公开(公告)号：US06676381B2

公开(公告)日：2004-01-13

申请号：US10063249

申请日：2002-04-03

申请人： Pazhayannur Ramanathan Subramanian ,  Melvin Robert Jackson ,  Paul Leonard Dupree ,  Bernard Patrick Bewlay ,  Theodore McCall Evenden

发明人： Pazhayannur Ramanathan Subramanian ,  Melvin Robert Jackson ,  Paul Leonard Dupree ,  Bernard Patrick Bewlay ,  Theodore McCall Evenden

IPC分类号： F01D528

CPC分类号： B22D27/04 ,  F01D5/28 ,  F05D2230/21 ,  F05D2300/13 ,  Y02T50/67 ,  Y02T50/672

摘要： A method and apparatus for casting a near-net-shape article from a high temperature material, such as a refractory metal intermetallic composite material. The apparatus includes: a means for forming a molten material comprising at least one of a metal and an alloy; a means for pouring the molten material; a mold assembly comprising a solid shell having a face coat interposed between the solid shell and molten material; and a heater assembly for maintaining the solid shell at a temperature. The molten material solidifies within the solid shell to form a near-net shape of the article. The near-net shape article may be a turbine assembly component, such as, but not limited to, a vane or airfoil.

摘要翻译： 一种用于从诸如难熔金属金属间复合材料的高温材料铸造近网状制品的方法和装置。 该装置包括：用于形成包括金属和合金中的至少一种的熔融材料的装置; 用于浇注熔融材料的装置; 一种模具组件，其包括固体外壳，其具有介于所述固体壳和熔融材料之间的表面涂层; 以及用于将固体壳保持在一个温度下的加热器组件。 熔融的材料在固体壳体内固化以形成物品的近净形状。 近净形状制品可以是涡轮机组件部件，例如但不限于叶片或翼型件。

公开(公告)号：US08153052B2

公开(公告)日：2012-04-10

申请号：US10671851

申请日：2003-09-26

申请人： Melvin Robert Jackson ,  Bernard Patrick Bewlay ,  Judson Sloan Marte ,  Pazhayannur Ramanathan Subramanian ,  Ji-Cheng Zhao ,  Ann Melinda Ritter

发明人： Melvin Robert Jackson ,  Bernard Patrick Bewlay ,  Judson Sloan Marte ,  Pazhayannur Ramanathan Subramanian ,  Ji-Cheng Zhao ,  Ann Melinda Ritter

IPC分类号： B22F1/02

CPC分类号： C22C27/02 ,  B22F3/23 ,  C22C1/058 ,  C22C29/18 ,  C22C32/0078

摘要： The present invention provides a method for forming a refractory metal-intermetallic composite. The method includes providing a first powder comprising a refractory metal suitable for forming a metal phase; providing a second powder comprising a silicide precursor suitable for forming an intermetallic phase; blending the first powder and the second powder to form a powder blend; consolidating and mechanically deforming the powder blend at a first temperature; and reacting the powder blend at a second temperature to form the metal phase and the intermetallic phase of the refractory metal-intermetallic composite, wherein the second temperature is higher than the first temperature.

摘要翻译： 本发明提供了形成难熔金属 - 金属间复合材料的方法。 该方法包括提供包含适于形成金属相的难熔金属的第一粉末; 提供包含适于形成金属间相的硅化物前体的第二粉末; 混合第一粉末和第二粉末以形成粉末混合物; 在第一温度下固化和机械地使粉末混合物变形; 和在第二温度下使粉末混合物反应以形成难熔金属 - 金属间化合物的金属相和金属间相，其中第二温度高于第一温度。

公开(公告)号：US07704335B2

公开(公告)日：2010-04-27

申请号：US11189412

申请日：2005-07-26

申请人： Bernard Patrick Bewlay ,  Laurent Cretegny ,  Pazhayannur Ramanathan Subramanian ,  Melvin Robert Jackson

发明人： Bernard Patrick Bewlay ,  Laurent Cretegny ,  Pazhayannur Ramanathan Subramanian ,  Melvin Robert Jackson

IPC分类号： C22C27/02

CPC分类号： C22C27/02 ,  C22C29/18 ,  F01D25/005 ,  F05D2230/90 ,  F05D2300/611 ,  Y10T428/12806

摘要： A refractory composition is described, containing niobium, silicon, titanium, and at least one of rhenium and ruthenium. The amount of silicon in the composition is at least about 9 atom %, and the amount of titanium present is less than about 26 atom %, based on total atomic percent. Turbine engine components formed from such a composition are also disclosed.

摘要翻译： 描述了含有铌，硅，钛以及铼和钌中的至少一种的耐火材料组合物。 组合物中的硅的量为至少约9原子％，并且基于总原子百分比，存在的钛的量小于约26原子％。 还公开了由这种组合物形成的涡轮发动机部件。

公开(公告)号：US08247085B2

公开(公告)日：2012-08-21

申请号：US12275785

申请日：2008-11-21

申请人： Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

发明人： Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

IPC分类号： B32B15/00 ,  C22C30/00

CPC分类号： C22C27/02 ,  B32B15/01 ,  C22C27/06 ,  C22C30/00 ,  C23C10/26 ,  C23C10/28 ,  C23C14/0682 ,  C23C14/5806 ,  C23C30/00 ,  F01D5/286 ,  F05D2230/90 ,  F05D2260/95 ,  F05D2300/502 ,  Y02T50/67 ,  Y02T50/672 ,  Y10T428/12361 ,  Y10T428/12611 ,  Y10T428/12819

摘要： Coatings suitable for use as protective oxide-forming coatings on Nb-based substrates exposed to high temperatures and oxidative environments. The coatings contain chromium and/or molybdenum, preferably contains silicon, and optionally contains niobium, titanium, hafnium, iron, rhenium, tantalum, and/or tungsten, which in combination form multiple intermetallic phases, which in combination form one or more intermetallic phases that promote the formation of a slow-growing oxide scale. Depending on the particular coating composition, the intermetallic phases may be: a silicon-modified Cr2Nb Laves phase and optionally a chromium solid solution phase, a CrNbSi intermetallic phase, and/or an M3Si intermetallic phase where M is niobium, titanium, and/or chromium; or M5Si3, MSi2 and/or M3Si2 where M is molybdenum, niobium, titanium, chromium, hafnium, iron, rhenium, tantalum, and/or tungsten.

摘要翻译： 适用于暴露于高温和氧化环境的Nb基基底上的保护性氧化物形成涂层的涂料。 涂层含有铬和/或钼，优选含有硅，并且任选地包含铌，钛，铪，铁，铼，钽和/或钨，其组合形成多个金属间相，其组合形成一个或多个金属间相 促进形成缓慢生长的氧化皮。 根据特定的涂料组合物，金属间相可以是：硅改性的Cr 2 Nb Laves相和任选的铬固溶相，CrNbSi金属间相和/或M3Si金属间相，其中M是铌，钛和/或 铬; 或M5Si3，MSi2和/或M3Si2，其中M是钼，铌，钛，铬，铪，铁，铼，钽和/或钨。

公开(公告)号：US07337940B2

公开(公告)日：2008-03-04

申请号：US11409647

申请日：2006-04-24

申请人： Pazhayannur Ramanathan Subramanian ,  Bernard Patrick Bewlay ,  Earl Claude Helder ,  Timothy Joseph Trapp ,  Timothy Hanlon

发明人： Pazhayannur Ramanathan Subramanian ,  Bernard Patrick Bewlay ,  Earl Claude Helder ,  Timothy Joseph Trapp ,  Timothy Hanlon

IPC分类号： B23K20/12 ,  B23K37/00

CPC分类号： B23K20/1255 ,  B23K20/22

摘要： An apparatus for friction stir welding, a weld tool for friction stir welding, and a method for making a weld tool for friction stir welding are presented. The weld tool comprises doped tungsten. A method for manufacturing an article, where the method comprises providing the apparatus for friction stir welding, and the article produced by this method are also presented.

摘要翻译： 提出了一种摩擦搅拌焊接装置，用于摩擦搅拌焊接的焊接工具，以及用于制造用于摩擦搅拌焊接的焊接工具的方法。 焊接工具包括掺杂的钨。 一种用于制造制品的方法，其中所述方法包括提供用于摩擦搅拌焊接的装置，并且还提供了通过该方法制造的制品。

公开(公告)号：US07981520B2

公开(公告)日：2011-07-19

申请号：US12238675

申请日：2008-09-26

申请人： Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

发明人： Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

IPC分类号： B32B15/01 ,  C22C27/02

CPC分类号： B32B15/01 ,  Y10T428/12611 ,  Y10T428/12674 ,  Y10T428/12743 ,  Y10T428/12806 ,  Y10T428/12819

摘要： A coating suitable for use as protective oxide-forming coatings on Nb-based substrates, and particularly monolithic niobium-based alloys, exposed to high temperatures and oxidative environments. The coating contains aluminum, may further contain silicon, and optionally contains niobium, titanium, hafnium, and/or chromium, which in combination form one or more intermetallic phases that promote the formation of a slow-growing oxide scale. The intermetallic phases may be M(Al,Si)3, M5(Al,Si)3, and/or M3Si5Al2 where M is niobium, titanium, hafnium, and/or chromium.

摘要翻译： 适合用作Nb基基材上的保护性氧化物形成涂层的涂层，特别是暴露在高温和氧化环境下的整体式铌基合金。 该涂层含有铝，还可以含有硅，并且任选地含有铌，钛，铪和/或铬，它们组合形成促进形成缓慢生长氧化皮的一个或多个金属间相。 金属间相可以是M（Al，Si）3，M5（Al，Si）3和/或M3Si5Al2，其中M是铌，钛，铪和/或铬。

公开(公告)号：US20080142122A1

公开(公告)日：2008-06-19

申请号：US11612743

申请日：2006-12-19

申请人： Bernard Patrick Bewlay ,  Richard DiDomizio ,  Pazhayannur Ramanathan Subramanian ,  Voramon Supatarawanich Dheeradhada ,  Joseph David Rigney ,  Ramgopal Darolia

发明人： Bernard Patrick Bewlay ,  Richard DiDomizio ,  Pazhayannur Ramanathan Subramanian ,  Voramon Supatarawanich Dheeradhada ,  Joseph David Rigney ,  Ramgopal Darolia

IPC分类号： C23C22/05 ,  C22C27/02

CPC分类号： C22F1/18 ,  C22C27/02 ,  C23C8/12 ,  C23C10/20 ,  C23C12/02 ,  C23C14/06 ,  C23C16/30

摘要： Niobium silicide articles are described. They include a surface region enriched with at least about 25 atom % germanium, which can enhance the properties of the article. Methods for preparing these articles are described as well. According to one method, an article is formed from a niobium silicide composite material which contains a selected amount of germanium. The article is then heat-treated under conditions sufficient to increase the level of germanium in the surface region to at least about 25 atom %, based on the total composition of the surface region. In another embodiment, a germanium-containing material is applied over a niobium-silicide article, and then diffused into the surface region of the article by way of a heat treatment.

摘要翻译： 描述了铌硅化物制品。 它们包括富含至少约25原子％锗的表面区域，其可以增强制品的性质。 还描述了制备这些制品的方法。 根据一种方法，由含有选定量的锗的铌硅化物复合材料形成制品。 然后将该制品在足以使表面区域中的锗水平升至至少约25原子％的条件下进行热处理，基于表面积的总组成。 在另一个实施方案中，将含锗材料涂覆在铌硅化物制品上，然后通过热处理扩散到制品的表面区域。

公开(公告)号：US08039116B2

公开(公告)日：2011-10-18

申请号：US11835672

申请日：2007-08-08

申请人： Bernard Patrick Bewlay ,  Ramgopal Darolia ,  Voramon Supatarawanich Dheeradhada ,  Richard DiDomizio ,  Michael Francis Xavier Gigliotti ,  Joseph David Rigney ,  Pazhayannur Ramanathan Subramanian

发明人： Bernard Patrick Bewlay ,  Ramgopal Darolia ,  Voramon Supatarawanich Dheeradhada ,  Richard DiDomizio ,  Michael Francis Xavier Gigliotti ,  Joseph David Rigney ,  Pazhayannur Ramanathan Subramanian

IPC分类号： B32B15/01 ,  C22C27/02

CPC分类号： C22C29/16 ,  C21D1/09 ,  C22F1/04 ,  C23C4/18 ,  C23C8/02 ,  C23C28/321 ,  C23C28/345 ,  C23C28/3455 ,  C23C30/00 ,  Y02T50/67 ,  Y10T428/12493 ,  Y10T428/12611 ,  Y10T428/12674 ,  Y10T428/12743 ,  Y10T428/12806 ,  Y10T428/12819

摘要： Nb—Si based alloy articles comprising a Nb—Si based alloy upon which is disposed an environmentally-resistant coating are described. They include a coating comprising at least one phase selected from the group consisting of M(Al,Si)3, M5(Al,Si)3, and M3Si5Al2, wherein M is one or more of Nb, Ti, Hf, Cr. Such coating can improve the environmental (e.g., in oxidation-promoting environments) resistance of a Nb—Si based alloy and alloy articles. Methods for preparing these articles are described as well.

摘要翻译： 描述了包含Nb-Si基合金的Nb-Si基合金制品，其上设置有耐环境的涂层。 它们包括包含至少一种选自M（Al，Si）3，M5（Al，Si）3和M3Si5Al2的相的涂层，其中M是Nb，Ti，Hf，Cr中的一种或多种。 这种涂层可以改善Nb-Si基合金和合金制品的环境（例如，在氧化促进环境中）的电阻。 还描述了制备这些制品的方法。

公开(公告)号：US20110146848A1

公开(公告)日：2011-06-23

申请号：US12275785

申请日：2008-11-21

申请人： Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

发明人： Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

IPC分类号： C22C27/02 ,  B22F7/02 ,  C22C27/06 ,  C23C16/00 ,  B32B3/10 ,  B32B15/01

CPC分类号： C22C27/02 ,  B32B15/01 ,  C22C27/06 ,  C22C30/00 ,  C23C10/26 ,  C23C10/28 ,  C23C14/0682 ,  C23C14/5806 ,  C23C30/00 ,  F01D5/286 ,  F05D2230/90 ,  F05D2260/95 ,  F05D2300/502 ,  Y02T50/67 ,  Y02T50/672 ,  Y10T428/12361 ,  Y10T428/12611 ,  Y10T428/12819

摘要： Coatings suitable for use as protective oxide-forming coatings on Nb-based substrates exposed to high temperatures and oxidative environments. The coatings contain chromium and/or molybdenum, preferably contains silicon, and optionally contains niobium, titanium, hafnium, iron, rhenium, tantalum, and/or tungsten, which in combination form multiple intermetallic phases, which in combination form one or more intermetallic phases that promote the formation of a slow-growing oxide scale. Depending on the particular coating composition, the intermetallic phases may be: a silicon-modified Cr2Nb Laves phase and optionally a chromium solid solution phase, a CrNbSi intermetallic phase, and/or an M3Si intermetallic phase where M is niobium, titanium, and/or chromium; or M5Si3, MSi2 and/or M3Si2 where M is molybdenum, niobium, titanium, chromium, hafnium, iron, rhenium, tantalum, and/or tungsten.

摘要翻译： 适用于暴露于高温和氧化环境的Nb基基底上的保护性氧化物形成涂层的涂料。 涂层含有铬和/或钼，优选含有硅，并且任选地包含铌，钛，铪，铁，铼，钽和/或钨，其组合形成多个金属间相，其组合形成一个或多个金属间相 促进形成缓慢生长的氧化皮。 根据特定的涂料组合物，金属间相可以是：硅改性的Cr 2 Nb Laves相和任选的铬固溶相，CrNbSi金属间相和/或M3Si金属间相，其中M是铌，钛和/或 铬; 或M5Si3，MSi2和/或M3Si2，其中M是钼，铌，钛，铬，铪，铁，铼，钽和/或钨。

公开(公告)号：US20090042056A1

公开(公告)日：2009-02-12

申请号：US12238675

申请日：2008-09-26

申请人： Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

发明人： Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

IPC分类号： B32B15/01

CPC分类号： B32B15/01 ,  Y10T428/12611 ,  Y10T428/12674 ,  Y10T428/12743 ,  Y10T428/12806 ,  Y10T428/12819

摘要： A coating suitable for use as protective oxide-forming coatings on Nb-based substrates, and particularly monolithic niobium-based alloys, exposed to high temperatures and oxidative environments. The coating contains aluminum, may further contain silicon, and optionally contains niobium, titanium, hafnium, and/or chromium, which in combination form one or more intermetallic phases that promote the formation of a slow-growing oxide scale. The intermetallic phases may be M(Al,Si)3, M5(Al,Si)3, and/or M3Si5Al2 where M is niobium, titanium, hafnium, and/or chromium.

摘要翻译： 适合用作Nb基基材上的保护性氧化物形成涂层的涂层，特别是暴露在高温和氧化环境下的整体式铌基合金。 该涂层含有铝，还可以含有硅，并且任选地含有铌，钛，铪和/或铬，它们组合形成促进形成缓慢生长氧化皮的一个或多个金属间相。 金属间相可以是M（Al，Si）3，M5（Al，Si）3和/或M3Si5Al2，其中M是铌，钛，铪和/或铬。