公开(公告)号：US06511762B1

公开(公告)日：2003-01-28

申请号：US09707024

申请日：2000-11-06

申请人： Ching-Pang Lee ,  Robert Edward Schafrik ,  Ramgopal Darolia

发明人： Ching-Pang Lee ,  Robert Edward Schafrik ,  Ramgopal Darolia

IPC分类号： B32B1504

CPC分类号： F01D5/288 ,  B32B18/00 ,  B32B2311/22 ,  C04B35/111 ,  C04B35/486 ,  C04B35/488 ,  C04B37/026 ,  C04B2235/3225 ,  C04B2235/402 ,  C04B2235/404 ,  C04B2237/123 ,  C04B2237/125 ,  C04B2237/405 ,  C04B2237/62 ,  C23C28/321 ,  C23C28/3215 ,  C23C28/3455 ,  C23C28/36 ,  F01D5/183 ,  F05D2260/203 ,  Y02T50/67 ,  Y02T50/676 ,  Y10T428/12611 ,  Y10T428/24273 ,  Y10T428/24289 ,  Y10T428/24347 ,  Y10T428/24992 ,  Y10T428/249953 ,  Y10T428/249956 ,  Y10T428/24996

摘要： A cooling system for cooling of the flow path surface region of an engine component used in a gas turbine engine and a method for making a system for cooling of the flow path surface region of an engine component used in a gas turbine engine. The method comprises the steps of channeling apertures in a substrate to a diameter of about 0.0005″ to about 0.02″ to allow passage of cooling fluid from a cooling fluid source; applying a bond coat of about 0.0005″ to about 0.005″ in thickness to the substrate such that the bond coat partially fills the channels; applying a porous inner TBC layer of at least about 0.01″ in thickness to the bond coat, such that the TBC fills the channels; applying an intermediate ceramic layer that is more dense than the inner TBC layer on top of the porous TBC; applying an outer TBC layer over the intermediate layer; and, passing cooling fluid from a cooling fluid source through the channel into the porous TBC. The density of the outer TBC layer can be varied as needed to achieve desired cooling objectives. Because the channel exit is filled with porous TBC material, cooling fluid flows through the porous passageways into the inner TBC layer. Although the passageways provide a plurality of tortuous routes, the increased density of the TBC in the intermediate layer provides a resistance to flow of the cooling fluid and effectively causes the cooling fluid to more efficiently spread through the TBC in the inner layer before exiting at the outer surface.

摘要翻译： 一种用于冷却燃气涡轮发动机中使用的发动机部件的流路表面区域的冷却系统和用于制造用于燃气涡轮发动机的发动机部件的流路面区域的系统的方法。 该方法包括以下步骤：将衬底中的孔引导至约0.0005“至约0.02”的直径，以允许冷却流体从冷却流体源通过; 对基底施加厚度为约0.0005“至约0.005”的粘结层，使得粘结涂层部分填充通道; 将至少约0.01“的厚度的多孔内部TBC层施加到粘合涂层，使得TBC填充通道; 在多孔TBC的顶部施加比内部TBC层更致密的中间陶瓷层; 在所述中间层上施加外部TBC层; 并且将来自冷却流体源的冷却流体通过通道进入多孔TBC。 可以根据需要改变外部TBC层的密度以实现所需的冷却目标。 由于通道出口填充有多孔TBC材料，冷却流体流过多孔通道进入内部TBC层。 虽然通道提供了多条曲折的路线，但是TBC在中间层中的增加的密度提供了对冷却流体的流动的阻力，并有效地使冷却流体在内层中更加有效地扩散通过TBC， 外表面。

公开(公告)号：US06492038B1

公开(公告)日：2002-12-10

申请号：US09723273

申请日：2000-11-27

申请人： Joseph David Rigney ,  Ramgopal Darolia

发明人： Joseph David Rigney ,  Ramgopal Darolia

IPC分类号： B32B1504

CPC分类号： C23C14/0021 ,  C23C8/02 ,  C23C14/06 ,  C23C28/321 ,  C23C28/3215 ,  C23C28/324 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  F01D5/288 ,  F05D2230/90 ,  F05D2300/2118 ,  F05D2300/226 ,  F05D2300/228 ,  F05D2300/611 ,  Y10T428/12576 ,  Y10T428/12611 ,  Y10T428/249953 ,  Y10T428/249986

摘要： A thermal barrier coating (TBC) and method for forming the coating on a component intended for use in a hostile environment. The coating and method are particularly directed to inhibiting sintering, grain coarsening/growth and pore redistribution in the coating during high temperature excursions by providing limited amounts of extremely fine carbide-based and/or nitride-based precipitates preferably formed at defects and pores at and between the grain boundaries of the TBC microstructure. The precipitates pin the TBC grain boundaries and pores during high temperature excursions, with the effect that the TBC microstructure is thermally stabilized. A coating containing the carbides and/or nitrides can be formed using a physical vapor deposition technique in an atmosphere that contains carbon and/or nitride gases or compounds thereof, or by evaporating a source material that contains carbon, carbon-containing compounds, carbides and/or nitrides.

摘要翻译： 热障涂层（TBC）以及用于在敌对环境中使用的部件上形成涂层的方法。 涂层和方法特别涉及通过提供有限量的非常细小的碳化物基和/或氮化物基沉淀物，优选在缺陷和孔处形成，并且在高温偏移期间在缺陷和孔处形成，从而抑制涂层中的烧结，晶粒粗化/生长和孔再分布 在TBC微结构的晶界之间。 沉淀物在高温偏移期间将TBC晶粒边界和孔隙固定，从而使TBC微结构热稳定。 含有碳化物和/或氮化物的涂层可以使用物理气相沉积技术在含有碳和/或氮化物气体或其化合物的气氛中或通过蒸发含有碳，含碳化合物，碳化物的源材料和 /或氮化物。

公开(公告)号：US06436473B1

公开(公告)日：2002-08-20

申请号：US09929594

申请日：2001-08-14

申请人： Ramgopal Darolia ,  Joseph D. Rigney ,  Joshua L. Miller

发明人： Ramgopal Darolia ,  Joseph D. Rigney ,  Joshua L. Miller

IPC分类号： C23C1608

摘要： A diffusion aluminide coating having a graded structure is applied over a nickel base superalloy substrate. The coating has an inner region of a diffusion aluminide adjacent to the substrate rich in a reactive element, typically Hf, Si or combinations of the two. The near surface region is a diffusion aluminide which is substantially free of reactive elements. Such coatings when used as bond coats in thermal barrier coating systems exhibit improved spallation performance.

公开(公告)号：US06190471B1

公开(公告)日：2001-02-20

申请号：US09318635

申请日：1999-05-26

申请人： Ramgopal Darolia ,  William S. Walston

发明人： Ramgopal Darolia ,  William S. Walston

IPC分类号： C22F100

CPC分类号： C23C28/3215 ,  C22C19/057 ,  C23C26/00 ,  C23C28/321 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  Y02T50/67 ,  Y10T428/12944

摘要： A superalloy article has a protective layer thereon, either in the form of an environmental coating or a the bond coat for a thermal barrier coating system. The protective layer has a high content of hafnium and/or zirconium to improve the adherence and properties of the protective layer. To introduce the hafnium and/or zirconium into the protective layer, the nickel-base alloy substrate, to which the protective layer is applied, is prepared with an initially elevated content of the hafnium and/or zirconium. A conventional bond coat is applied to the substrate. In an interdiffusion treatment performed during coating and/or subsequently, hafnium and/or zirconium diffuses from the substrate into the bond coat.

摘要翻译： 超级合金制品在其上具有保护层，其形式为环境涂层或用于热障涂层系统的粘合涂层。 保护层具有高含量的铪和/或锆，以改善保护层的粘附性和性能。 为了将铪和/或锆引入保护层中，以最初升高的铪和/或锆含量制备了施加有保护层的镍基合金基底。 将常规的粘合涂层施加到基底上。 在涂覆期间和/或随后的相互扩散处理中，铪和/或锆从基底扩散到粘结层中。

公开(公告)号：US5712050A

公开(公告)日：1998-01-27

申请号：US411919

申请日：1995-03-28

申请人： Edward Harvey Goldman ,  Ramgopal Darolia ,  David John Wortman

发明人： Edward Harvey Goldman ,  Ramgopal Darolia ,  David John Wortman

IPC分类号： C23C4/06 ,  C23C4/12 ,  C23C30/00 ,  B32B15/04

CPC分类号： C23C4/12 ,  C23C30/00 ,  C23C4/06 ,  Y10T428/12486 ,  Y10T428/12931 ,  Y10T428/12944

摘要： A coated superalloy component includes a substrate article formed of a superalloy and an adherent coating over the substrate. The coating is a nickel-base superalloy containing 0.3 volume percent or more of a dispersed oxide of yttrium, hafnium and/or a rare earth, and, preferably, grain boundary strengthening elements such as carbon, zirconium, and boron. The oxide dispersoids improve the performance of the coating in service, reducing the incidence failures due to thermal fatigue, oxidation, and corrosion damage. The dispersoid-containing coating may be formed by directly depositing the oxide-containing coating, or by depositing a metallic coating under conditions which permit the formation of such dispersoids during the deposition process.

摘要翻译： 涂覆的超合金部件包括由超合金构成的基底制品和在基底上的粘附涂层。 涂层是含有0.3体积％以上的钇，铪和/或稀土的分散氧化物，优选为碳，锆，硼等晶界强化元素的镍基超合金。 氧化物分散体改善了涂层在使用中的性能，减少了由于热疲劳，氧化和腐蚀损坏引起的发生故障。 含分散质的涂层可以通过直接沉积含氧化物的涂层或者通过在允许在沉积过程中形成这种分散质的条件下沉积金属涂层来形成。

公开(公告)号：US5482789A

公开(公告)日：1996-01-09

申请号：US176613

申请日：1994-01-03

申请人： Kevin S. O'Hara ,  William S. Walston ,  Earl W. Ross ,  Ramgopal Darolia

发明人： Kevin S. O'Hara ,  William S. Walston ,  Earl W. Ross ,  Ramgopal Darolia

IPC分类号： C30B29/52 ,  C22C19/03 ,  C22C19/05 ,  C30B11/00 ,  B32B15/00

CPC分类号： C22C19/057 ,  C30B11/00 ,  C30B29/52 ,  Y10T428/1275 ,  Y10T428/12875 ,  Y10T428/12944

摘要： The present invention provides a nickel base superalloy having an improved combination of stress rupture life and microstructural stability with respect to the formation of TCP phases. A unique feature is the specific combination of the content of elements consisting of Al, Ti and W in a second range defined by their sum in a nickel base superalloy having high contents of rhenium, in excess of 1.3 atomic percent (about 4.0 weight percent) to lower the propensity for TCP phase formation and thus render the alloy more stable at high temperatures. The interaction of Ru with the remaining elements to modify the refractory element phase partitioning provides unique capabilities, causing elements to partition to the gamma phase or the gamma prime phase in a reverse direction than normally experienced in Ni-base superalloys. These Ni-base superalloys are termed Ru-containing Reverse Partitioning Ni-base Superalloys. The composition of these Reverse Partitioning Ni-base superalloys is in the range, in atomic percent, of 1.3-3% Re, 2.0-3.7% Ta, 4.0-18.0% Co, 0-0.2% Hf, 0-0.3% C, 0-0.05% B, 0-0.03% Y, 0-2.0% Mo, 1.5-7.2% Cr, 0-0.3% Cb, 12.0-15.0% Al, 0-1.3% Ti, 1.0-2.5% W, in combination with 0.25-4.0 Ru and the balance Ni and incidental impurities.

摘要翻译： 本发明提供了一种镍基超级合金，其相对于TCP相的形成具有改进的应力断裂寿命和微结构稳定性的组合。 一个独特的特征是由Al，Ti和W组成的元素的含量在第二范围内的特定组合，该第二范围由它们的总和在具有高含量的铼的镍基超级合金中限定，超过1.3原子％（约4.0重量％）， 以降低TCP相形成的倾向，从而使合金在高温下更稳定。 Ru与剩余元素的相互作用以改变难熔元素相分配提供独特的能力，使得元素在与Ni基超级合金中通常经历的相反方向上分配到γ相或γ'相。 这些Ni基超合金称为含Ru反向分选Ni基超合金。 这些反向分选的Ni基超级合金的组成在原子百分比范围内在1.3-3％Re，2.0-3.7％Ta，4.0-18.0％Co，0-0.2％Hf，0-0.3％C， 0-0.05％B，0-0.03％Y，0-2.0％Mo，1.5-7.2％Cr，0-0.3％Cb，12.0-15.0％Al，0-1.3％Ti，1.0-2.5％W，组合 用0.25-4.0 Ru，余量为Ni和杂质。

公开(公告)号：US5316866A

公开(公告)日：1994-05-31

申请号：US756953

申请日：1991-09-09

申请人： Edward H. Goldman ,  Ramgopal Darolia

发明人： Edward H. Goldman ,  Ramgopal Darolia

IPC分类号： C22C19/05 ,  C22F1/00 ,  C22F1/10 ,  C23C4/08 ,  C23C30/00 ,  F01D5/28 ,  B32B15/00

CPC分类号： C22C19/05 ,  B32B15/01 ,  C22C19/055 ,  C22C19/056 ,  C22C19/057 ,  C23C30/00 ,  F01D5/288 ,  Y02T50/67 ,  Y10T428/12535 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/12931 ,  Y10T428/12944

摘要： A superalloy component includes a substrate article of a superalloy, and a strengthenable, adherent coating on the substrate. The coating is preferably a nickel-base superalloy that is strengthened by the formation of gamma and gamma-prime phases. The coating is stronger than conventional MCrAlX coatings, and, therefore, more resistant to thermal fatigue. One operable coating has a composition, in weight percent, of about 7.5 percent cobalt, about 9 percent chromium, about 6 percent aluminum, about 1 percent titanium, about 1.5 percent molybdenum, about 4 percent tantalum, about 3 percent tungsten, about 3 percent rhenium, about 0.5 percent hafnium, about 0.3 percent yttrium, about 0.5 percent columbium, about 0.05 percent carbon, about 0.015 percent boron, about 0.015 percent zirconium, and balance nickel.

摘要翻译： 超合金部件包括超合金的基底制品和在基底上的可加强的粘附涂层。 该涂层优选是通过形成γ和γ-相的相而被强化的镍基超级合金。 涂层比传统的MCrAlX涂层更强，因此更耐热疲劳。 一个可操作的涂层具有重量百分比为约7.5％的钴，约9％的铬，约6％的铝，约1％的钛，约1.5％的钼，约4％的钽，约3％的钨，约3％ 铼，约0.5％的铪，约0.3％的钇，约0.5％的铌，约0.05％的碳，约0.015％的硼，约0.015％的锆和余量的镍。

公开(公告)号：US08084094B2

公开(公告)日：2011-12-27

申请号：US12465884

申请日：2009-05-14

申请人： Mark Daniel Gorman ,  Brian Thomas Hazel ,  Brett Allen Rohrer Boutwell ,  Ramgopal Darolia

发明人： Mark Daniel Gorman ,  Brian Thomas Hazel ,  Brett Allen Rohrer Boutwell ,  Ramgopal Darolia

IPC分类号： B05D3/04

CPC分类号： C23C10/02 ,  C23C10/48 ,  C23C10/50 ,  Y10T428/12458 ,  Y10T428/12736 ,  Y10T428/1275 ,  Y10T428/12861 ,  Y10T428/12875 ,  Y10T428/12944 ,  Y10T428/26 ,  Y10T428/265

摘要： A coating process for an article having a substrate formed of a metal alloy that is prone to the formation of a secondary reaction zone (SRZ). The coating process forms a coating system that includes an aluminum-containing overlay coating and a stabilizing layer between the overlay coating and the substrate. The overlay coating contains aluminum in an amount greater by atomic percent than the metal alloy of the substrate, such that there is a tendency for aluminum to diffuse from the overlay coating into the substrate. The stabilizing layer is predominantly or entirely formed of at least one platinum group metal (PGM), namely, platinum, rhodium, iridium, and/or palladium. The stabilizing layer is sufficient to inhibit diffusion of aluminum from the overlay coating into the substrate so that the substrate remains essentially free of an SRZ that would be deleterious to the mechanical properties of the alloy.

摘要翻译： 一种具有由容易形成二次反应区（SRZ）的金属合金形成的基材的制品的涂布方法。 涂覆工艺形成涂层系统，其包括含铝覆盖涂层和覆盖涂层与基底之间的稳定层。 覆盖涂层含有比基底的金属合金更大原子百分数的铝，使得铝从覆盖涂层扩散到基底中的倾向。 稳定层主要或完全由至少一种铂族金属（PGM），即铂，铑，铱和/或钯形成。 稳定层足以抑制铝从覆盖涂层扩散到衬底中，使得衬底基本上不含对合金的机械性能有害的SRZ。

公开(公告)号：US08083124B1

公开(公告)日：2011-12-27

申请号：US07615553

申请日：1990-11-19

申请人： Ramgopal Darolia ,  Warren Davis Grossklaus, Jr. ,  Murray Sawyer Smith ,  David Michael Matey ,  Paul Wencil Stanek

发明人： Ramgopal Darolia ,  Warren Davis Grossklaus, Jr. ,  Murray Sawyer Smith ,  David Michael Matey ,  Paul Wencil Stanek

IPC分类号： B23K1/00 ,  B23K5/00 ,  B23K20/26 ,  B23K20/00 ,  B23K23/00

CPC分类号： B23K20/023 ,  B23K20/16 ,  B23K20/233 ,  B23K2101/001 ,  B23K2103/26 ,  C22C19/056 ,  C22C19/057 ,  C22F1/10 ,  C30B29/52 ,  C30B33/06 ,  F01D5/147 ,  F01D5/16 ,  F05D2230/22 ,  F05D2230/233 ,  F05D2230/234

摘要： A method for joining a plurality of single crystal members includes providing a bonding foil with a composition match with that of the members and with a bonding temperature within the gamma prime solution temperature range of the members, but below the melting temperature of the foil and below the incipient melting temperature of the members. The foil is disposed between and in contact with opposing members to be joined while heated to and held at the bonding temperature for at least 10 hours.

摘要翻译： 一种用于连接多个单晶构件的方法包括提供具有与构件的组成匹配的组合物的接合箔和在构件的γ'溶液温度范围内的粘合温度，但低于箔的熔化温度和低于 成员的初始熔化温度。 箔被设置在相对的构件之间并且与待接合的相接构件接触，同时被加热并保持在接合温度下至少10小时。

公开(公告)号：US20100136254A1

公开(公告)日：2010-06-03

申请号：US11748625

申请日：2007-05-15

申请人： Ramgopal Darolia ,  Matthew Mark Weaver ,  Dennis Martin Corbly ,  Boris Alexeevich Movchan ,  Anatolii Ivanovich Ustinov

发明人： Ramgopal Darolia ,  Matthew Mark Weaver ,  Dennis Martin Corbly ,  Boris Alexeevich Movchan ,  Anatolii Ivanovich Ustinov

IPC分类号： B05D3/10

CPC分类号： F01D5/26 ,  C23C14/027 ,  C23C14/0688 ,  F01D5/288 ,  F05D2230/31 ,  F05D2230/90 ,  F05D2300/141 ,  F05D2300/21 ,  Y10T428/12611 ,  Y10T428/12722 ,  Y10T428/12847 ,  Y10T428/12896 ,  Y10T428/12944

摘要： A coating system and coating method for damping vibration in an airfoil of a rotating component of a turbomachine. The coating system includes a metallic coating on a surface of the airfoil, and a ceramic coating overlying the metallic coating. The metallic coating contains metallic particles dispersed in a matrix having a metallic and/or intermetallic composition. The metallic particles are more ductile than the matrix, and have a composition containing silver and optionally tin. The method involves ion plasma cleaning the surface of the airfoil before depositing the metallic coating and then the ceramic coating.

摘要翻译： 一种用于阻尼涡轮机的旋转部件的翼型中的振动的涂布系统和涂布方法。 涂层系统包括在翼型件的表面上的金属涂层和覆盖金属涂层的陶瓷涂层。 金属涂层含有分散在具有金属和/或金属间组合物的基体中的金属颗粒。 金属颗粒比基体更具韧性，并且具有包含银和任选的锡的组合物。 该方法包括在沉积金属涂层然后陶瓷涂层之前离子等离子体清洁翼型件的表面。