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42 条记录 (耗时 0.023 秒)

    Method for repairing a thermal barrier coating
    2.
    发明授权
    Method for repairing a thermal barrier coating 失效
    修补热障涂层的方法

    公开(公告)号：US06544346B1

    公开(公告)日：2003-04-08

    申请号：US08886504

    申请日：1997-07-01

    申请人： Warren D. Grossklaus, Jr. ,  Roger D. Wustman ,  John M. Powers ,  Jeffrey A. Conner ,  Jon C. Schaeffer

    发明人： Warren D. Grossklaus, Jr. ,  Roger D. Wustman ,  John M. Powers ,  Jeffrey A. Conner ,  Jon C. Schaeffer

    IPC分类号： B08B704

    CPC分类号： C23G1/20 ,  B22D29/002 ,  B23P2700/06 ,  C23C10/02 ,  C23C28/321 ,  C23C28/3215 ,  C23C28/325 ,  C23C28/3455

    摘要： A method of repairing a thermal barrier coating on a component designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method is particularly suited for completely removing a thermal insulating ceramic layer of thermal barrier coating system that includes a metallic bond coat, such as a diffusion aluminide or MCrAlY coating, between the surface of the component and the ceramic layer, while leaving the bond coat substantially undamaged. Furthermore, the method of this invention includes a technique by which ceramic material within cooling holes in the component can be removed without damaging the underlying bond coat. The process steps generally include removing the ceramic layer from the surface of the component by subjecting the ceramic layer to a caustic solution at an elevated temperature and pressure, and then removing ceramic material from the cooling hole by carefully directing a high-velocity fluid stream into the cooling hole. According to this invention, the high-velocity fluid stream is able to overcome the compressive stresses that otherwise anchor the ceramic in the cooling hole, yet does not remove or damage the bond coat underlying the ceramic.

    摘要翻译： 在设计用于恶劣热环境中的部件（例如燃气涡轮发动机的涡轮机，燃烧器和增压器部件）上修复热障涂层的方法。 该方法特别适于完全去除在元件表面和陶瓷层之间包括金属粘合涂层（例如扩散铝化物或MCrAlY涂层）的热障涂层系统的绝热陶瓷层，同时留下粘合涂层 基本没有损坏。 此外，本发明的方法包括可以除去组件内的冷却孔内的陶瓷材料而不损坏下面的粘合涂层的技术。 工艺步骤通常包括通过在升高的温度和压力下对陶瓷层进行苛性碱溶液从部件的表面除去陶瓷层，然后通过小心地将高速流体流引导到冷却孔中，从陶瓷材料中除去陶瓷材料 冷却孔。 根据本发明，高速流体流能够克服否则将陶瓷固定在冷却孔中的压缩应力，但是不会去除或损坏陶瓷下面的粘合涂层。

    Method of improving environmental resistance of investment cast superalloy articles
    3.
    发明授权
    Method of improving environmental resistance of investment cast superalloy articles 失效
    投资超高合金制品的耐环境性改善方法

    公开(公告)号：US06500283B1

    公开(公告)日：2002-12-31

    申请号：US08946017

    申请日：1997-10-07

    申请人： Jon C. Schaeffer ,  Wendy H. Murphy ,  Norman R. Lindblad

    发明人： Jon C. Schaeffer ,  Wendy H. Murphy ,  Norman R. Lindblad

    IPC分类号： C22F110

    CPC分类号： B22C3/00 ,  B22C9/10 ,  C22F1/10

    摘要： A method for promoting the environmental resistance of nickel, iron and cobalt-base superalloys of the type alloyed to develop a protective oxide scale. The method entails a technique for removing sulfur during or subsequent to the casting operation. The method generally includes casting a superalloy article in a mold cavity, and then heat treating the article while surfaces of the article are in contact with a compound containing a sulfide and/or oxysulfide-forming element, such as yttria, calcium oxide, magnesia, scandia, ceria, hafnia, zirconia, titania, lanthana, alumina and/or silica. The heat treatment is performed at a temperature sufficient to cause sulfur within the superalloy article to segregate to the surfaces of the article and react with the sulfide-forming element, thereby forming sulfides at the interface with the compound. The compound is then removed from the surfaces of the article so as to simultaneously remove the sulfides and any elemental sulfur that have segregated to the surface of the article.

    摘要翻译： 一种促进合金化的镍，铁和钴基超级合金的耐环境性的方法，以形成保护性氧化皮。 该方法需要一种在铸造操作期间或之后除去硫的技术。 该方法通常包括在模腔中铸造超合金制品，然后在制品的表面与含有硫化物和/或氧硫化物形成元素如氧化钇，氧化钙，氧化镁， 猩猩，二氧化铈，铪，氧化锆，二氧化钛，镧，氧化铝和/或二氧化硅。 热处理在足以使超合金制品内的硫分离到制品的表面并与硫化物形成元素反应的温度下进行，从而在与化合物的界面处形成硫化物。 然后将化合物从制品的表面除去，以便同时除去分离到制品表面的硫化物和任何元素硫。

    Substrate stabilization of superalloys protected by an aluminum-rich coating
    5.
    发明授权
    Substrate stabilization of superalloys protected by an aluminum-rich coating 有权
    由富含铝的涂层保护的超级合金的底物稳定性

    公开(公告)号：US06447932B1

    公开(公告)日：2002-09-10

    申请号：US09537647

    申请日：2000-03-29

    申请人： Kevin S. O'Hara ,  William S. Walston ,  Jon C. Schaeffer

    发明人： Kevin S. O'Hara ,  William S. Walston ,  Jon C. Schaeffer

    IPC分类号： C23C824

    CPC分类号： C23C12/00 ,  C23C28/00 ,  Y10T428/12458 ,  Y10T428/12576 ,  Y10T428/1259

    摘要： A coating system and method for forming the coating system on an article designed for use in a hostile environment, such as the superalloy turbine, combustor and augmentor components of a gas turbine engine. The method employs a nitrided zone in the surface of the superalloy substrate to inhibit the formation of deleterious topologically-close packed (TCP) phases in the substrate when protected by an aluminum-rich coating and optionally a thermal insulating ceramic layer. Superalloys of particular interest are those containing significant levels of TCP phase-forming elements, such as tungsten, rhenium, tantalum, molybdenum and chromium.

    摘要翻译： 一种用于在恶劣环境中使用的物品上形成涂层系统的涂覆系统和方法，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。 该方法在超合金基底的表面中使用氮化区，以在由富铝涂层和任选的绝热陶瓷层保护时抑制衬底中有害的拓扑密封（TCP）相的形成。 特别感兴趣的超级合金是含有显着水平的TCP相形成元素如钨，铼，钽，钼和铬的那些。

    Thermal barrier coating system and method therefor
    6.
    发明授权
    Thermal barrier coating system and method therefor 失效
    热障涂层系统及其方法

    公开(公告)号：US5891267A

    公开(公告)日：1999-04-06

    申请号：US783335

    申请日：1997-01-16

    申请人： Jon C. Schaeffer ,  Kevin S. O'Hara

    发明人： Jon C. Schaeffer ,  Kevin S. O'Hara

    IPC分类号： F01D5/28 ,  C23C28/00 ,  C23C30/00 ,  C23C8/10 ,  C23C8/20 ,  C23C8/80

    CPC分类号： C23C28/042 ,  C23C28/00 ,  C23C28/044

    摘要： A thermal barrier coating system and a method for forming the coating system on an article designed for use in a hostile thermal environment, such as superalloy turbine, combustor and augmentor components of a gas turbine engine. The coating system includes a carburized zone at the surface of a component on which a thermal barrier coating system is to be formed. An aluminum-rich bond coat is then formed on the carburized surface, followed by oxidation of the bond coat to form an aluminum oxide layer. A thermal insulating ceramic layer is then formed on the oxide layer, so as to be chemically bonded thereto. According to the invention, appropriately carburizing the surface of a component serves to form carbides that tie up refractory metals present in the underlying superalloy substrate of the component, and thereby prevents the detrimental effects of these metals on the bond coat-oxide layer interface. The benefit of the carburized zone is particularly notable where the component is a superalloy containing relatively high levels of one or more refractory metals, such as tantalum, tungsten, molybdenum, rhenium, titanium, chromium, hafnium and zirconium.

    摘要翻译： 一种热障涂层系统和在设计用于恶劣热环境中的物品上形成涂层系统的方法，例如燃气轮机的超级合金涡轮机，燃烧器和增压器部件。 涂层系统包括在其上将要形成热障涂层系统的部件的表面处的渗碳区域。 然后在渗碳表面上形成富铝的粘结涂层，然后氧化粘结涂层以形成氧化铝层。 然后在氧化物层上形成绝热陶瓷层，以便与其化学键合。 根据本发明，组分表面的适当渗碳用于形成结合组分的下层超耐热合金基底中存在的难熔金属的碳化物，从而防止这些金属对粘结涂层 - 氧化物层界面的不利影响。 渗碳区的好处是特别值得注意的是，组分是含有相对高含量的一种或多种难熔金属如钽，钨，钼，铼，钛，铬，铪和锆的高合金。

    Machine components and methods of fabricating
    7.
    发明授权
    Machine components and methods of fabricating 有权
    机械部件和制造方法

    公开(公告)号：US07842402B2

    公开(公告)日：2010-11-30

    申请号：US11395633

    申请日：2006-03-31

    申请人： Ganjiang Feng ,  Paul S. Dimascio ,  Jon C. Schaeffer

    发明人： Ganjiang Feng ,  Paul S. Dimascio ,  Jon C. Schaeffer

    IPC分类号： B32B15/04

    CPC分类号： F01D5/288 ,  C23C4/073 ,  C23C4/11 ,  C23C4/129 ,  C23C4/18 ,  C23C30/00 ,  F05D2230/311 ,  F05D2300/611 ,  Y10T428/12493 ,  Y10T428/12611 ,  Y10T428/12944 ,  Y10T428/31678

    摘要： A thermal barrier coating (TBC) system is provided. The system includes at least one thermal barrier coating (TBC) bond coat layer formed over a substrate surface region. The TBC bond coat layer includes at least one TBC bond coat material. The TBC bond coat material is a nickel-chromium-aluminum-yttrium (NiCrAlY) composition that also includes silicon (Si), hafnium (Hf) and less than 10 weight percent (wt %) cobalt (Co). The TBC system further includes at least one top coat layer formed over the TBC bond coat layer.

    摘要翻译： 提供了一种隔热涂层（TBC）系统。 该系统包括在衬底表面区域上形成的至少一个热障涂层（TBC）粘合涂层。 TBC粘合涂层包括至少一种TBC粘结涂层材料。 TBC粘合涂层材料是还包括硅（Si），铪（Hf）和小于10重量％（重量％）钴（Co）的镍 - 铬 - 铝 - 钇（NiCrAlY）组合物。 TBC系统还包括形成在TBC粘结涂层上的至少一个顶涂层。