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    Process for forming thermal barrier coating resistant to infiltration
    2.
    发明授权
    Process for forming thermal barrier coating resistant to infiltration 有权
    形成防渗涂层的方法

    公开(公告)号：US07807231B2

    公开(公告)日：2010-10-05

    申请号：US11164615

    申请日：2005-11-30

    申请人： Mark Daniel Gorman ,  Bangalore Aswatha Nagaraj ,  Robert Edward Schafrik

    发明人： Mark Daniel Gorman ,  Bangalore Aswatha Nagaraj ,  Robert Edward Schafrik

    IPC分类号： H05H1/24 ,  B05D3/06 ,  B05D5/00 ,  B05D3/04 ,  B05D3/02 ,  B05D3/14

    CPC分类号： C23C4/18 ,  C23C28/321 ,  C23C28/3215 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  F01D5/288 ,  F05D2230/40

    摘要： A process for protecting a thermal barrier coating (TBC) on a component used in a high-temperature environment, such as the hot section of a gas turbine engine. The process applies a protective film on the surface of the TBC to resist infiltration of contaminants such as CMAS that can melt and infiltrate the TBC to cause spallation. The process generally entails applying to the TBC surface a metal composition containing at least one metal whose oxide resists infiltration of CMAS into the TBC. The metal composition is applied so as to form a metal film on the TBC surface and optionally to infiltrate porosity within the TBC beneath its surface. The metal composition is then converted to form an oxide film, with at least a portion of the oxide film forming a surface deposit on the TBC surface.

    摘要翻译： 一种用于在诸如燃气涡轮发动机的热部分的高温环境中使用的部件上保护热障涂层（TBC）的方法。 该方法在TBC的表面上施加保护膜以防止可能熔化和渗透TBC的污染物诸如CMAS的污染物渗透以引起剥落。 该方法通常需要向TBC表面施加含有至少一种金属的金属组合物，该金属的氧化物抵抗CMAS渗透到TBC中。 施加金属组合物以在TBC表面上形成金属膜，并且任选地在其表面下方的TBC内渗透孔隙。 然后将金属组合物转化成氧化物膜，其中至少一部分氧化膜在TBC表面上形成表面沉积物。

    THERMAL BARRIER COATING SYSTEMS
    3.
    发明申请
    THERMAL BARRIER COATING SYSTEMS 审中-公开
    热障涂层系统

    公开(公告)号：US20090162690A1

    公开(公告)日：2009-06-25

    申请号：US11963976

    申请日：2007-12-24

    申请人： Bangalore Aswatha Nagaraj ,  David John Wortman ,  Michael Patrick Maly

    发明人： Bangalore Aswatha Nagaraj ,  David John Wortman ,  Michael Patrick Maly

    IPC分类号： B32B15/04

    CPC分类号： C22C19/056 ,  C23C28/321 ,  C23C28/3215 ,  C23C28/325 ,  C23C28/3455 ,  Y02T50/67 ,  Y02T50/6765 ,  Y10T428/12549

    摘要： Coating system for a metallic substrate includes a strengthened bond coat including a bond coat inner layer and an aluminum-containing layer overlying the bond coat inner layer. The bond coat inner layer is formed by deposition of a bond coat composition including, in weight percent, 14-20% Cr, 5-8% Al, 8-12% Co, 3-7% Ta, 0.1-0.6% Hf, 0.1-0.5% Y, up to about 1% Si, 0.005-0.020% Zr, 0.04-0.08% C, 0.01-0.02% B, with a remainder including Ni and incidental impurities, wherein the bond coat composition is substantially free of rhenium. The coating system includes an optional thermal barrier coating which may be a yttria-stabilized zirconia.

    摘要翻译： 用于金属基材的涂布系统包括包含粘合涂层内层和覆盖在粘合涂层内层上的含铝层的强化粘合涂层。 粘结涂层内层通过沉积粘结涂层组合物形成，该组合物包含重量百分比为14-20％的Cr，5-8％的Al，8-12％的Co，3-7％的Ta，0.1-0.6％的Hf， 0.1-0.5％Y，至多约1％Si，0.005-0.020％Zr，0.04-0.08％C，0.01-0.02％B，余量包括Ni和杂质，其中粘合涂层组合物基本上不含铼 。 涂层系统包括可选的热障涂层，其可以是氧化钇稳定的氧化锆。

    Thermal barrier coating protected by alumina and method for preparing same
    5.
    发明授权
    Thermal barrier coating protected by alumina and method for preparing same 失效
    由氧化铝保护的热障涂层及其制备方法

    公开(公告)号：US07008674B2

    公开(公告)日：2006-03-07

    申请号：US10990542

    申请日：2004-11-18

    申请人： Bangalore Aswatha Nagaraj ,  Brett Allen Boutwell ,  Robert George Baur

    发明人： Bangalore Aswatha Nagaraj ,  Brett Allen Boutwell ,  Robert George Baur

    IPC分类号： C23C4/10

    CPC分类号： F01D25/007 ,  C23C4/073 ,  C23C4/134 ,  C23C28/321 ,  C23C28/3215 ,  C23C28/3455 ,  C23C28/36 ,  F01D5/288 ,  F02C7/30 ,  F05D2300/134 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/12806 ,  Y10T428/24926 ,  Y10T428/265

    摘要： A thermal barrier coating for an underlying metal substrate of articles that operate at, or are exposed to, high temperatures, as well as being exposed to environmental contaminant compositions. This coating comprises an optional inner layer nearest to the underlying metal substrate comprising a non-alumina ceramic thermal barrier coating material in an amount up to 100%, and an outer layer having an exposed surface and comprising at least about 50% of a non-alumina ceramic thermal barrier coating material and alumina in an amount up to about 50% and sufficient to protect the thermal barrier coating at least partially against environmental contaminants that become deposited on the exposed surface. This coating can be used to provide a thermally protected article having a metal substrate and optionally a bond coat layer adjacent to and overlaying the metal substrate. The thermal barrier coating can be prepared by optionally forming the inner layer of the non-alumina ceramic thermal barrier coating material, and then codepositing the alumina and non-alumina ceramic thermal barrier coating material to form the outer layer.

    摘要翻译： 用于在高温下操作或暴露于高温以及暴露于环境污染物组合物的制品的基础金属基底的热障涂层。 该涂层包括最接近下面的金属基底的任选的内层，其包含至多100％的非氧化铝陶瓷热障涂层材料，外层具有暴露的表面，并且包含至少约50％ 氧化铝陶瓷热障涂层材料和氧化铝，其量高达约50％，并足以至少部分地防止热障涂层防止沉积在暴露表面上的环境污染物。 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合涂层的热保护制品。 可以通过任选地形成非氧化铝陶瓷热障涂层材料的内层，然后共沉积氧化铝和非氧化铝陶瓷热障涂层材料以形成外层，来制备热障涂层。

    Aluminide or chromide coating of turbine engine rotor component
    7.
    发明授权
    Aluminide or chromide coating of turbine engine rotor component 失效
    涡轮发动机转子部件的铝酸盐或铬酸盐涂层

    公开(公告)号：US06921251B2

    公开(公告)日：2005-07-26

    申请号：US10655835

    申请日：2003-09-05

    申请人： John Frederick Ackerman ,  Michael James Weimer ,  Joseph Aloysius Heaney ,  Robert George Zimmerman, Jr. ,  Bangalore Aswatha Nagaraj ,  Brian Thomas Hazel ,  Nripendra Nath Das

    发明人： John Frederick Ackerman ,  Michael James Weimer ,  Joseph Aloysius Heaney ,  Robert George Zimmerman, Jr. ,  Bangalore Aswatha Nagaraj ,  Brian Thomas Hazel ,  Nripendra Nath Das

    IPC分类号： C23C10/02 ,  C23C16/16 ,  C23C16/20 ,  F01D5/28 ,  F01D5/14

    CPC分类号： F01D5/288 ,  C23C10/02 ,  C23C16/16 ,  C23C16/20 ,  F05D2230/90 ,  F05D2300/611 ,  Y02T50/67

    摘要： A turbine engine rotor component, such as a compressor or turbine disk or seal element, is protected from corrosion by depositing an aluminum or chromium coating on the component. The deposition can be performed by a vapor deposition process, such as metal organic chemical vapor deposition (MOCVD), to a coating thickness of from about 0.2 to about 50 microns, typically from about 0.5 to about 3 microns. In one embodiment, the method is conducted in a vapor coating container having a hollow interior coating chamber, and includes the steps of loading the coating chamber with the component to be coated; and flowing a tri-alkyl aluminum or chromium carbonyl coating gas into the loaded coating chamber at a specified temperature, pressure, and time to deposit an aluminum or chromium coating on the surface of the component. The coated component is then heated in a nonoxidizing atmosphere to a specified temperature to form an aluminide or chromide coating on the surface. The coated component is typically then heated or maintained at an elevated temperature in the presence of oxygen to form an oxide coating on the surface of the component.

    摘要翻译： 诸如压缩机或涡轮盘或密封元件的涡轮发动机转子部件通过在组件上沉积铝或铬涂层来防止腐蚀。 沉积可以通过气相沉积工艺（例如金属有机化学气相沉积（MOCVD））进行，涂层厚度为约0.2至约50微米，通常为约0.5至约3微米。 在一个实施方案中，该方法在具有中空内部涂覆室的蒸气涂覆容器中进行，并且包括以下步骤：将涂覆室与要涂覆的组分装载; 并在规定的温度，压力和时间下将三烷基铝或铬羰基涂覆气体流入装载的涂覆室，以在组件的表面上沉积铝或铬涂层。 然后将涂覆的组分在非氧化气氛中加热至特定温度，以在表面上形成铝化物或铬酸盐涂层。 然后通常在氧存在下将涂覆的组分加热或保持在升高的温度，以在组分的表面上形成氧化物涂层。

    Method of forming a coating resistant to deposits and coating formed thereby
    9.
    发明授权
    Method of forming a coating resistant to deposits and coating formed thereby 有权
    形成耐镀层和由此形成的涂层的涂层的方法

    公开(公告)号：US06720038B2

    公开(公告)日：2004-04-13

    申请号：US10073564

    申请日：2002-02-11

    申请人： Ramgopal Darolia ,  Bangalore Aswatha Nagaraj

    发明人： Ramgopal Darolia ,  Bangalore Aswatha Nagaraj

    IPC分类号： C23L1430

    CPC分类号： C23C28/321 ,  C23C14/08 ,  C23C14/24 ,  C23C28/3215 ,  C23C28/322 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  Y10T428/12618

    摘要： A thermal barrier coating (TBC) system and method for forming the coating system on a component. The method generally entails forming a TBC on the surface of the component so that the TBC has at least an outer portion that is resistant to infiltration by CMAS. The TBC is formed by co-depositing first and second ceramic compositions by physical vapor deposition so that the entire TBC has columnar grains and at least the outer portion of the TBC is a mixture of the first and second ceramic compositions. The outer portion is preferably a continuation of the inner portion, such that the TBC is not characterized by discrete inner and outer coatings. The second ceramic composition serves to increase the resistance of the outer portion of the TBC to infiltration by molten CMAS. A platinum-group metal may be co-deposited with the first and second ceramic compositions, or deposited before the TBC and then diffused into the outer portion as a result of the parameters employed in the deposition process.

    摘要翻译： 一种隔热涂层（TBC）系统和在组件上形成涂层系统的方法。 该方法通常需要在组分的表面上形成TBC，使得TBC至少具有耐CMAS渗透的外部部分。 通过物理气相沉积共沉积第一和第二陶瓷组合物形成TBC，使得整个TBC具有柱状晶粒，并且至少TBC的外部部分是第一和第二陶瓷组合物的混合物。 外部部分优选地是内部部分的延续部分，使得TBC的特征在于分立的内部和外部涂层。 第二陶瓷组合物用于增加TBC的外部部分对熔融CMAS渗透的阻力。 铂族金属可以与第一和第二陶瓷组合物共沉积，或者在TBC之前沉积，然后作为沉积工艺中使用的参数而扩散到外部。

    Plasma sprayed thermal bond coat system
    10.
    发明授权
    Plasma sprayed thermal bond coat system 有权
    等离子喷涂热粘涂层系统

    公开(公告)号：US06607789B1

    公开(公告)日：2003-08-19

    申请号：US09842503

    申请日：2001-04-26

    申请人： Joseph David Rigney ,  Michael James Weimer ,  Bangalore Aswatha Nagaraj ,  Yuk-Chiu Lau

    发明人： Joseph David Rigney ,  Michael James Weimer ,  Bangalore Aswatha Nagaraj ,  Yuk-Chiu Lau

    IPC分类号： C23C404

    CPC分类号： C23C28/3455 ,  C23C4/02 ,  C23C28/321 ,  C23C28/345 ,  Y10T428/12611 ,  Y10T428/12944

    摘要： A method for forming a thermal barrier coating system on an article subjected to a hostile thermal environment, such as the hot gas path components of a gas turbine engine. The coating system is generally comprised of a ceramic layer and an environmentally resistant beta phase nickel aluminum intermetallic (&bgr;-NiAl) bond coat that adheres the ceramic layer to the component surface. A thin aluminum oxide scale forms on the surface of the &bgr;-NiAl during heat treatment. The &bgr;-NiAl may contain alloying elements in addition to nickel and aluminum in order to increase the environmental resistance of the &bgr;-NiAl. The &bgr;-NiAl powder having a size in the range of 20-50 microns is applied using air plasma spray techniques to produce a surface having a roughness of 400 microinches or rougher. The ceramic top coat can be applied using inexpensive thermal spray techniques to greater thicknesses than achievable otherwise because of the rough surface finish of the underlying &bgr;-NiAl bond coat.

    摘要翻译： 一种用于在遭受恶劣热环境的制品（例如燃气涡轮发动机的热气路径部件）上形成热障涂层系统的方法。 涂层系统通常包括陶瓷层和环境友好的β相镍铝金属间化合物（β-NiAl）粘合涂层，其将陶瓷层粘附到组件表面。 在热处理期间，在β-NiAl的表面上形成薄的氧化铝垢。 除了镍和铝之外，β-NiAl还可以含有合金元素，以增加β-NiAl的耐环境性。 使用空气等离子喷涂技术施加尺寸在20-50微米范围内的β-NiAl粉末，以产生粗糙度为400微英寸或更粗糙的表面。 陶瓷面漆可以使用廉价的热喷涂技术应用于厚度大于其它可能的厚度，因为底层β-NiAl粘合涂层的粗糙表面光洁度。