-
公开(公告)号：US5284698A
公开(公告)日：1994-02-08
申请号：US761581
申请日：1991-09-18
IPC分类号： B32B18/00 , C04B35/486
CPC分类号： C04B35/486 , Y10T428/24942 , Y10T428/24975
摘要： In a Ce-ZrO.sub.2 -based laminar composite having enhanced fracture toughness, alternating barrier layers comprise a ceramic material that undergoes stress-induced phase transformation, if any, less readily than Ce-ZrO.sub.2. Separation of the barrier layers is normally in the range of about 10-200 .mu.m, with optimum individual barrier layer thicknesses at the lower end of the range. Powders of ceramic materials comprising the individual layers of the composite are dispersed in separate slurries. The pH of the slurries is adjusted to form coagulations in which the particles settle without mass segregation and can be consolidated to high density by centrifuging. After centrifuging, the supernatant liquid can be removed and a desired volume of another slurry can be added on top of the first layer of consolidated material. This process can be repeated indefinitely to form a consolidated structure having individual layers as thin as approximately 10 .mu.m. The consolidated structure may be pressed, shaped, dried, and sintered to form the laminar composite. In the composite, interactions between a barrier layer and the martensitic transformation zone surrounding a crack or indentation spread the transformation zone along the region adjacent to the barrier layer. As a result, barrier layers provide large increases in toughness for cracks growing parallel or normal to the layers.
摘要翻译： 在具有增强的断裂韧性的Ce-ZrO 2基层状复合材料中，交替的阻挡层包括如Ce-ZrO 2那样容易发生应力诱导相变的陶瓷材料。 阻隔层的分离通常在约10-200（m）m的范围内，其最佳单个阻挡层厚度在该范围的较低端。 包含复合材料的各层的陶瓷材料的粉末分散在不同的浆料中。 调节浆料的pH以形成凝结物，其中颗粒沉降而没有物质偏析，并且可以通过离心固化成高密度。 离心后，可以除去上清液，并且可以在第一层固结材料的顶部加入所需体积的另一浆料。 该过程可以无限期地重复以形成具有薄至约10（m）m的单独层的固结结构。 固结结构可以被压制，成型，干燥和烧结以形成层状复合材料。 在复合材料中，阻挡层与包围裂纹或压痕的马氏体相变区之间的相互作用使得沿着与阻挡层相邻的区域扩展转变区。 结果，阻挡层对于平行或垂直于层的裂纹的韧性提供了大的增加。
-
2.发明授权
公开(公告)号：US4879537A
公开(公告)日：1989-11-07
申请号：US223591
申请日：1988-07-25
IPC分类号： F16C39/06
CPC分类号： F16C32/0438
摘要： A device is provided for suspending an external load by means of a magnetic field and a superconductor. The superconductor is supported in a magnetic field which penetrates the superconductor. A magnet is suspended below the superconductor and oriented so that its magnetic moment is aligned parallel to the magnetic field. The magnet is provided with a coupling means so that it can be coupled to an external load. Either a vertical or a horizontal magnetic field can be used. In one embodiment, the load-carrying member is a composite material suspended from a supported magnet. The composite consists of a superconducting phase and an attractive phase comprising either a magnet, a ferromagnetic material, or a paramagnetic material. In another embodiment, a device for concentrating flux is provided by placing a superconductor between the source of the magnetic field and the position in which the concentrated flux is desired.
摘要翻译： 提供了一种通过磁场和超导体来悬挂外部负载的装置。 超导体被支撑在穿过超导体的磁场中。 将磁铁悬挂在超导体的下面并定向成使其磁矩平行于磁场排列。 磁体设置有联接装置，使得其可以耦合到外部负载。 可以使用垂直或水平磁场。 在一个实施例中，承载构件是从支撑的磁体悬挂的复合材料。 复合材料由超导相和吸引相组成，包括磁体，铁磁材料或顺磁材料。 在另一个实施例中，通过将超导体放置在磁场源和期望浓缩通量的位置之间来提供用于集中磁通的装置。
-
公开(公告)号：US5379018A
公开(公告)日：1995-01-03
申请号：US727763
申请日：1991-07-10
申请人： Roger E. De Wames , Ira B. Goldberg , Peter E. D. Morgan , Joseph J. Ratto , David B. Marshall , William F. Hall
发明人： Roger E. De Wames , Ira B. Goldberg , Peter E. D. Morgan , Joseph J. Ratto , David B. Marshall , William F. Hall
CPC分类号： H01P1/215
摘要： A magnetic switch for recording the change in position of a magnetic field includes a first object on which is positioned a source of magnetic force for creating a magnetic field and a second object on which is positioned at least one type II superconducting medium. The type II superconducting medium exhibits a permanent magnetic component after exposure to a magnetic field, such that relative motion between the first object and the second object causes the magnetic field to induce a residual magnetization in the superconducting medium. A device for sensing the direction of a magnetic field includes a first type II superconducting medium adapted to exhibit a permanent magnetic component after exposure to a magnetic field having a first direction, a second type II superconducting medium adapted to exhibit a permanent magnetic component after exposure to a magnetic field having a second direction orthogonal to the first direction, and a third type II superconducting medium adapted to exhibit a permanent magnetic component after exposure to a magnetic field having a third direction orthogonal to the first and second directions.
摘要翻译： 用于记录磁场位置变化的磁开关包括：第一物体，其上定位有用于产生磁场的磁力源，第二物体上定位有至少一个II型超导介质。 II型超导介质在暴露于磁场之后表现出永久磁性成分，使得第一物体和第二物体之间的相对运动导致磁场在超导介质中引起剩余磁化。 用于感测磁场方向的装置包括适于在暴露于具有第一方向的磁场之后呈现永磁部件的第一II型超导介质，适于在曝光之后呈现永磁部件的第二II型超导介质 涉及具有与第一方向正交的第二方向的磁场，以及适于在暴露于具有与第一和第二方向正交的第三方向的磁场之后呈现永磁部件的第三类型II超导介质。
-
公开(公告)号：US5113164A
公开(公告)日：1992-05-12
申请号：US303708
申请日：1989-01-27
申请人： Roger E. De Wames , Ira B. Goldberg , Peter E. D. Morgan , Joseph J. Ratto , David B. Marshall , William F. Hall
发明人： Roger E. De Wames , Ira B. Goldberg , Peter E. D. Morgan , Joseph J. Ratto , David B. Marshall , William F. Hall
CPC分类号： H01P1/215
摘要： A tunable electromagnetic filter includes a type II superconducting medium which exhibits a permanent ferromagnetic component after exposure to a magnetic field. A magnetic field passes through the medium in a first direction, while an input conductor wound around the medium in a second direction perpendicular to the first direction receives an input signal, and an output conductor is wound around the medium in a third direction perpendicular to the first and second directions. At resonance of the medium, an alternating field magnetic component perpendicular to both the incoming signal and the magnetic field is created to induce a current of the resonant frequency in the output conductor.
摘要翻译： 可调电磁滤波器包括II型超导介质，其在暴露于磁场之后呈现永久的铁磁性部件。 磁场沿着第一方向穿过介质，而沿垂直于第一方向的第二方向缠绕在介质上的输入导体接收输入信号，并且输出导体在垂直于第一方向的第三方向上缠绕在介质周围 第一和第二个方向。 在介质共振时，产生垂直于入射信号和磁场的交变场磁分量，以在输出导体中感应出谐振频率的电流。
-
公开(公告)号：US5092948A
公开(公告)日：1992-03-03
申请号：US292756
申请日：1989-01-03
CPC分类号： B32B18/00 , C04B35/63408 , C04B35/63452 , C04B35/6346 , C04B35/63468 , C04B35/645 , C04B35/80 , C04B2235/5224 , C04B2235/5236 , C04B2235/5244 , C04B2235/5248 , C04B2235/6567 , C04B2235/6581 , C04B2237/04 , C04B2237/062 , C04B2237/064 , C04B2237/068 , C04B2237/08 , C04B2237/083 , C04B2237/10 , C04B2237/12 , C04B2237/121 , C04B2237/122 , C04B2237/123 , C04B2237/124 , C04B2237/34 , C04B2237/341 , C04B2237/343 , C04B2237/346 , C04B2237/348 , C04B2237/36 , C04B2237/363 , C04B2237/365 , C04B2237/368 , C04B2237/38 , C04B2237/704 , Y10S428/902
摘要： The present invention relates to an article having improved physical properties as compared to the individual components, which article comprises:a laminated ceramic fiber composite of alternating layers of discrete thin solid sheets of ceramic A having a substantially large upper and lower surface bonded to discrete thin sheets B comprising fibers and having large upper and lower surfaces using a suitable bonding agent. A method is disclosed to produce as laminated fiber-ceramic composite, which comprises:(a) obtaining discrete preformed thin solid sheets of ceramic A having a substantially large upper and lower surface and thin edge surfaces:(b) obtaining discrete preformed thin solid sheets B comprising a fiber having large upper and lower surfaces and thin edge surface, wherein the sheet of fibers are either obtained in a matrix of a suitable bonding agent, or a suitable bonding agent is added in amounts effective to bond to the upper and lower surface of the ceramic sheet and to the upper and lower surface of the sheet of fiber;(c) alternately layering at least two ceramic sheets of step (a) with at least one fiber sheet of step (b) having a minimum A-B-A pattern or in a repeating A-B pattern optionally terminating in a ceramic sheet A; and(d) bonding the laminated sheets of step (c) producing an alternating laminar fiber reinforced ceramic composite. These laminated fiber ceramics are useful in situations involving high impact loads.
摘要翻译： 本发明涉及一种与单个组分相比具有改善的物理性能的制品，该制品包括：具有基本上大的上表面和下表面的离散薄固体片的交替层的层叠陶瓷纤维复合材料， 包含纤维的片材B，并且使用合适的粘合剂具有大的上表面和下表面。 公开了一种生产作为层压纤维 - 陶瓷复合材料的方法，其包括：（a）获得具有基本上大的上表面和下表面以及薄边缘表面的不连续的预成型的陶瓷A的薄固体片;（b）获得不连续的预成型薄固体片 B包括具有大的上表面和下表面以及薄边缘表面的纤维，其中所述纤维片材以适当的粘合剂的基质获得，或者合适的粘合剂以有效粘合到上表面和下表面的量加入 的陶瓷片和纤维片的上下表面; （c）将具有至少一个具有最小A-B-A图案的步骤（b）的至少一个纤维片或任选终止于陶瓷片A的重复A-B图案交替地层叠至少两个步骤（a）的陶瓷片; 和（d）粘合制备交替层状纤维增强陶瓷复合材料的步骤（c）的层压片材。 这些层压纤维陶瓷在涉及高冲击载荷的情况下是有用的。
-
公开(公告)号：US20100329880A1
公开(公告)日：2010-12-30
申请号：US12650172
申请日：2009-12-30
CPC分类号： B29D99/0025 , B64C27/473 , B64C2027/4736
摘要： A protective hybrid composite for a rotor blade is based on the use of tape cast ceramic layers densified by pre-ceramic polymer infiltration methods and laminated together with polymer matrix composite prepregs, with or without an embedded metallic mesh, to form a conforming helicopter blade cladding that is laminated to the blade surface for added erosion protection. The hybrid composite is fabricated to net shape and laminated to the blade using either an adhesive or a polymer composite prepreg inner layer. Installation is accomplished by a standard composite fabrication method of vacuum bagging the blade while the system is laminated to its surface. Repair methods based on removal of ceramic tiles is facilitated by incorporation of a metallic mesh element laminated beneath the ceramic tiles that can be used to heat the tile and decrease its adhesion strength.
摘要翻译： 用于转子叶片的保护性混合复合材料基于使用通过预陶瓷聚合物渗透方法致密化的带状陶瓷层，并与具有或不具有嵌入金属网的聚合物基质复合预浸料层压在一起以形成一致的直升机叶片覆层 层压到叶片表面以增加侵蚀保护。 将混合复合材料制成网状，并使用粘合剂或聚合物复合预浸料内层层压到叶片上。 安装是通过在将系统层压到其表面上的真空袋装刀片的标准复合制造方法来实现的。 基于去除瓷砖的修复方法通过结合层压在陶瓷砖下方的金属网状元件而得以促进，其可用于加热瓷砖并降低其粘合强度。
-
公开(公告)号：US20100081350A1
公开(公告)日：2010-04-01
申请号：US12286660
申请日：2008-09-30
申请人： Brock S. McCabe , David B. Marshall
发明人： Brock S. McCabe , David B. Marshall
CPC分类号： C04B35/62873 , C04B35/565 , C04B35/62868 , C04B35/62881 , C04B35/803 , C04B35/806 , C04B2235/5224 , C04B2235/5228 , C04B2235/5244 , C04B2235/5248 , C04B2235/5256 , C04B2235/5272 , C04B2235/5276 , C04B2235/614 , C04B2235/616 , Y10T442/2557 , Y10T442/2975 , Y10T442/2984
摘要： A method of making a smooth surfaced, fiber reinforced ceramic matrix composite includes the steps of providing a fiber preform, the preform having a surface containing voids; placing fibers into the voids; coating the preform fibers and the void fibers with a coating material to create a weak interface; and infiltrating the coated fibers with a matrix material to infill the voids and preform, and form strongly bonded networks within the voids. Alternatively, the resulting smooth surfaced, fiber reinforced ceramic matrix composite may include, in addition to the first coating material on the preform fibers and the void fibers and the matrix material within the coated fibers and the preform to infill the voids and preform, a second coating material on the preform fibers and the void fibers, creating a second coating of substantially uniform thickness on the fibers and forming strongly bonded networks within the voids.
摘要翻译： 一种制备光滑表面的纤维增强陶瓷基质复合材料的方法包括提供纤维预制件的步骤，该预型件具有包含空隙的表面; 将纤维放入空隙中; 用涂层材料涂覆预成型纤维和空隙纤维以产生弱界面; 并用基质材料渗透涂覆的纤维以填充空隙和预制件，并在空隙内形成牢固粘合的网络。 或者，所得到的光滑表面的纤维增强陶瓷基质复合材料除了预成型件上的第一涂层材料和空心纤维之外，还可以包括涂覆的纤维内的基体材料和预制件以填充空隙和预制件， 在预成型纤维和空隙纤维上涂覆材料，在纤维上产生基本上均匀厚度的第二涂层，并在空隙内形成牢固粘合的网络。
-
公开(公告)号：US06758386B2
公开(公告)日：2004-07-06
申请号：US09954753
申请日：2001-09-18
申请人： David B. Marshall , Min Z Berbon , John R. Porter
发明人： David B. Marshall , Min Z Berbon , John R. Porter
IPC分类号： B23K3102
CPC分类号： F16L25/0072 , Y10T428/249928
摘要： A method of joining a ceramic matrix composite rocket nozzle to a metal manifold is provided, wherein a silicon nitride insert is disposed inside the ceramic matrix composite rocket nozzle and the metal manifold to provide a joint therebetween. The silicon nitride insert is preferably co-processed with the ceramic matrix composite rocket nozzle such that the ceramic matrix provides a bond between the rocket nozzle and the insert. The metal manifold is then secured to the silicon nitride insert, preferably using brazing, to form a joint assembly.
摘要翻译： 提供了一种将陶瓷基复合火箭喷嘴接合到金属歧管的方法，其中在陶瓷基体复合火箭喷嘴和金属歧管内部设置有氮化硅插入件以在其间提供接合。 氮化硅插入件优选与陶瓷基体复合火箭喷嘴共同处理，使得陶瓷基体在火箭喷嘴和插入件之间提供接合。 然后将金属歧管固定到氮化硅插入件，优选使用钎焊，以形成接头组件。
-
9.发明授权Use of monazite or xenotime solution precursors to increase the density and shear strength of oxide composites 有权使用独居石或堇青石溶液前体来增加氧化物复合材料的密度和剪切强度公开(公告)号：US08758908B2
公开(公告)日：2014-06-24
申请号：US12044336
申请日：2008-03-07
CPC分类号： C04B41/4596 , C04B35/447 , C04B35/62881 , C04B35/803 , C04B41/87 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/443 , C04B2235/447 , C04B2235/5224 , C04B2235/5445 , C04B2235/616
摘要： Aqueous precursor solutions are described that comprise at least one monazite-based material precursor, at least one xenotime-based material precursor or a combination thereof; and a plurality of fine suspended particles of an oxide material. Contemplated oxide composites, as described herein, comprise a plurality of fibers surrounded by at least one monazite or xenotime-based material, wherein the oxide composite has nearly a fully dense matrix. Contemplated embodiments disclosed herein provides a method for producing an oxide composite with nearly fully dense matrix and with all fibers surrounded by a monazite- or xenotime-based material that prevents embrittlement at temperatures at least as high as 1200° C. Oxide composites are described that contain a plurality of fibers, a matrix containing at least one or more oxide materials, and at least one monazite-based material, xenotime-based material or combination thereof, wherein the monazite-based or xenotime-based material is formed from the aqueous precursor solutions disclosed herein. Contemplated methods of production include: a) providing a composite comprising oxide-reinforcing fibers and a porous matrix of oxide materials, and b) infiltrating the porosity in the matrix with a solution that contains precursors for at least one monazite-based material, at least one xenotime-based material or a combination thereof; and c) heat treating the composite to convert the precursors to monazite, xenotime, or combinations thereof.
摘要翻译： 描述了包含至少一种独居石基材料前体，至少一种基于堇青石的材料前体或其组合的水性前体溶液; 和多个细小的氧化物悬浮颗粒。 如本文所述，沉积的氧化物复合材料包含被至少一种独居石或基于堇青石的材料包围的多个纤维，其中氧化物复合材料具有几乎完全致密的基质。 本文公开的考虑的实施例提供了一种用于生产具有几乎完全致密的基质的氧化物复合材料的方法，并且所有的纤维都被独立铁矿或堇青石基材料包围，以防止在至少高达1200℃的温度下的脆化。氧化物复合材料被描述为 含有多个纤维，含有至少一种或多种氧化物材料的基质，以及至少一种独居石类材料，堇青石类材料或其组合，其中所述独居石类或堇青石类材料由水性前体形成 本文公开的解决方案。 考虑的生产方法包括：a）提供包含氧化物增强纤维和氧化物材料的多孔基质的复合材料，以及b）用包含至少一种独居石基材料的前体的溶液渗透到基体中的孔隙，至少 一种基于脱乙酸铁基的材料或其组合; 和c）热处理复合材料以将前体转化为独居石，堇青石或其组合。
-
10.发明申请USE OF MONAZITE OR XENOTIME SOLUTION PRECURSORS TO INCREASE THE DENSITY AND SHEAR STRENGTH OF OXIDE COMPOSITES 有权使用MONAZITE或XENOTIME解决方案前提物提高氧化复合材料的密度和剪切强度公开(公告)号：US20140065292A1
公开(公告)日：2014-03-06
申请号：US12044336
申请日：2008-03-07
CPC分类号： C04B41/4596 , C04B35/447 , C04B35/62881 , C04B35/803 , C04B41/87 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/443 , C04B2235/447 , C04B2235/5224 , C04B2235/5445 , C04B2235/616
摘要： Aqueous precursor solutions are described that comprise at least one monazite-based material precursor, at least one xenotime-based material precursor or a combination thereof; and a plurality of fine suspended particles of an oxide material. Contemplated oxide composites, as described herein, comprise a plurality of fibers surrounded by at least one monazite or xenotime-based material, wherein the oxide composite has nearly a fully dense matrix. Contemplated embodiments disclosed herein provides a method for producing an oxide composite with nearly fully dense matrix and with all fibers surrounded by a monazite- or xenotime-based material that prevents embrittlement at temperatures at least as high as 1200° C. Oxide composites are described that contain a plurality of fibers, a matrix containing at least one or more oxide materials, and at least one monazite-based material, xenotime-based material or combination thereof, wherein the monazite-based or xenotime-based material is formed from the aqueous precursor solutions disclosed herein. Contemplated methods of production include: a) providing a composite comprising oxide-reinforcing fibers and a porous matrix of oxide materials, and b) infiltrating the porosity in the matrix with a solution that contains precursors for at least one monazite-based material, at least one xenotime-based material or a combination thereof; and c) heat treating the composite to convert the precursors to monazite, xenotime, or combinations thereof.
摘要翻译： 描述了包含至少一种独居石基材料前体，至少一种基于堇青石的材料前体或其组合的水性前体溶液; 和多个细小的氧化物悬浮颗粒。 如本文所述，沉积的氧化物复合材料包含被至少一种独居石或基于堇青石的材料包围的多个纤维，其中氧化物复合材料具有几乎完全致密的基质。 本文公开的考虑的实施例提供了一种用于生产具有几乎完全致密的基质的氧化物复合材料的方法，并且所有的纤维都被独立铁矿或堇青石基材料包围，以防止在至少高达1200℃的温度下的脆化。氧化物复合材料被描述为 含有多个纤维，含有至少一种或多种氧化物材料的基质，以及至少一种独居石类材料，堇青石类材料或其组合，其中所述独居石类或堇青石类材料由水性前体形成 本文公开的解决方案。 考虑的生产方法包括：a）提供包含氧化物增强纤维和氧化物材料的多孔基质的复合材料，以及b）用包含至少一种独居石基材料的前体的溶液渗透到基体中的孔隙，至少 一种基于脱乙酸铁基的材料或其组合; 和c）热处理复合材料以将前体转化为独居石，堇青石或其组合。
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.02 秒)
