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1. 发明授权

US06584172B2 High performance X-ray target 有权
公开(公告)号：US06584172B2
公开(公告)日：2003-06-24
申请号：US10227692
申请日：2002-08-26
申请人： Thomas C. Tiearney , Thomas Robert Raber , Pazhayannur Ramanathan Subramanian , Srihari Balasubramanian
发明人： Thomas C. Tiearney , Thomas Robert Raber , Pazhayannur Ramanathan Subramanian , Srihari Balasubramanian
IPC分类号： H01J3510
CPC分类号： H01J35/108 , H01J2235/083
摘要： A brazed X-ray target includes a metallic cap and a graphite back including a nonlinear record groove attached thereto along a stepped surface. An upper corner joint of the stepped surface is distanced from a cap outer edge and a focal track where the maximum heat is generated during use of the target. The graphite back is extended outward toward the cap outer edge to increase a thermal storage of the graphite, and a recess is formed into the cap to maintain a selected moment of inertia of the target and thereby maintain the rotordynamics of a given X-ray tube.

2. 发明授权

US06707883B1 X-ray tube targets made with high-strength oxide-dispersion strengthened molybdenum alloy 失效
标题翻译：用高强度氧化物分散强化钼合金制成的X射线管靶
公开(公告)号：US06707883B1
公开(公告)日：2004-03-16
申请号：US10429443
申请日：2003-05-05
申请人： Thomas Carson Tiearney, Jr. , Srihari Balasubramanian , Pazhayannur Ramanathan Subramanian , Gregory Alan Steinlage , Mark Ernest Vermilyea , Liqin Wang
发明人： Thomas Carson Tiearney, Jr. , Srihari Balasubramanian , Pazhayannur Ramanathan Subramanian , Gregory Alan Steinlage , Mark Ernest Vermilyea , Liqin Wang
IPC分类号： H01J3510
CPC分类号： H01J35/108 , H01J2235/081 , H01J2235/085
摘要： An X-ray target material comprising an oxide-dispersion strengthened Mo (ODS-Mo) alloy. ODS-Mo refers to molybdenum strengthened by a fine dispersion of insoluble oxide particles of one or more of the following compounds: La2O3, Y2O3 and CeO2. ODS—Mo alloy improves upon the prior art by providing higher and more uniform strength and creep resistance over the applicable temperature range of large brazed graphite targets. This, in conjunction with higher-strength graphite, allows the target to spin faster without causing graphite burst, thus providing improvement in peak power. The recrystallization temperature of the fabricated material is high enough to maintain original properties through all target processing, including a very high-temperature braze cycle.
摘要翻译：包含氧化物分散强化Mo（ODS-Mo）合金的X射线靶材料。 ODS-Mo是指通过一种或多种以下化合物的不溶性氧化物颗粒的细分散体加强的钼：La2O3，Y2O3和CeO2。 ODS-Mo合金通过在大的钎焊石墨靶的适用温度范围内提供更高和更均匀的强度和抗蠕变性而改进现有技术。这与高强度石墨结合使靶能够更快旋转而不会引起石墨爆裂，从而提高峰值功率。所制造的材料的再结晶温度足够高以通过所有目标加工保持原始性能，包括非常高温的钎焊循环。

3. 发明申请

US20130160967A1 CASTING METHODS FOR MAKING ARTICLES HAVING A FINE EQUIAXED GRAIN STRUCTURE 审中-公开
标题翻译：用于制作具有精细晶粒结构的制品的铸造方法
公开(公告)号：US20130160967A1
公开(公告)日：2013-06-27
申请号：US13336470
申请日：2011-12-23
申请人： Akane Suzuki , Stephen Joseph Balsone , Andrew John Elliott , Michael Francis Xavier Gigliotti, JR. , Shyh-Chin Huang , Roger John Petterson , Stephen Francis Rutkowski , Pazhayannur Ramanathan Subramanian
发明人： Akane Suzuki , Stephen Joseph Balsone , Andrew John Elliott , Michael Francis Xavier Gigliotti, JR. , Shyh-Chin Huang , Roger John Petterson , Stephen Francis Rutkowski , Pazhayannur Ramanathan Subramanian
IPC分类号： B22D27/04 , B22D25/02 , B22D27/02
CPC分类号： B22D27/04
摘要： Methods for casting a metallic material to form a component are described. The component can be a superalloy-containing turbine part, for example. The general method includes the step of pouring the metallic material, in molten form, into an investment mold; and then rapidly immersing the entire investment mold into a bath that contains a low-melting liquid coolant metal, so as to achieve substantially uniform, multi-directional heat transfer out of the molten material. The molten material that solidifies to form the component is characterized by a fine-grained, equiaxed grain structure. Related embodiments include the use of two ingots that constitute the superalloy material. One ingot includes the oxygen-reactive elements, and is prepared by a vacuum-melting technique. The other ingot includes the remainder of the elements, and can be prepared by a number of techniques, such as air-melting processes.
摘要翻译：描述用于铸造金属材料以形成部件的方法。该组件例如可以是含有超合金的涡轮机部件。通常的方法包括以熔融形式将金属材料倒入投资模具中的步骤; 然后将整个投资模具快速浸入含有低熔点液体冷却剂金属的浴中，从而实现从熔融材料中的大致均匀的多方向热传递。凝固形成组分的熔融材料的特征在于细晶粒等轴晶粒结构。相关实施例包括使用构成超级合金材料的两个锭。一个锭包括氧反应元素，并通过真空熔融技术制备。另一个锭包括剩余的元素，并且可以通过许多技术制备，例如空气熔化过程。

4. 发明授权

US07981520B2 Oxide-forming protective coatings for niobium-based materials 有权
标题翻译：用于铌基材料的氧化物形成保护涂层
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。

5. 发明授权

US07919151B2 Methods of preparing wetting-resistant surfaces and articles incorporating the same 失效
标题翻译：制备耐湿表面的方法和包含其的制品
公开(公告)号：US07919151B2
公开(公告)日：2011-04-05
申请号：US11610542
申请日：2006-12-14
申请人： Tao Deng , Pazhayannur Ramanathan Subramanian , Ming Feng Hsu , Yuk-Chiu Lau , Margaret L. Blohm , Wayne Charles Hasz , Nitin Bhate , Kripa Kiran Varanasi , Gregory Allen O'Neil
发明人： Tao Deng , Pazhayannur Ramanathan Subramanian , Ming Feng Hsu , Yuk-Chiu Lau , Margaret L. Blohm , Wayne Charles Hasz , Nitin Bhate , Kripa Kiran Varanasi , Gregory Allen O'Neil
IPC分类号： C23C26/00 , C23C26/02 , C23C30/00
CPC分类号： B05D5/083 , B05D1/60 , C23C24/08 , C23C24/10
摘要： The present invention provides methods for manufacturing an article having a wetting-resistant surface. The method includes providing a substrate. The method further includes disposing a coating mixture on a surface of the substrate, wherein the coating mixture comprises a braze material and a texture-providing material. The method further includes heating the braze material to bond the texture-providing material to the surface of the substrate to form the article having the wetting-resistant surface.
摘要翻译：本发明提供了具有耐湿表面的制品的制造方法。该方法包括提供基板。该方法还包括将涂料混合物设置在基材的表面上，其中涂料混合物包括钎焊材料和提供纹理的材料。该方法还包括加热钎焊材料以将纹理提供材料粘合到基底的表面以形成具有耐湿表面的制品。

6. 发明授权

US07784667B2 Apparatus and method for friction stir welding using a consumable pin tool 有权
标题翻译：使用消耗性销钉工具进行摩擦搅拌焊接的装置和方法
公开(公告)号：US07784667B2
公开(公告)日：2010-08-31
申请号：US11386998
申请日：2006-03-23
申请人： Pazhayannur Ramanathan Subramanian , Earl Claude Helder , Timothy Joseph Trapp
发明人： Pazhayannur Ramanathan Subramanian , Earl Claude Helder , Timothy Joseph Trapp
IPC分类号： B23K20/12
CPC分类号： B23K20/125 , B23K20/1215 , B23K20/1255 , B23K20/128
摘要： The present invention provides a friction stir welding apparatus operable for welding one or more metals, metal alloys, or other materials, and a method for friction stir welding. The friction stir welding apparatus includes a pin tool holder, a shoulder having a surface coupled to the pin tool holder, and a pin tool coupled to the pin tool holder, the pin tool at least partially protruding from the surface of the shoulder, wherein the pin tool is made of a consumable pin tool material. The method includes introducing the pin tool into a workpiece; traversing the pin tool along a joint to be welded on the workpiece; and substantially continuously feeding the pin tool into the weld joint as it is traversed along the joint, thereby incorporating at least a portion of the consumable pin tool material into the volume of the joint to be welded.
摘要翻译：本发明提供了可操作用于焊接一种或多种金属，金属合金或其它材料的摩擦搅拌焊接装置，以及用于摩擦搅拌焊接的方法。摩擦搅拌焊接装置包括销工具保持器，具有联接到销工具保持器的表面的肩部和联接到销工具保持器的销工具，销工具至少部分地从肩部的表面突出，其中，销钉工具由消耗性销钉工具材料制成。该方法包括将销工具引入工件; 沿着要焊接在工件上的接头穿过销钉工具; 并且当所述销工具沿着所述接头穿过时，将所述销工具基本上连续地供给到所述焊接接头中，从而将所述可消耗的销工具材料的至少一部分结合到待焊接的接头的体积中。

7. 发明申请

US20080145528A1 METHODS OF PREPARING WETTING-RESISTANT SURFACES AND ARTICLES INCORPORATING THE SAME 失效
标题翻译：制备耐湿表面的方法和合成其的制品
公开(公告)号：US20080145528A1
公开(公告)日：2008-06-19
申请号：US11610542
申请日：2006-12-14
申请人： Tao Deng , Pazhayannur Ramanathan Subramanian , Ming Feng Hsu , Yuk-Chiu Lau , Margaret L. Blohm , Wayne Charles Hasz , Nitin Bhate , Kripa Kiran Varanasi , Gregory Allen O'Neil
发明人： Tao Deng , Pazhayannur Ramanathan Subramanian , Ming Feng Hsu , Yuk-Chiu Lau , Margaret L. Blohm , Wayne Charles Hasz , Nitin Bhate , Kripa Kiran Varanasi , Gregory Allen O'Neil
IPC分类号： B05D3/02 , B64C1/00
CPC分类号： B05D5/083 , B05D1/60 , C23C24/08 , C23C24/10
摘要： The present invention provides methods for manufacturing an article having a wetting-resistant surface. The method includes providing a substrate. The method further includes disposing a coating mixture on a surface of the substrate, wherein the coating mixture comprises a braze material and a texture-providing material. The method further includes heating the braze material to bond the texture-providing material to the surface of the substrate to form the article having the wetting-resistant surface.
摘要翻译：本发明提供了具有耐湿表面的制品的制造方法。该方法包括提供基板。该方法还包括将涂料混合物设置在基材的表面上，其中涂料混合物包含钎焊材料和提供纹理的材料。该方法还包括加热钎焊材料以将纹理提供材料粘合到基底的表面以形成具有耐湿表面的制品。

8. 发明申请

US20080142122A1 NIOBIUM-SILICIDE ALLOYS HAVING A SURFACE REGION OF ENHANCED ENVIRONMENTAL-RESISTANCE, AND RELATED ARTICLES AND PROCESSES 审中-公开
标题翻译：具有增强环境电阻表面区域的氧化硅合金及相关文章和工艺
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。

9. 发明申请

US20080099533A1 METHOD FOR CONTROLLING MICROSTRUCTURE VIA THERMALLY MANAGED SOLID STATE JOINING 审中-公开
标题翻译：通过热管理固态加工来控制微结构的方法
公开(公告)号：US20080099533A1
公开(公告)日：2008-05-01
申请号：US11554751
申请日：2006-10-31
申请人： Timothy Hanlon , Pazhayannur Ramanathan Subramanian , Earl Claude Helder , Timothy Joseph Trapp
发明人： Timothy Hanlon , Pazhayannur Ramanathan Subramanian , Earl Claude Helder , Timothy Joseph Trapp
IPC分类号： B23K20/12
CPC分类号： B23K20/122 , B23K20/126 , B23K37/06 , B29C65/0681 , B29C65/08 , B29C65/1425 , B29C65/16 , B29C65/18 , B29C65/224 , B29C65/26 , B29C66/0242 , B29C66/034 , B29C66/1142 , B29C66/343 , B29C66/43 , B29C66/73921 , B29C66/8122 , B29C66/81264 , B29C66/81429 , B29C66/8167 , B29C66/836 , B29C66/91212 , B29C66/91216 , B29C66/91221 , B29C66/91411 , B29C66/91421 , B29C66/91645 , B29C66/91935 , B29C66/961 , B29K2101/12 , B29K2905/12
摘要： A method for creating a solid state joint is disclosed. The method includes providing an adjoining apparatus that includes a pin tool, a backing plate and a thermal control plate disposed below the backing plate. The method also includes rotating the pin tool and traversing the pin tool relative to a workpiece along a joint to be welded on the workpiece. The method further includes manipulating the temperature of the pin tool and the backing plate in order to control the temperature and rate of change of temperature experienced by the workpiece at a weld affected zone at the joint. The method also includes maintaining a user chosen temperature differential between the weld affected zone and the backing plate via the thermal control plate.
摘要翻译：公开了一种用于形成固态接头的方法。该方法包括提供邻近的装置，其包括销工具，背板和设置在背板下方的热控制板。该方法还包括使针工具旋转并沿着要焊接在工件上的接头相对于工件横穿销钉工具。该方法还包括操纵销工具和背板的温度，以便控制工件在接头处的焊接影响区域经历的温度和温度变化率。该方法还包括通过热控制板维持用户在焊接受影响区域和背板之间选择的温度差。

10. 发明授权

US08323728B2 Magnetic laminated structure and method of making 失效
标题翻译：磁性层压结构及制作方法
公开(公告)号：US08323728B2
公开(公告)日：2012-12-04
申请号：US13017416
申请日：2011-01-31
申请人： Luana Emiliana Iorio , Pazhayannur Ramanathan Subramanian
发明人： Luana Emiliana Iorio , Pazhayannur Ramanathan Subramanian
IPC分类号： B05D5/12
CPC分类号： C23C28/324 , C23C28/345 , C23C28/3455 , C23C28/42 , G11B5/85 , H01F10/08 , H01F41/14 , H01F41/22 , H01F41/32 , Y10T428/325
摘要： A method for making an article comprising a multilayered structure comprising a series of magnetic layers is provided. The method includes providing a substrate and depositing a series of magnetic layers on the substrate and disposing insulating layers between successive magnetic layers. Each magnetic layer has a thickness of at least about 2 micrometers and magnetic material has an average grain size less than 200 nm.
摘要翻译：提供一种制造包括包含一系列磁性层的多层结构的制品的方法。该方法包括提供衬底并在衬底上沉积一系列磁性层并在连续的磁性层之间设置绝缘层。每个磁性层具有至少约2微米的厚度，并且磁性材料具有小于200nm的平均粒度。

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