利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

42 条记录 (耗时 0.026 秒)

    Method of improving environmental resistance of investment cast superalloy articles
    5.
    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
    6.
    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。

    Preparation of low-sulfur platinum and platinum aluminide layers in thermal barrier coatings
    8.
    发明授权
    Preparation of low-sulfur platinum and platinum aluminide layers in thermal barrier coatings 失效
    在热障涂层中制备低硫铂和铂铝化物层

    公开(公告)号：US06551423B1

    公开(公告)日：2003-04-22

    申请号：US09149018

    申请日：1998-09-08

    申请人： Irene T. Spitsberg ,  William S. Walston ,  Jon C. Schaeffer

    发明人： Irene T. Spitsberg ,  William S. Walston ,  Jon C. Schaeffer

    IPC分类号： C25D510

    CPC分类号： C23C28/321 ,  C23C26/00 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  Y02T50/67

    摘要： A method for preparing a coated nickel-base superalloy article reduces the sulfur content of the surface region of the metallic coating layers to low levels, thereby improving the adhesion of the coating layers to the article. The method includes depositing a first layer of platinum overlying the surface of a substrate, depositing a second layer of aluminum over the platinum, and final desulfurizing the article by heating the article to elevated temperature, preferably in hydrogen, and removing a small amount of material from the surface that was exposed during the step of heating. A ceramic layer may be deposited over the desulfurized article. The article may also be similarly desulfurized at other points in the fabrication procedure.

    摘要翻译： 制备涂覆的镍基超级合金制品的方法将金属涂层的表面区域的硫含量降低到低水平，从而改善涂层对制品的粘附性。 该方法包括沉积覆盖衬底表面的铂的第一层，在铂上沉积第二层铝，并通过将制品加热至升高的温度，优选在氢气中，并最终除去少量的材料，使制品最终脱硫 从在加热步骤期间暴露的表面。 陶瓷层可以沉积在脱硫制品上。 该制品也可以在制造过程中的其它点类似地脱硫。

    Method for repairing a thermal barrier coating
    9.
    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。