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1. 发明授权

US5002905A Hexagonal silicon carbide platelets and preforms and methods for making and using same 失效
标题翻译：六角形碳化硅片和预型件及其制造和使用方法
公开(公告)号：US5002905A
公开(公告)日：1991-03-26
申请号：US184994
申请日：1988-04-22
申请人： Wolfgang D. G. Boecker , Stephen Chwastiak , Tadeusz M. Korzekwa , Sai-Kwing Lau
发明人： Wolfgang D. G. Boecker , Stephen Chwastiak , Tadeusz M. Korzekwa , Sai-Kwing Lau
IPC分类号： C01B31/36 , C04B35/80 , C30B25/00
CPC分类号： B82Y30/00 , C01B31/36 , C04B35/806 , C30B25/00 , C30B29/60 , C01P2004/03 , C01P2004/22 , C01P2004/54 , C01P2004/61 , C01P2004/62 , C01P2004/64
摘要： Crystalline silicon carbide wherein at least 90 weight percent of the silicon carbide is formed from a plurality of hexagonal crystal lattices wherein at least 80 weight percent of the crystals formed from the lattices contain at least a portion of opposing parallel base faces separated by a distance of from 0.5 to 20 microns. The crystals may be in the form of separate particles, e.g. separate platelets, or may comprise an intergrown structure. The crystalline silicon carbide of the invention is produced by heating a porous alpha silicon carbide precursor composition comprising silicon and carbon in intimate contact to a temperature of from 2100.degree. C. to 2500.degree. C. in a non-reactive atmosphere. The materials are high performance materials finding use in reinforcing, high temperature thermal insulating, improvement of thermal shock resistance, and modification of electrical properties.
摘要翻译：结晶碳化硅，其中至少90重量％的碳化硅由多个六角晶格形成，其中至少80重量％的由晶格形成的晶体包含至少一部分相对的平行基面， 0.5至20微米。晶体可以是分开的颗粒的形式，例如，单独的血小板，或可以包括共生的结构。本发明的结晶碳化硅通过在非反应性气氛中加热包含硅和碳的多孔α碳化硅前体组合物在2100℃至2500℃的温度下紧密接触来制备。这些材料是用于增强，高温绝热，提高耐热冲击性和改善电性能的高性能材料。

2. 发明授权

US4898367A Dispersing gas into molten metal 失效
标题翻译：将气体分散到熔融金属中
公开(公告)号：US4898367A
公开(公告)日：1990-02-06
申请号：US222934
申请日：1988-07-22
申请人： Paul V. Cooper
发明人： Paul V. Cooper
IPC分类号： C21C7/072 , C22B9/05
CPC分类号： C22B9/05 , C21C7/072
摘要： Gas is dispersed into molten metal by immersing a shaft-supported impeller into the molten metal and by pumping gas through the shaft and out of the impeller. The impeller is in the form of a rectangular prism having sharp-edged corners that shear the gaas into finely divided bubbles. The particular shape of the impeller provides an especially effective bubble-shearing and bubble-dispersing action.
摘要翻译：通过将轴支撑的叶轮浸入熔融金属中并通过泵送气体通过轴并离开叶轮将气体分散到熔融金属中。叶轮是矩形棱柱的形式，具有尖锐的角部，将嘎嘎声切割成细小的气泡。叶轮的特定形状提供了特别有效的气泡剪切和气泡分散作用。

3. 发明授权

US4785191A Interconnected array of photosensors for simultaneously sensing light intensities at each of a number of locations 失效
标题翻译：相互连接的光电传感器阵列，用于同时感测多个位置的每一个处的光强度
公开(公告)号：US4785191A
公开(公告)日：1988-11-15
申请号：US40532
申请日：1987-04-17
申请人： Miroslav Ondris
发明人： Miroslav Ondris
IPC分类号： H01L27/146 , H01L31/10 , H01L31/109 , H04N1/028 , H04N5/369 , H01L27/14
CPC分类号： H01L27/14643 , H01L31/109 , H04N3/1581
摘要： An array for sensing the relative intensity of electromagnetic radiation at a plurality of locations employs a network of photodiodes and non-photoresponsive diodes. A first terminal of each photodiode, e.g. the anode, is electrically connected to a common point which is one terminal of the array. The non-photoresponsive diodes are connected in like-polarity series. The second terminal of each photoresponsive diode is connected to a different connection of non-photoresponsive diodes in the string. The array is scanned with a voltage ramp signal and each change in current flow indicates an illuminated diode. The particular voltage at which current flow changes discloses which photodiode is illuminated. Embodiments of the novel array can be made monolithically without a significant number of conductor cross overs. Monolithic embodimetns of the array may be conveniently formed from monocrystalline semiconductors and thin films of amorphous and polycrystalline semiconductors such as amorphous silicon and electrodeposited cadmium telluride-containing semiconductors.

4. 发明授权

US5194407A Molten metal-resistant ceramic fiber-containing composition 失效
标题翻译：熔融金属耐磨陶瓷纤维组合物
公开(公告)号：US5194407A
公开(公告)日：1993-03-16
申请号：US379342
申请日：1989-08-28
申请人： Steven J. Waisala , Ajit Y. Sane
发明人： Steven J. Waisala , Ajit Y. Sane
IPC分类号： C03C14/00 , C04B14/46 , C04B30/02 , C04B35/636 , C04B35/653 , C04B35/80
CPC分类号： C04B35/653 , C03C14/002 , C04B14/46 , C04B30/02 , C04B35/6365 , C04B35/803 , C03C2214/02
摘要： A method of manufacturing a molten metal-resisting ceramic fiber composition includes mixing ceramic fibers, a frit, ceramic additives, a low temperature binder, and water. The mixture is formed into a desired shape, preferably by being extruded through a die. The shaped mixture is baked at low temperature, and then is fired at high temperature. During firing, the low temperature binder is oxidized and the frit is melted so as to substantially coat the fibers and fuse them into a porous matrix.
摘要翻译：制造耐熔融金属陶瓷纤维组合物的方法包括混合陶瓷纤维，玻璃料，陶瓷添加剂，低温粘合剂和水。混合物形成所需的形状，优选通过挤出模具。将成形的混合物在低温下烘烤，然后在高温下焙烧。在焙烧期间，低温粘合剂被氧化并且玻璃料熔化，以便基本上涂覆纤维并将其熔合成多孔基体。

5. 发明授权

US4964993A Multiple-use molten metal filters 失效
标题翻译：多用熔融金属过滤器
公开(公告)号：US4964993A
公开(公告)日：1990-10-23
申请号：US661543
申请日：1984-10-16
申请人： Edwin P. Stankiewicz
发明人： Edwin P. Stankiewicz
IPC分类号： B01D39/20 , B01D29/11 , C22B9/02
CPC分类号： C22B9/023 , B01D29/111 , B01D2201/182 , Y02P10/234
摘要： The present invention provides at least one cylindrical, close-ended porous, ceramic molten metal filter element connected to an essentially horizontal porous ceramic sealing plate filter element. The cylindrical element extends vertically above the elevation of that sealing plate. The molten metal flow is introduced to the exterior of the close-ended cylindrical elements and the upper surface of the plate element. The cylindrical filter body elements rest on the sealing plate, thus the sealing plate provides all of the structural support for the assembly. The molten metal flows through the porous ceramic material of the cylindrical elements and the sealing plate element to be further flowed downstream, ultimately to the associated casting molds.
摘要翻译：本发明提供了连接到基本上水平的多孔陶瓷密封板过滤器元件的至少一个圆柱形，封闭的多孔陶瓷熔融金属过滤元件。圆柱形元件垂直于该密封板的高度延伸。熔融金属流被引入封闭圆柱形元件的外部和板元件的上表面。圆柱形过滤器主体元件搁置在密封板上，因此密封板提供用于组件的所有结构支撑。熔融金属流过圆柱形元件的多孔陶瓷材料和密封板元件，以进一步向下游流动，最终流到相关联的铸模。

6. 发明授权

US4925609A Oxygen-sensing element 失效
标题翻译：氧传感元件
公开(公告)号：US4925609A
公开(公告)日：1990-05-15
申请号：US182547
申请日：1988-04-18
申请人： Hisao Yamada , Thomas Yuan
发明人： Hisao Yamada , Thomas Yuan
IPC分类号： C04B33/32 , G01N27/407 , G01N27/416
CPC分类号： G01N27/407
摘要： An oxygen-sensing element particularly for use in the exhaust stream of an internal combustion engine. In one embodiment, the sensing element may be a tubular solid electrolyte body with a transverse web forming a relatively shallow recess at one end of the body and a relatively deep tube at the other. Separate electrodes are formed on the surface of the body proximate the recess and on both opposing sides of the web. A porous plug disposed in the recess covers one of the electrodes. When the electrode on the surface of the body is exposed to the exhaust stream of a fuel-rich air-fuel mixture, the EMF across that electrode and the electrode on the underside of the web, which is exposed to fresh air, is indicative of the oxygen content of the exhaust stream. When an exhaust stream from a fuel-lean air-fuel mixture is present, the magnitude of an oxygen pumping current that flows between the electrodes disposed on opposing sides of the web, in response to a voltage applied across those electrodes, indicates the oxygen content of the exhaust stream.The sensing element body may be conveniently formed from a slip prepared by ball milling yttria-stabilized zirconia powder with water and a binder. The slip may be cast in a mold or dried to form a flowable powder that is molded under pressure to form a green body. After calcining of the green body, electrodes are formed on the body by applying a platinum paste and heating it. A slurry of ball-milled calcined yttria-stabilized zirconia powder is disposed in the recess. The calcined green body and slurry are fired to produce a sensing element in which a tightly fitting porous plug, free of cracks and shrinkage away from the body, is disposed in the recess.
摘要翻译：一种特别用于内燃机排气流的氧气感测元件。在一个实施例中，感测元件可以是管状固体电解质体，其横向腹板在主体的一端形成相对浅的凹部，而在另一端形成相对较深的管。单独的电极形成在靠近凹槽的本体的表面上并且在幅材的两个相对侧上。设置在凹部中的多孔塞覆盖电极中的一个。当身体表面上的电极暴露于富燃料空气 - 燃料混合物的排气流时，穿过该电极的EMF和暴露于新鲜空气的幅材下侧的电极表示排气流的氧含量。当存在来自贫燃料的空气燃料混合物的废气流时，响应于施加在这些电极上的电压而在布置在幅材的相对侧上的电极之间流动的氧气抽吸电流的大小表示氧含量的排气流。感测元件主体可以方便地由球磨氧化钇稳定的氧化锆粉末与水和粘合剂制成的滑块形成。滑块可以在模具中铸造或干燥以形成在压力下成型以形成生坯体的可流动粉末。在生坯体煅烧后，通过施加铂膏并加热电极，在体上形成电极。将球磨的煅烧氧化钇稳定的氧化锆粉末的浆料设置在凹槽中。煅烧的生坯和浆料被烧制以产生感测元件，其中紧密配合的多孔塞没有裂缝和远离体的收缩被布置在凹槽中。

7. 发明授权

US4871108A Silicon carbide-to-metal joint and method of making same 失效
标题翻译：碳化硅 - 金属接头及其制造方法
公开(公告)号：US4871108A
公开(公告)日：1989-10-03
申请号：US120728
申请日：1987-11-16
申请人： Wolfgang D. G. Boecker , Laurence N. Hailey
发明人： Wolfgang D. G. Boecker , Laurence N. Hailey
IPC分类号： C04B37/02 , C04B41/52 , C04B41/89
CPC分类号： C04B41/89 , C04B37/026 , C04B41/52 , C04B2237/12 , C04B2237/122 , C04B2237/123 , C04B2237/124 , C04B2237/125 , C04B2237/365 , C04B2237/406 , C04B2237/52 , C04B2237/708 , C04B2237/72
摘要： A method of preparing a surface of a silicon carbide article for joining by metal brazing to metal by micro-roughening that surface of the silicon carbide which is to be brazed, applying catalyst consisting essentially of aqueous PdCl.sub.2 directly to the micro-roughened surface, in the absence of pretreatment of said surface with stannous chloride, and electrolessly depositing a thin layer of metal selected from the group consisting of Ni, Cr, Au, Ag and Cu on said catalyst-treated surface.
摘要翻译：制备用于通过金属钎焊与金属接合的表面的方法，该方法是将要钎焊的碳化硅的表面进行微粗化，将基本上由PdCl 2水溶液施加的催化剂直接施加到微粗糙表面上，没有用氯化亚锡预处理所述表面，并且在所述催化剂处理的表面上无电沉积选自Ni，Cr，Au，Ag和Cu的金属薄层。

8. 发明授权

US4803822A Modular furnace lining and hardware system therefor 失效
标题翻译：模块化炉衬及其硬件系统
公开(公告)号：US4803822A
公开(公告)日：1989-02-14
申请号：US8892
申请日：1987-01-30
申请人： Gary W. Deren
发明人： Gary W. Deren
IPC分类号： F27D1/00 , F27D1/14 , F23M5/00 , E04B1/62 , E04B1/80
CPC分类号： F27D1/144
摘要： Attachment hardware and modular furnace lining which may be secured to an interior surface of a furnace by any one of a variety of methods. E.g., welding, self-tapping screw, or to a previously secured stud or matingly configured member. In a preferred embodiment the module is formed of refractory ceramic fiber blanket portions which are retained into a modular unit by the hardware system. Each module includes hardware having support structure which passes through the layers of blanket adjacent the furnace wall. The hardware includes a collar which is moveable relative to the base bar to allow adjustment of the position of the module and means to facilitate access from the hot face of the module to install it.

9. 发明授权

US4795673A Composite material of discontinuous silicon carbide particles and continuous silicon matrix and method of producing same 失效
标题翻译：不连续碳化硅颗粒和连续硅基体的复合材料及其制备方法
公开(公告)号：US4795673A
公开(公告)日：1989-01-03
申请号：US924174
申请日：1986-10-28
申请人： Francis J. Frechette , Martin R. Kasprzyk , Douglas J. McDowell , Joseph S. Zanghi
发明人： Francis J. Frechette , Martin R. Kasprzyk , Douglas J. McDowell , Joseph S. Zanghi
IPC分类号： C04B35/56 , C04B35/573 , C04B35/71 , C22C29/06 , C22C32/00 , B32B5/16 , B32B , C04B33/34 , C04B33/36
CPC分类号： C04B35/565 , C04B35/573 , C04B35/71 , C22C29/065 , C22C32/0063 , Y10T428/259 , Y10T428/2993
摘要： Dense, strong, composite materials are produced from mixtures of silicon and silicon carbide. The composite materials are characterized by a mixture of finely-divided silicon carbide in a substantially continuous matrix of silicon. The composite materials contain from about 40 to about 60 percent by volume silicon carbide and from about 60 to about 40 percent by volume silicon. The composite materials are produced by initially producing a finely-divided silicon carbide starting component and forming the component into a green body of the desired shape. The green body is subsequently impregnated with molten silicon in the absence of any substantial amount of carbon. Suitably, a thermoplastic resin binder may be added to the silicon carbide starting material to aid in forming the green body. The impregnation step may be carried out by surrounding the green body with finely-divided silicon metal and heating the covered body to a temperature above the melting point of silicon. The composite materials described have flexural strength of over about 90,000 psi at 1100.degree. C., elastic modulus of about 38 million psi at room temperature, are essentially non-porus and have densities ranging from about 2.6 to about 2.8 g/cc.
摘要翻译：由硅和碳化硅的混合物制成密集的，强的复合材料。复合材料的特征在于基本上连续的硅基体中的细碎碳化硅的混合物。复合材料含有约40至约60体积％的碳化硅和约60至约40体积％的硅。复合材料通过最初生产细碎的碳化硅起始组分并将组分形成所需形状的生坯体来制备。随后在不存在任何大量碳的情况下，将生坯体浸入熔融硅中。适当地，可以将热塑性树脂粘合剂添加到碳化硅原料以帮助形成生坯。浸渍步骤可以通过用细碎的硅金属包围生坯并将被覆盖体加热到高于硅熔点的温度来进行。所描述的复合材料在1100℃下具有超过约90,000psi的弯曲强度，在室温下的弹性模量约为3800万psi，基本上为非孔隙，密度范围为约2.6至约2.8g / cc。

10. 发明授权

US4981665A Hexagonal silicon carbide platelets and preforms and methods for making and using same 失效
公开(公告)号：US4981665A
公开(公告)日：1991-01-01
申请号：US185183
申请日：1988-04-22
申请人： Wolfgang D. G. Boecker , Stephen Chwastiak , Tadeusz M. Korzekwa , Sai-Kwing Lau
发明人： Wolfgang D. G. Boecker , Stephen Chwastiak , Tadeusz M. Korzekwa , Sai-Kwing Lau
IPC分类号： C01B31/36 , C30B25/00
CPC分类号： B82Y30/00 , C01B31/36 , C30B25/00 , C30B29/60 , C01P2004/03 , C01P2004/22 , C01P2004/54 , C01P2004/61 , C01P2004/62 , C01P2004/64
摘要： Crystalline silicon carbide wherein at least 90 weight percent of the silicon carbide is formed from a plurality of hexagonal crystal lattices wherein at least 80 weight percent of the crystals formed from the lattices contain at least a portion of opposing parallel base faces separated by a distance of from 0.5 to 20 microns. The crystals may be in the form of separate particles, e.g. separate platelets, or may comprise an intergrown structure. The crystalline silicon carbide of the invention is produced by heating a porous alpha silicon carbide precursor composition comprising silicon and carbon in intimate contact to a temperature of from 2100.degree. C. to 2500.degree. C. in a non-reactive atmosphere. The materials are high performance materials finding use in reinforcing, high temperature thermal insulating, improvement of thermal shock resistance, and modification of electrical properties.

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