-
公开(公告)号：US06960022B2
公开(公告)日：2005-11-01
申请号：US10616708
申请日：2003-07-10
申请人： David T. Beatson , E. Walter Frasch , Paul J. Schlosser , Jai R. Singh , David W. McKenna , Craig Emmons
发明人： David T. Beatson , E. Walter Frasch , Paul J. Schlosser , Jai R. Singh , David W. McKenna , Craig Emmons
CPC分类号： F16C29/005 , B23Q1/40 , B23Q1/42 , B23Q1/58 , F16C29/04 , F16C2322/39
摘要： A “hybrid” or macrocomposite guideway, wherein the “traditional” or existing guideway material (e.g., hardened steel) is maintained as the wear resistant, low friction surface intended to be in physical contact with one or more bearings, and further wherein this surface is backed up or supported by a substrate comprising a stiff, lightweight material. This macrocomposite guideway combines the desirable friction and wear characteristics of the traditional bearing materials with the stiffness and low mass of advanced materials. Candidate substrate materials include composites having a ceramic and/or a metallic matrix, monolithic ceramics or monolithic light metals. A cladding comprising the hardened steel wear surface layer may be attached to the rigid, lightweight substrate by adhesive bonding, mechanical fasteners or other mechanical fit such as a friction or interference fit. Preferably, though, the attachment is by means of a metallurgical bond. In a particularly preferred embodiment, a silicon carbide particulate reinforced aluminum composite is metallurgically bonded to a tool steel wear surface using an “active” soldering composition. A gib that utilizes such guideways is useful in machines requiring fast and precise movement of one pat relative to another, such as in machines for semiconductor chip fabrication and assembly.
摘要翻译： “混合”或大型复合导轨，其中“传统”或现有的导轨材料（例如，硬化钢）被保持为旨在与一个或多个轴承物理接触的耐磨低摩擦表面，并且其中该表面 由包括刚性轻质材料的基材支撑或支撑。 这种宏观复合导轨将传统轴承材料的理想摩擦和磨损特性与先进材料的刚度和质量相结合。 候选基板材料包括具有陶瓷和/或金属基体，单片陶瓷或单片轻金属的复合材料。 包含硬化的钢磨损表面层的包层可以通过粘合剂粘合，机械紧固件或其它机械配合（例如摩擦或过盈配合）附接到刚性轻质基底。 但是，优选地，附件是借助于冶金结合。 在特别优选的实施例中，碳化硅颗粒增强铝复合材料使用“主动”焊接组合物冶金地结合到工具钢耐磨表面。 使用这种导轨的双臂在需要相对于另一个拍拍的快速和精确移动的机器中是有用的，例如在用于半导体芯片制造和组装的机器中。
-
公开(公告)号：US06355340B1
公开(公告)日：2002-03-12
申请号：US09378367
申请日：1999-08-20
IPC分类号： B32B900
CPC分类号： C22C47/025 , B22F3/1103 , B22F2003/1106 , B22F2998/00 , B22F2999/00 , C22C47/08 , C22C49/14 , C22C2204/00 , H01L23/142 , H01L2924/0002 , H01L2924/09701 , Y10T428/249953 , Y10T428/249964 , Y10T428/249967 , Y10T428/24997 , B22F3/1112 , C22C47/04 , C22C47/06 , B22F2201/02 , B22F3/11 , B22F2201/013 , H01L2924/00
摘要： A low to near-zero metal matrix composite material featuring high modulus carbon fibers reinforcing a lightweight metal or semimetal. The fibers have a negative coefficient of thermal expansion in the axial direction. Laminates featuring parallel arrays of fibers may be cross-plied to produce quasi-isotropic properties in the composite body. The CTE of the composite body depends not only upon the relative CTE's of the fibers and matrix, and their relative amounts (e.g., loadings), but also upon the relative elastic moduli of the fibers and matrix. By intentionally introducing porosity into the matrix, the elastic modulus of the matrix is reduced, and thus the CTE of the composite body is influenced more by the CTE contribution of the fibers. In effect, the composite CTE is shifted toward that of the fibers, which shifting represents a reduction in composite CTE. Hydrogen outgassing upon solidification of the metallic matrix is one technique for producing such porosity.
摘要翻译： 一种低至接近零的金属基复合材料，具有高模量碳纤维，增强了轻质金属或半金属。 纤维在轴向上具有负的热膨胀系数。 具有平行的纤维阵列的层压板可以交叉层叠以在复合体中产生准各向同性的性质。 复合体的CTE不仅取决于纤维和基体的相对CTE以及它们的相对量（例如载荷），而且取决于纤维和基体的相对弹性模量。 通过有意地将孔隙率引入基体，基体的弹性模量降低，因此复合体的CTE受到纤维的CTE贡献的影响更大。 实际上，复合CTE向纤维的转移，这种转移代表了复合CTE的降低。 金属基体凝固时的氢气除气是产生这种孔隙率的一种技术。
-
公开(公告)号：US20090011211A1
公开(公告)日：2009-01-08
申请号：US12074703
申请日：2008-03-05
CPC分类号： C22C1/1036 , B22D19/14 , B22D27/08 , B22F2202/01 , B22F2998/00 , C22C2001/1047 , C22C47/08
摘要： A metal matrix composite (MMC) material that is castable, or can be rendered castable, is melted and cast into a mold or crucible, and at least a portion of the plurality of reinforcement bodies is permitted to at least partially settle out of their suspension in the molten matrix metal. The casting is solidified, and the sparsely loaded supernatant is separated from the zone of the casting containing the sediment—either by cutting, sawing, etc., or by decanting the supernatant when the casting was still in a molten condition. In a preferred embodiment, during the settling and/or the solidification process, mechanical energy, such as in the form of oscillations, is applied to the MMC melt. The applied energy permits the reinforcement bodies to nestle and pack more efficiently, thereby increasing their volumetric loading in the cast composite.
摘要翻译： 可浇注或可浇铸的金属基质复合材料（MMC）材料被熔化并浇注到模具或坩埚中，并且允许多个增强体的至少一部分至少部分地从其悬浮液中沉淀出来 在熔融基质金属中。 将铸件固化，通过切割，锯切等将稀疏负载的上清液从含有沉淀物的铸件区域分离，或者当铸件仍处于熔融状态时通过倾析上清液。 在优选的实施方案中，在沉降和/或凝固过程期间，将机械能，例如以振荡的形式施加到MMC熔体。 所施加的能量允许增强体更有效地嵌套和包装，从而增加其在铸造复合材料中的体积载荷。
-
4.发明授权公开(公告)号：US07169465B1
公开(公告)日：2007-01-30
申请号：US10073818
申请日：2002-02-11
IPC分类号： B32B9/00
CPC分类号： C22C47/025 , B22F3/1103 , B22F2003/1106 , B22F2998/00 , B22F2999/00 , B82Y10/00 , B82Y30/00 , C22C47/08 , C22C49/14 , C22C2204/00 , H01L23/142 , H01L2924/0002 , H01L2924/09701 , Y10T428/249953 , Y10T428/249964 , Y10T428/249967 , Y10T428/24997 , B22F3/1112 , C22C47/04 , C22C47/06 , B22F3/11 , B22F2201/013 , B22F2201/02 , H01L2924/00
摘要： A low CTE metal-ceramic composite material featuring carbon fibers reinforcing a matrix featuring silicon metal or silicon alloy. The fibers have a low coefficient of thermal expansion (CTE) in the axial direction, and preferably negative. The principles of making Si/SiC composites can be adapted to produce the instant Si matrix composites. The CTE of the composite body depends not only upon the relative CTE's of the fibers and matrix, and their relative amounts (e.g., loadings), but also upon the relative elastic moduli of the fibers and matrix. Thus, Si/SiC matrices produced by a reaction-bonding process inherently possess low CTE, but the instant inventors prefer to make such composites having relatively large fractions of unreacted silicon, thereby driving composite CTE lower still. Here, the carbon fibers are protected from reaction with the silicon infiltrant with one or more materials disposed between the fibers and the infiltrant. Providing at least a degree of toughness or impact resistance can also be realized in these composites. Laminates produce Isotropic or quasi-isotropic properties in the composite body can be realized by, for example, providing the fibers in the form of cross-plied laminates featuring the fibers in parallel or woven arrays.
摘要翻译： 低CTE金属陶瓷复合材料，其特征在于碳纤维增强了具有硅金属或硅合金的基体。 纤维在轴向上的热膨胀系数（CTE）优选为负。 制备Si / SiC复合材料的原理可以适用于生产即时Si基复合材料。 复合体的CTE不仅取决于纤维和基体的相对CTE以及它们的相对量（例如载荷），而且取决于纤维和基体的相对弹性模量。 因此，通过反应连接工艺产生的Si / SiC基体固有地具有低CTE，但是本发明人优选制备具有相对大的未反应硅的分数的复合材料，从而驱动复合CTE较低。 这里，保护碳纤维免受与硅浸润剂的反应，其中一种或多种材料设置在纤维和浸润剂之间。 提供至少一定程度的韧性或抗冲击性也可以在这些复合材料中实现。 通过例如提供以平行或编织阵列的纤维为特征的交叉层叠体的形式的纤维，可以实现层合体在复合体中产生各向同性或准各向同性的特性。
-
公开(公告)号：US07244034B1
公开(公告)日：2007-07-17
申请号：US10663359
申请日：2003-09-16
CPC分类号： C22C47/025 , B22F3/1103 , B22F2003/1106 , B22F2998/00 , B22F2999/00 , B82Y10/00 , B82Y30/00 , C22C47/08 , C22C49/14 , C22C2204/00 , H01L23/142 , H01L2924/0002 , H01L2924/09701 , Y10T428/249953 , Y10T428/249964 , Y10T428/249967 , Y10T428/24997 , B22F3/1112 , C22C47/04 , C22C47/06 , B22F3/11 , B22F2201/013 , B22F2201/02 , H01L2924/00
摘要： A mirror having low density, low CTE, high thermal conductivity, high elastic modulus, and a reflective, polishable surface. The instant mirror features a silicon-based metal coating as the reflective surface, and a composite body as a support or substrate for the reflecting surface. The composite body features carbon fibers reinforcing a matrix containing silicon metal and optionally some silicon carbide. The metal coating can be elemental silicon metal, possibly in amorphous form, and can be applied by a vapor deposition process such as chemical vapor deposition (e.g., plasma enhanced CVD) or physical vapor deposition such as evaporation or electron beam PVD.
摘要翻译： 具有低密度，低CTE，高导热性，高弹性模量和反射性可抛光表面的镜子。 该立体镜具有硅基金属涂层作为反射表面，以及复合体作为用于反射表面的支撑体或基底。 该复合体具有加强含有硅金属和任选的一些碳化硅的基体的碳纤维。 金属涂层可以是元素硅金属，可能是非晶态的，并且可以通过诸如化学气相沉积（例如等离子体增强CVD）或诸如蒸发或电子束PVD的物理气相沉积的气相沉积工艺来施加。
-
-
-
-
搜索结果
5 条记录 (耗时 0.035 秒)
