公开(公告)号：US06933062B2

公开(公告)日：2005-08-23

申请号：US09931347

申请日：2001-08-16

申请人： Bangalore Aswatha Nagaraj ,  Jeffrey Lawrence Williams

发明人： Bangalore Aswatha Nagaraj ,  Jeffrey Lawrence Williams

IPC分类号： C23C10/58 ,  C23C26/00 ,  C23C28/00 ,  B32B15/04 ,  F03B3/12

CPC分类号： C23C28/321 ,  C23C10/58 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  Y02T50/67 ,  Y10T428/12458 ,  Y10T428/12493 ,  Y10T428/12611 ,  Y10T428/12736 ,  Y10T428/12875 ,  Y10T428/12944 ,  Y10T428/265

摘要： An article protected by a protective coating has a substrate and a protective coating having an outer layer deposited upon the substrate surface and a diffusion zone formed by interdiffusion of the outer layer and the substrate. The protective coating includes platinum, aluminum, no more than about 2 weight percent hafnium, and substantially no silicon. The outer layer is substantially a single phase.

摘要翻译： 由保护涂层保护的物品具有基材和保护涂层，其外层沉积在基材表面上，而扩散区通过外层和基材的相互扩散形成。 保护涂层包括铂，铝，不超过约2重量％的铪，基本上不含硅。 外层基本上是单相。

公开(公告)号：US06905730B2

公开(公告)日：2005-06-14

申请号：US10615094

申请日：2003-07-08

申请人： John Frederick Ackerman ,  Michael James Weimer ,  Joseph Aloysius Heaney ,  William Scott Walston ,  Bangalore Aswatha Nagaraj

发明人： John Frederick Ackerman ,  Michael James Weimer ,  Joseph Aloysius Heaney ,  William Scott Walston ,  Bangalore Aswatha Nagaraj

IPC分类号： C23C10/08 ,  C23C16/04 ,  C23C16/20 ,  C23C16/56

CPC分类号： C23C16/56 ,  C23C10/08 ,  C23C16/045 ,  C23C16/20 ,  Y02T50/67

摘要： A method for forming an aluminide coating on a turbine engine component having an external surface and an internal cavity defined by an internal surface that is connected to the external surface by at least one hole. 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; flowing a tri-alkyl aluminum coating gas into the loaded coating chamber at a specified temperature, pressure, and time to deposit an aluminum coating on the external and internal surfaces of the component; and heating the component in a nonoxidizing atmosphere at a specified temperature and time to form an aluminide coating on the external and internal surfaces. The coated component is typically then maintained at an elevated temperature in the presence of oxygen to form an oxide coating on the external and internal surfaces of the component. In one embodiment, the turbine engine component is a turbine engine blade having an external surface and an internal cooling cavity having an internal surface that is connected to the external surface by cooling holes.

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。

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。

公开(公告)号：US06503574B1

公开(公告)日：2003-01-07

申请号：US08362050

申请日：1994-12-22

申请人： David William Skelly ,  Bangalore Aswatha Nagaraj ,  David John Wortman ,  David Vincent Rigney ,  Seetha Ramaiah Mannava ,  Rudolfo Viguie ,  Robert William Bruce ,  Warren Arthur Nelson ,  Curtis Alan Johnson ,  Bhupendra Kumar Gupta

发明人： David William Skelly ,  Bangalore Aswatha Nagaraj ,  David John Wortman ,  David Vincent Rigney ,  Seetha Ramaiah Mannava ,  Rudolfo Viguie ,  Robert William Bruce ,  Warren Arthur Nelson ,  Curtis Alan Johnson ,  Bhupendra Kumar Gupta

IPC分类号： B32B904

CPC分类号： F01D5/288 ,  C23C4/02 ,  Y02T50/67 ,  Y02T50/671 ,  Y10T428/12472 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/12993 ,  Y10T428/24521 ,  Y10T428/24545 ,  Y10T428/24612

摘要： An article having a substrate is protected by a thermal barrier coating system. An interfacial layer contacts the upper surface of the substrate. The interfacial layer may comprise a bond coat only, or a bond coat and an overlay coat. The interfacial layer has on its upper surface a preselected, controllable pattern of three-dimensional features, such as grooves in a parallel array or in two angularly offset arrays. The features are formed by an ablation process using an ultraviolet laser such as an excimer laser. A ceramic thermal barrier coating is deposited over the pattern of features on the upper surface of the interfacial layer.

摘要翻译： 具有基底的制品由热障涂层系统保护。 界面层接触基板的上表面。 界面层可以仅包含粘结层，或者粘合涂层和覆盖层。 界面层在其上表面上具有三维特征的预选的可控模式，例如平行排列的凹槽或两个角度偏移的阵列。 特征通过使用诸如准分子激光器的紫外激光的消融处理形成。 陶瓷热障涂层沉积在界面层上表面上的特征图案上。

公开(公告)号：US08722202B2

公开(公告)日：2014-05-13

申请号：US12347676

申请日：2008-12-31

申请人： Bangalore Aswatha Nagaraj ,  Marie Ann McMasters

发明人： Bangalore Aswatha Nagaraj ,  Marie Ann McMasters

IPC分类号： B32B18/00 ,  B32B15/04 ,  C23C16/06 ,  C23C16/40 ,  F23R3/00

CPC分类号： F01D5/288 ,  C23C4/08 ,  C23C28/321 ,  C23C28/3215 ,  C23C28/322 ,  C23C28/345 ,  C23C28/3455 ,  F01D5/284

摘要： A method and system for enhancing the heat transfer of turbine engine components is disclosed that includes applying a metallic coating having a high thermal conductivity to the cold side of a turbine component to enhance heat transfer away from the component. The metallic coating may be roughened to improve heat transfer. The metal coating may be a Ni—Al bond coating having an aluminum content greater than about 50 weight percent.

摘要翻译： 公开了一种用于增强涡轮发动机部件的传热的方法和系统，其包括将具有高导热性的金属涂层施加到涡轮部件的冷侧，以增强远离部件的热传递。 金属涂层可以被粗糙化以改善热传递。 金属涂层可以是铝含量大于约50重量％的Ni-Al键涂层。

公开(公告)号：US20080113095A1

公开(公告)日：2008-05-15

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： B05D1/36 ,  B05D7/00 ,  B05D3/02

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。

公开(公告)号：US07208230B2

公开(公告)日：2007-04-24

申请号：US10651420

申请日：2003-08-29

申请人： John Frederick Ackerman ,  Paul Vincent Arszman ,  Bangalore Aswatha Nagaraj ,  Nicole Justis

发明人： John Frederick Ackerman ,  Paul Vincent Arszman ,  Bangalore Aswatha Nagaraj ,  Nicole Justis

IPC分类号： B32B15/00 ,  B32B15/04

CPC分类号： F23M5/00 ,  C23C28/322 ,  C23C28/345 ,  C23C28/3455 ,  C23C30/00 ,  F01D5/288 ,  F05D2230/314 ,  F05D2230/90 ,  F05D2300/504 ,  F05D2300/611 ,  F23M2900/05004 ,  F23R3/007 ,  Y02T50/67 ,  Y02T50/672 ,  Y02T50/673 ,  Y10T428/12

摘要： A high temperature gas turbine component for use in the gas flow path that comprises a specular optical reflector coating system. A thin specular optical reflector coating system is applied to the gas flow path of the component, that is, the surface of the component that forms a boundary for hot combustion gases. The component typically includes a thermal barrier coating overlying the high temperature metallic component that permits the component to operate at elevated temperatures. The thermal barrier coating must be polished in order to provide a surface that can suitably reflect the radiation into the gas flow path. The thin reflector coating system comprises a thin high temperature and corrosion resistant refractory stabilizing layer, which is applied over a thin reflective metal layer, which is applied over a thin high temperature and corrosion resistant refractory sealing layer. The coating system is applied over the polished thermal barrier coating by a process that can adequately adhere the reflector to the polished surface without increasing the roughness of the surface. The coating system reflects radiation back into the hot gas flow path or into the atmosphere. The reflected radiation is not focused onto any other hardware component. The design of the component is such that the radiation is returned to the gas flow path or sent to the atmosphere rather than absorbed into a component that only serves to increase the temperature of such a component.

摘要翻译： 一种用于气体流路的高温燃气轮机部件，包括镜面光反射涂层系统。 将薄镜面光反射涂层系统应用于部件的气体流动路径，即构成热燃气体边界的部件的表面。 该部件通常包括覆盖高温金属部件的热障涂层，其允许部件在升高的温度下操作。 必须抛光热障涂层，以便提供可以适当地将辐射反射到气体流动路径中的表面。 薄反射器涂层系统包括薄的耐高温和耐腐蚀的耐火稳定层，其被涂覆在薄的反射金属层上，其被涂覆在薄的耐高温和耐腐蚀的耐火密封层上。 涂层系统通过可以将反射器充分地粘附到抛光表面而不增加表面粗糙度的方法施加在抛光的热障涂层上。 涂层系统将辐射反射回热气流路径或大气中。 反射的辐射没有集中在任何其他硬件组件上。 部件的设计使得辐射返回到气体流动路径或送到大气中，而不是被吸收到仅用于增加这种部件的温度的部件中。

公开(公告)号：US07094450B2

公开(公告)日：2006-08-22

申请号：US10426280

申请日：2003-04-30

申请人： Bangalore Aswatha Nagaraj ,  Eva Zielonka Lanman ,  Deborah Anne Schorr ,  Thomas John Tomlinson ,  Raymond William Heidorn ,  David Allen Kastrup ,  Craig Douglas Young

发明人： Bangalore Aswatha Nagaraj ,  Eva Zielonka Lanman ,  Deborah Anne Schorr ,  Thomas John Tomlinson ,  Raymond William Heidorn ,  David Allen Kastrup ,  Craig Douglas Young

IPC分类号： C23C4/06 ,  C23C4/10

CPC分类号： C23C4/00 ,  C23C4/02 ,  C23C28/3215 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/36 ,  F01D5/005 ,  F01D5/288 ,  F05D2230/312 ,  Y10T29/49318 ,  Y10T428/12618 ,  Y10T428/12736

摘要： A method applying a thermal barrier coating to a metal substrate, or for repairing a thermal barrier coating previously applied by physical vapor deposition to an underlying aluminide diffusion coating that overlays the metal substrate. The aluminide diffusion coating is treated to make it more receptive to adherence of a plasma spray-applied overlay alloy bond coat layer. An overlay alloy bond coat material is then plasma sprayed on the treated aluminide diffusion coating to form an overlay alloy bond coat layer. A ceramic thermal barrier coating material is plasma sprayed on the overlay alloy bond coat layer to form the thermal barrier coating. In the repair embodiment of this method, the physical vapor deposition-applied thermal barrier coating is initially removed from the underlying aluminide diffusion coating.

摘要翻译： 将热障涂层施加到金属基底上的方法，或者将先前通过物理气相沉积施加的热障涂层修复到覆盖金属基底的下面的铝化物扩散涂层。 处理铝化物扩散涂层以使其更容易接受等离子体喷涂覆盖合金粘合涂层的粘附。 然后将覆盖合金粘合涂层材料等离子体喷涂在经处理的铝化物扩散涂层上以形成覆盖合金粘合涂层。 将陶瓷热障涂层材料等离子体喷涂在覆盖合金粘合涂层上以形成热障涂层。 在该方法的修复实施例中，首先从下面的铝化物扩散涂层去除物理气相沉积涂覆的热障涂层。

公开(公告)号：US06933061B2

公开(公告)日：2005-08-23

申请号：US10317730

申请日：2002-12-12

申请人： Bangalore Aswatha Nagaraj ,  Brett Allen Boutwell ,  Todd Jay Rockstroh ,  Wilbur Douglas Scheidt

发明人： Bangalore Aswatha Nagaraj ,  Brett Allen Boutwell ,  Todd Jay Rockstroh ,  Wilbur Douglas Scheidt

IPC分类号： C23C4/18 ,  C23C26/02 ,  C23C28/00 ,  F01D5/28 ,  B32B15/04 ,  B05D3/00 ,  F03B3/12 ,  C03C16/00

CPC分类号： C23C4/18 ,  C23C26/02 ,  C23C28/3215 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/36 ,  F01D5/288 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/24917 ,  Y10T428/24926 ,  Y10T428/26

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 inner layer nearest to the underlying metal substrate comprising a ceramic thermal barrier coating material having a melting point of at least about 2000° F. (1093° C.), as well as a thermally glazed outer layer having an exposed surface and a thickness up to 0.4 mils (about 10 microns) and sufficient to at least partially protect the thermal barrier coating against environmental contaminants that become deposited on the exposed surface, and comprising a thermally glazeable coating material having a melting point of at least about 2000° F. (1093° C.) in an amount up to 100%. 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 depositing the thermally glazeable coating material on the inner layer, and then thermally melting the thermally glazeable coating material to form the thermally glazed 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内层，该内层包括具有至少约2000°F（1093℃）的熔点的陶瓷热障涂层材料，以及具有暴露表面的热上光外层 并且厚度高达0.4密耳（约10微米），并且足以至少部分地保护热障涂层免受沉积在暴露表面上的环境污染物，并且包括具有至少约2000的熔点的热可釉的涂层材料 °F（1093℃），最高达100％。 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。 可以通过形成包括陶瓷热障涂层材料的内层，然后在内层上沉积热可釉涂层材料，然后热熔融热可釉涂层材料以形成热釉面外层来制备热障涂层。