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91.发明授权Rare earth-based core constructions for casting refractory metal composites, and related processes 有权用于铸造难熔金属复合材料的稀土基核心结构及相关工艺公开(公告)号：US07610945B2
公开(公告)日：2009-11-03
申请号：US11540737
申请日：2006-09-29
摘要： A method of fabricating a core for a ceramic shell mold is disclosed. A porous core body is formed from at least about 50% by weight of at least one rare earth metal oxide. The core body is heated under heating conditions sufficient to provide the core with a density of about 35% to about 80% of its theoretical density. The core body is then infiltrated with a liquid colloid or solution of at least one metal oxide compound, e.g., rare earth metal oxides; silica, aluminum oxide, transition metal oxides, and combinations thereof. The infiltrated core body is then heated to sinter the particles without substantially changing the dimensions of the core body. Mold-core assemblies which include such a core body are also described. A description of processes for casting a turbine component, using the core, is also set forth herein.
摘要翻译： 公开了一种制造用于陶瓷壳模的芯的方法。 多孔芯体由至少约50重量％的至少一种稀土金属氧化物形成。 芯体在足以提供核心的密度为其理论密度的约35％至约80％的加热条件下加热。 然后将芯体用至少一种金属氧化物化合物例如稀土金属氧化物的液体胶体或溶液渗透; 二氧化硅，氧化铝，过渡金属氧化物及其组合。 然后将渗透的芯体加热以烧结颗粒，而基本上不改变芯体的尺寸。 还描述了包括这种芯体的模芯组件。 本文还阐述了使用该芯铸造涡轮机部件的方法。
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92.发明授权Apparatus for incorporating a gaseous elemental component into a molten metal, and related articles, processes, and compositions 有权用于将气态元素组分并入熔融金属的装置，以及相关的制品，工艺和组合物公开(公告)号：US07497986B2
公开(公告)日：2009-03-03
申请号：US10932128
申请日：2004-09-01
IPC分类号： C23C8/24
CPC分类号： C22C27/02 , B22F2998/00 , C22C1/053 , C22C1/1036 , C22C29/18 , C22C32/0078 , F01D5/28 , F01D25/005 , F05C2201/90 , F27B14/04 , F27B14/063 , F27B14/14 , F27D9/00 , Y02P10/253 , Y02T50/672 , B22F5/04 , B22F5/009
摘要： An apparatus for incorporating an elemental component in gaseous form into a molten metal is described. The apparatus comprises a container for holding the molten metal; means for cooling the container; heating means for maintaining the metal in the molten state; and a canopy which covers the top of the container. The apparatus also includes at least one aperture through which a desired gaseous material can be fed from a gas source. A related method for incorporating an elemental component in gaseous form into a molten metal is also described. The method includes the step of providing the metal in a container apparatus as described above, and feeding the gaseous elemental component from a gas source into the container, while maintaining the metal in the molten state. Articles prepared by such a method are also disclosed, as well as niobium base composites which comprise niobium, silicon, and nitrogen.
摘要翻译： 描述了将气态元素组分并入熔融金属中的装置。 该装置包括用于保持熔融金属的容器; 用于冷却容器的装置; 用于将金属保持在熔融状态的加热装置; 和覆盖容器顶部的顶盖。 该装置还包括至少一个孔，通过该孔可从气体源供给所需的气态物质。 还描述了将气态元素组分并入熔融金属中的相关方法。 该方法包括如下步骤：在如上所述的容器装置中提供金属，并将气态元素组分从气体源供给到容器中，同时保持金属处于熔融状态。 还公开了通过这种方法制备的制品，以及包含铌，硅和氮的铌基复合材料。
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93.发明授权Ceramic lamp having shielded niobium end cap and systems and methods therewith 失效具有屏蔽铌端盖的陶瓷灯及其系统及方法公开(公告)号：US07432657B2
公开(公告)日：2008-10-07
申请号：US11172651
申请日：2005-06-30
申请人： Bernard Patrick Bewlay , Bruce Alan Knudsen , Alan George Chalmers , Mohamed Rahmane , James Scott Vartuli
发明人： Bernard Patrick Bewlay , Bruce Alan Knudsen , Alan George Chalmers , Mohamed Rahmane , James Scott Vartuli
CPC分类号： H01J61/82 , H01J9/247 , H01J61/36 , H01J61/363
摘要： A lamp comprising an arc envelope and a niobium end structure coupled to the arc envelope, and wherein the end structure is shielded from a dosing material disposed within the arc envelope.
摘要翻译： 一种灯，包括耦合到所述电弧外壳的电弧外壳和铌端部结构，并且其中所述端部结构与设置在所述电弧外壳内的配量材料屏蔽。
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公开(公告)号：US20080185963A1
公开(公告)日：2008-08-07
申请号：US11702319
申请日：2007-02-05
申请人： Bernard Patrick Bewlay , Dennis Joseph Dalpe , Bruce Alan Knudsen , Mohamed Rahmane , Svetlana Selezneva , James Scott Vartuli , James Anthony Brewer
发明人： Bernard Patrick Bewlay , Dennis Joseph Dalpe , Bruce Alan Knudsen , Mohamed Rahmane , Svetlana Selezneva , James Scott Vartuli , James Anthony Brewer
IPC分类号： H01J61/30
CPC分类号： H01J61/363
摘要： A lamp is provided with an axially and radially graded structure to reduce the possibility of thermal stresses, cracks, and other defects in the lamp. In one embodiment, a system includes a ceramic lamp having a ceramic arc envelope and an end structure coupled to the ceramic arc envelope, wherein the end structure is graded both axially and radially into a plurality of regions. In another embodiment, a system includes a lamp having a layered end structure with a plurality of layers disposed one over another and that extend in both axial and radial directions relative to an axis of the lamp, wherein the plurality of layers include different materials having different coefficients of thermal expansion, Poisson's ratios, or elastic moduli, or a combination thereof,.
摘要翻译： 灯具设置有轴向和径向渐变的结构，以减少灯的热应力，裂纹和其他缺陷的可能性。 在一个实施例中，系统包括具有陶瓷电弧外壳和耦合到陶瓷电弧外壳的端部结构的陶瓷灯，其中端部结构沿轴向和径向分级成多个区域。 在另一个实施例中，一种系统包括具有层叠端部结构的灯，其具有多个层，所述多个层彼此重叠设置并且相对于灯的轴线在轴向和径向方向上延伸，其中所述多个层包括具有不同材料的不同材料 热膨胀系数，泊松比或弹性模量，或其组合。
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95.发明申请Rare earth-based core constructions for casting refractory metal composites, and related processes 有权用于铸造难熔金属复合材料的稀土基核心结构及相关工艺公开(公告)号：US20080078520A1
公开(公告)日：2008-04-03
申请号：US11540737
申请日：2006-09-29
IPC分类号： B22C9/10
摘要： A method of fabricating a core for a ceramic shell mold is disclosed. A porous core body is formed from at least about 50% by weight of at least one rare earth metal oxide. The core body is heated under heating conditions sufficient to provide the core with a density of about 35% to about 80% of its theoretical density. The core body is then infiltrated with a liquid colloid or solution of at least one metal oxide compound, e.g., rare earth metal oxides; silica, aluminum oxide, transition metal oxides, and combinations thereof. The infiltrated core body is then heated to sinter the particles without substantially changing the dimensions of the core body. Mold-core assemblies which include such a core body are also described. A description of processes for casting a turbine component, using the core, is also set forth herein.
摘要翻译： 公开了一种制造用于陶瓷壳模的芯的方法。 多孔芯体由至少约50重量％的至少一种稀土金属氧化物形成。 芯体在足以提供核心的密度为其理论密度的约35％至约80％的加热条件下加热。 然后将芯体用至少一种金属氧化物化合物例如稀土金属氧化物的液体胶体或溶液渗透; 二氧化硅，氧化铝，过渡金属氧化物及其组合。 然后将渗透的芯体加热以烧结颗粒，而基本上不改变芯体的尺寸。 还描述了包括这种芯体的模芯组件。 本文还阐述了使用该芯铸造涡轮机部件的方法。
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公开(公告)号：US06913655B2
公开(公告)日：2005-07-05
申请号：US10263527
申请日：2002-10-03
CPC分类号： C22C29/18 , C22C27/02 , F01D5/28 , F05D2200/11 , Y02T50/672
摘要： A niobium-silicide refractory metal intermetallic composite adapted for use in a turbine component. The niobium-silicide refractory metal intermetallic composite comprises: between about 19 atomic percent and about 24 atomic percent titanium; between about 1 atomic percent and about 5 atomic percent hafnium; between about 16 atomic percent and about 22 atomic percent silicon; between about 7 atomic percent and about 14 atomic percent chromium; from about 1.5 atomic percent to about 3 atomic percent tin; and a balance of niobium. The niobium silicide refractory intermetallic composite contains a tetragonal phase, which comprises a volume fraction from 0.35 to 0.5 of the niobium silicide refractory intermetallic composite, and a hexagonal M3Si5 silicide phase (wherein M is at least one of Nb and Hf) which comprises a volume fraction comprises less than 0.25 of the niobium silicide refractory intermetallic composite. A ratio of the sum of atomic percentages of niobium and tantalum present in said niobium silicide refractory intermetallic composite to the sum of atomic percentages of titanium and of hafnium present in said niobium silicide refractory intermetallic composite has a value from 1.5 to 2.0.
摘要翻译： 适用于涡轮机部件的铌硅化物耐火金属金属间复合材料。 所述铌 - 硅化物难熔金属金属间复合物包括：约19原子％至约24原子％的钛; 约1原子％至约5原子％的铪; 介于约16原子％和约22原子％之间的硅; 约7原子％至约14原子％的铬; 从约1.5原子％至约3原子％的锡; 和铌的平衡。 所述铌硅化物难熔金属间复合材料包含四方相，其包含硅化铌耐火金属间复合材料的0.35至0.5的体积分数和六方晶系的N 3 Si 5 Si 5 Si 包括体积分数的相（其中M是Nb和Hf中的至少一种）包括小于0.25的硅化铌耐火金属间复合材料。 所述铌硅化物难熔金属间化合物中存在的铌和钽的原子百分比之和与存在于所述铌硅化物耐火金属间复合材料中的钛和铪的原子百分比之和的比值为1.5至2.0。
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公开(公告)号：US06464551B1
公开(公告)日：2002-10-15
申请号：US09583404
申请日：2000-05-31
IPC分类号： H01J904
摘要： A filament comprises a generally thin metal component, such as a sheet, ribbon, or foil. The filament comprises at least one emitter, at least one current-condensing structure and a tab on each end of the at least one emitter. Each tab is connectable to a support system, comprising for example a lead and attachment post. When a current is passed through the filament, the current-condensing structure establishes current flow through the filament resulting in a desired temperature distribution across the emitter, for example a substantially uniform temperature distribution. A predictive tool for determining a geometry of a filament to provide a desired temperature distribution is set forth. The filament may be curved, and methods and systems for providing a curved filament are also provided. Attachment systems are further disclosed for attaching an emitter to a support structure.
摘要翻译： 长丝包括通常薄的金属部件，例如片，带或箔。 灯丝包括至少一个发射器，至少一个电流冷凝结构和至少一个发射器的每个端部上的突出部。 每个标签可连接到支撑系统，包括例如引线和附接柱。 当电流通过灯丝时，电流冷凝结构建立通过灯丝的电流，导致跨过发射器的所需温度分布，例如基本均匀的温度分布。 阐述了用于确定细丝几何形状以提供所需温度分布的预测工具。 丝可以是弯曲的，并且还提供了用于提供弯曲细丝的方法和系统。 进一步公开了用于将发射器附接到支撑结构的附接系统。
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98.发明授权公开(公告)号：US06419765B1
公开(公告)日：2002-07-16
申请号：US09735769
申请日：2000-12-13
IPC分类号： C22C2702
摘要： A niobium-silicide refractory metal intermetallic composite having enhanced material characteristics, such as oxidation resistance, creep resistance, and toughness, and turbine components made therefrom. The composite comprises between about 14 atomic percent and about 26 atomic percent titanium; between about 1 atomic percent and about 4 atomic percent hafnium; up to about 6 atomic percent tantalum; between about 12 atomic percent and about 22 atomic percent silicon; up to about 5 atomic percent germanium; up to about 4 atomic percent boron; between about 7 atomic percent and about 14 atomic percent chromium; up to about 3 atomic percent iron; up to about 2 atomic percent aluminum; between about 1 atomic percent and about 3 atomic percent tin; up to about 2 atomic percent tungsten; up to about 2 atomic percent molybdenum; and a balance of niobium, wherein a ratio of a sum of atomic percentages of niobium and tantalum present in said niobium silicide refractory intermetallic composite to a sum of atomic percentages of titanium and hafnium present in said niobium silicide refractory intermetallic composite has a value between about 1.4 and about 2.2 (i.e.,1.4
摘要翻译： 具有提高材料特性如耐氧化性，抗蠕变性和韧性的铌 - 硅化物耐火金属金属间复合物和由其制成的涡轮部件。 复合材料包含约14原子％至约26原子％的钛; 约1原子％至约4原子％的铪; 高达约6原子％的钽; 约12原子％和约22原子％之间的硅; 高达约5原子％的锗; 高达约4原子％的硼; 约7原子％至约14原子％的铬; 高达约3原子％铁; 高达约2原子％的铝; 在约1原子％和约3原子％之间的锡; 高达约2原子％的钨; 高达约2原子％的钼; 和铌的余量，其中存在于所述铌硅化物难熔金属间复合材料中的铌和钽的原子百分比之和与存在于所述铌硅化物耐火金属间复合材料中的钛和铪的原子百分比之和的比值在约 1.4和约2.2（即1.4 <（Nb + Ta）：Ti + Hf）<2.2）。
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公开(公告)号：US06409848B1
公开(公告)日：2002-06-25
申请号：US09651574
申请日：2000-08-24
IPC分类号： C22C2702
CPC分类号： C22C27/02
摘要： A niobium-based silicide composite exhibiting creep resistance at temperatures equal to or greater than 1150° C. The niobium-based silicide composite comprises at least silicon (Si), hafnium (Hf), titanium (Ti), and niobium (Nb). A concentration ratio of Nb:(Hf+Ti) is equal to or greater than about 1.4. The niobium-based silicide composite exhibits a creep rate less than about 5×10−8s−1 at temperatures up to about 1200° C. and at a stress of about 200 MPa.
摘要翻译： 铌系硅化物复合体至少包含硅（Si），铪（Hf），钛（Ti）和铌（Nb）等，该铌系硅化物复合体在等于或大于1150℃的温度下具有抗蠕变性。 Nb：（Hf + Ti）的浓度比等于或大于约1.4。 铌基硅化物复合材料在高达约1200℃的温度和约200MPa的应力下表现出小于约5×10 -8 s -1的蠕变速率。
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100.发明授权Refining and analysis of material using horizontal cold-crucible induction levitation melting 失效使用水平冷坩埚诱导悬浮熔化的材料的精炼和分析公开(公告)号：US06210478B1
公开(公告)日：2001-04-03
申请号：US09346133
申请日：1999-07-09
IPC分类号： C30B1322
摘要： A method and apparatus for locally and successively melting a material by induction heating using a horizontal floating-zone crucible to refine and/or analyze the material. An electromagnetic field is generated to create a localized molten zone within the material that is at least partially levitated within the crucible. The crucible has an upper peripheral opening so that an upper portion of the molten zone is generally at a higher temperature than the lower portion of the molten zone adjacent the crucible wall. As a result, insoluble inclusions within the material separate and float to the upper portion of the molten zone. The molten zone may be translated longitudinally through the material to drive the inclusions toward one end of the material. The process can be carried out to refine or characterize the material, or to determine the solidus and liquidus temperatures of the material.
摘要翻译： 一种用于通过感应加热局部且连续地熔化材料的方法和装置，使用水平浮动区坩埚来精炼和/或分析材料。 产生电磁场以产生在坩埚内至少部分悬浮的材料内的局部熔融区。 坩埚具有上周边开口，使得熔融区的上部通常处于比邻近坩埚壁的熔融区的下部更高的温度。 结果，材料内的不溶性夹杂物分离并漂浮到熔融区的上部。 熔融区域可以纵向平移通过材料以朝向材料的一端驱动夹杂物。 该过程可以进行以细化或表征材料，或确定材料的固相和液相线温度。
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