9/00

    摘要: A thermal barrier coating and deposition process for a component intended for use in a hostile thermal environment, such as the turbine, combustor and augmentor components of a gas turbine engine. The TBC has a first coating portion on at least a first surface portion of the component. The first coating portion is formed of a ceramic material to have at least an inner region, at least an outer region overlying the inner region, and a columnar microstructure whereby the inner and outer regions comprise columns of the ceramic material. The columns of the inner region are more closely spaced than the columns of the outer region so that the inner region of the first coating portion is denser than the outer region of the first coating portion, wherein the higher density of the inner region promotes the impact resistance of the first coating portion.

    摘要翻译: 用于在敌对热环境中使用的部件的热障涂层和沉积工艺,例如燃气轮机的涡轮机,燃烧器和增压器部件。 所述TBC在所述部件的至少第一表面部分上具有第一涂覆部分。 第一涂覆部分由陶瓷材料形成,至少具有内部区域,至少覆盖内部区域的外部区域和柱状微结构,由此内部和外部区域包括陶瓷材料的列。 内部区域的列与外部区域的列紧密地间隔开,使得第一涂覆部分的内部区域比第一涂覆部分的外部区域更致密,其中内部区域的较高密度促进了冲击 第一涂布部分的电阻。