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    Porous ceramic bodies and process for their preparation
    2.
    发明授权
    Porous ceramic bodies and process for their preparation 有权
    多孔陶瓷体及其制备方法

    公开(公告)号：US09175167B2

    公开(公告)日：2015-11-03

    申请号：US14594009

    申请日：2015-01-09

    Applicant: Imerys Ceramics France

    Inventor： Axel Mueller-Zell

    IPC: C09C3/06 ,  C04B38/00 ,  C04B33/24 ,  C04B33/30

    CPC classification number: C09C3/063 ,  C04B33/24 ,  C04B33/30 ,  C04B38/0096 ,  C04B2235/664 ,  C04B2235/77 ,  C04B2235/96 ,  Y10T428/249956 ,  C04B38/0054 ,  C04B38/0058 ,  C04B38/0061 ,  C04B38/0074 ,  C04B38/065 ,  C04B38/068 ,  C04B38/0635 ,  C04B38/067

    Abstract: A process for producing a porous ceramic body comprises a) mixing a coated porogen with a silicate or a oxide ceramic precursor, wherein the porogen is decomposable to gaseous decomposition products and optionally solid products upon heating, and is coated with a coating agent; b) forming a green body from the mixture obtained in step (a); and c) firing the green body obtained in step (b) to obtain the ceramic body, whereby the porogen decomposes to form pores within the ceramic body and the coating agent is deposited at the inner surface of the pores. The porogen is coated with a coating agent which, upon firing, is deposited at the inner surface of the ceramic pores, so that porous ceramics having decreased weight and improved porosity are obtained, while maintaining at the same time good mechanical strength. A green body and a porous ceramic body obtainable with the above-mentioned process are described too.

    Abstract translation: 一种制造多孔陶瓷体的方法，包括：a）将涂覆的致孔剂与硅酸盐或氧化物陶瓷前体混合，其中致孔剂在加热时可分解成气态分解产物和任选的固体产物，并涂覆有涂层剂; b）从步骤（a）中获得的混合物形成生坯; 和c）烧制步骤（b）中获得的生坯以获得陶瓷体，由此致孔剂在陶瓷体内分解形成孔，并且涂层剂沉积在孔的内表面。 致孔剂涂覆有涂层剂，其在烧制时沉积在陶瓷孔的内表面，从而获得具有减轻重量和改善孔隙率的多孔陶瓷，同时保持良好的机械强度。 还描述了可通过上述方法获得的生坯体和多孔陶瓷体。

    Nanoparticles-containing composite porous body and method of making the porous body
    4.
    发明申请
    Nanoparticles-containing composite porous body and method of making the porous body 审中-公开
    含纳米颗粒的复合多孔体及其制造方法

    公开(公告)号：US20060057355A1

    公开(公告)日：2006-03-16

    申请号：US11251749

    申请日：2005-10-17

    Applicant: Masa-aki Suzuki ,  Takashi Hashida ,  Yuji Kudoh

    Inventor： Masa-aki Suzuki ,  Takashi Hashida ,  Yuji Kudoh

    IPC: B32B5/14 ,  B32B9/00

    CPC classification number: C01B37/00 ,  B82Y30/00 ,  C04B38/00 ,  C04B2111/00008 ,  Y10T428/249958 ,  Y10T428/249987 ,  Y10T428/30 ,  C04B35/00 ,  C04B38/0635

    Abstract: A nanoparticles-containing composite porous body according to the present invention includes a porous body having a solid skeleton and pores and nanoparticles of an inorganic substance. The nanoparticles are carried on the solid skeleton without coagulating together or being chemically bonded to the skeleton. The nanoparticles may be coated with organic aggregates and carried as composite particles on the solid skeleton. As the organic aggregates, spherical organic aggregates such as a spherical protein or a dendrimer are preferably used. Also, the organic aggregates may be decomposed and removed if necessary.

    Abstract translation: 根据本发明的含纳米颗粒的复合多孔体包括具有固体骨架的多孔体和无机物质的纳米颗粒。 纳米颗粒承载在固体骨架上，而不凝固在一起或与骨架化学键合。 纳米颗粒可以用有机聚集体涂覆并作为复合颗粒携带在固体骨架上。 作为有机聚集体，优选使用球状蛋白质或树枝状聚合物等球状有机聚集体。 此外，如果需要，有机聚集体可以被分解和除去。

    Lightweight proppant and method of making same
    5.
    发明申请
    Lightweight proppant and method of making same 审中-公开
    轻质支撑剂及其制作方法

    公开(公告)号：US20060016598A1

    公开(公告)日：2006-01-26

    申请号：US10911679

    申请日：2004-07-21

    Applicant: Thomas Urbanek

    Inventor： Thomas Urbanek

    IPC: C09K8/00 ,  E21B43/267 ,  E21B43/16

    CPC classification number: C04B38/009 ,  C04B33/132 ,  C04B35/117 ,  C04B35/443 ,  C04B35/62625 ,  C04B2103/42 ,  C04B2201/20 ,  C04B2235/3463 ,  C04B2235/77 ,  C04B2235/94 ,  C04B2235/96 ,  C09K8/80 ,  Y02P40/69 ,  C04B35/185 ,  C04B38/007 ,  C04B38/0058 ,  C04B38/0635 ,  C04B38/0675 ,  C04B38/02 ,  C04B38/08

    Abstract: A lightweight, high-strength proppant is disclosed, comprising the formation of finely dispersed ceramic precursors and sintering at low temperatures, causing the formation and retention of mesopores and micropores in pelletized ceramic. A method of manufacturing such a proppant is also disclosed, comprising the steps of manufacturing finely divided ceramic precursors and additives using grinding, milling, and preferably sol-gel processes, and dispersing the finely divided ceramic precursors and additives in a liquid, preferably water. The dispersion has a viscosity profile, which permits the shaping of spheres using conventional pelletizing techniques. Drying of the pellets and sintering at temperatures below 1,400.degrees. C. forms and retains mesopores and micropores in the ceramic. Preferred total pore volumes range from 0.05 to 0.7 cm.sup.3/g. The pelletized and porous ceramic is useful as lightweight and high-strength proppants.

    Abstract translation: 公开了一种轻质的高强度支撑剂，其包括形成细分散的陶瓷前体并在低温下烧结，导致在颗粒状陶瓷中形成和保留中孔和微孔。 还公开了制造这种支撑剂的方法，包括以下步骤：使用研磨，研磨和优选溶胶 - 凝胶法制造细碎的陶瓷前体和添加剂，并将细碎的陶瓷前体和添加剂分散在液体，优选水中。 分散体具有粘度分布，其允许使用常规造粒技术成形球体。 干燥颗粒并在低于1400℃的温度下烧结。 C.形成并保留陶瓷中的中孔和微孔。 优选的总孔体积为0.05-0.7cm 3 / g。 造粒和多孔陶瓷可用作轻质和高强度的支撑剂。

    Sinterable structures and method
    6.
    发明申请
    Sinterable structures and method 有权
    可烧结结构和方法

    公开(公告)号：US20050239628A1

    公开(公告)日：2005-10-27

    申请号：US11170987

    申请日：2005-06-30

    Applicant: James Johnson ,  Michael Frencl

    Inventor： James Johnson ,  Michael Frencl

    IPC: C04B26/28 ,  C04B38/06

    CPC classification number: B22F3/1121 ,  C04B26/28 ,  C04B35/111 ,  C04B35/447 ,  C04B35/624 ,  C04B35/6365 ,  C04B38/062 ,  C04B38/0635 ,  C04B2111/00793 ,  C04B2111/0081 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/602 ,  C04B2235/6021 ,  C04B2235/658 ,  C04B2235/9661 ,  C04B35/00 ,  C04B38/0058 ,  C04B14/366 ,  C04B24/12 ,  C04B40/0028 ,  C04B40/0268 ,  C04B38/0054

    Abstract: A method of producing an open, porous structure having an outer surface defining a shape having a bulk volume and having interconnecting openings extending throughout said volume and opening through said surface, and products resulting from the method. The method comprises preparing a viscous mixture comprising a sinterable powder dispersed in a sol of a polymer in a primary solvent, replacing the primary solvent with a secondary liquid in which the polymer is insoluble to produce a gel comprising an open polymeric network having the sinterable powder arranged therein, removing the secondary liquid from the gel; removing the polymer network, and sintering the sinterable powder to form the open, porous structure. Also disclosed are shaped, porous products resulting from methods of the invention.

    Abstract translation: 一种制造开放多孔结构的方法，其具有限定具有本体体积的形状的外表面，并且具有贯穿所述体积延伸并穿过所述表面的互连开口，以及由该方法产生的产品。 该方法包括制备粘性混合物，其包含分散在聚合物溶胶中的可烧结粉末于主溶剂中，用第二液体代替主溶剂，其中聚合物不溶于其中以产生包含具有可烧结粉末的开放聚合物网络的凝胶 布置在其中，从凝胶中除去第二液体; 去除聚合物网络，并烧结可烧结粉末以形成开放的多孔结构。 还公开了由本发明的方法得到的成形的多孔产品。

    Dense, self-sintered silicon carbide/carbon graphite composite
    7.
    发明授权
    Dense, self-sintered silicon carbide/carbon graphite composite 失效
    密实，自烧碳化硅/碳石墨复合材料

    公开(公告)号：US5656563A

    公开(公告)日：1997-08-12

    申请号：US460052

    申请日：1995-06-02

    Applicant: Xin E. Chen ,  Mark E. Pfaff

    Inventor： Xin E. Chen ,  Mark E. Pfaff

    IPC: C04B35/532 ,  C04B35/565 ,  C04B35/626 ,  C04B38/06 ,  C04B41/50 ,  F27D1/00

    CPC classification number: F27D1/0006 ,  C04B35/532 ,  C04B35/565 ,  C04B38/06 ,  C04B38/0635 ,  C04B41/5001

    Abstract: A dense, self-sintered silicon carbide/carbon-graphite composite material and a process for producing the composite material is disclosed. The composite material comprises a silicon carbide matrix, between 2 and 30 percent by weight carbon-graphite, and small amounts of sintering aids such as boron and free carbon. The silicon carbide has an average grain size between 2 and 15 .mu.m, and the carbon-graphite has an average grain size between 10 and 75 .mu.m, the average grain size of the carbon-graphite being greater than the average grain size of the silicon-carbide. The composite material has a density of at least 80 percent of theoretical density as determined by the rule of mixtures for a composite material. This density is achieved with minimal microcracking at a high graphite loading with large graphite particles. The composite material exhibits good lubricity and wear characteristics, resulting in improved tribological performance. The process for producing the composite material uses a carbon-bonded graphite comprising at least 5 percent by weight carbon-precursor binder.

    Abstract translation: 公开了一种致密的，自烧结的碳化硅/碳 - 石墨复合材料和复合材料的制造方法。 该复合材料包括碳化硅基体，2至30重量％的碳 - 石墨和少量的烧结助剂如硼和游离碳。 碳化硅的平均粒径为2〜15μm，碳石墨的平均粒径为10〜75μm，碳石墨的平均粒径大于平均粒径 碳化硅。 复合材料具有通过复合材料的混合物规则确定的理论密度的至少80％的密度。 在具有大石墨颗粒的高石墨负载下，通过最小的微裂纹实现该密度。 复合材料表现出良好的润滑性和磨损特性，从而改善了摩擦学性能。 制备复合材料的方法使用包含至少5重量％碳前体粘合剂的碳键合石墨。

    Composite ceramics and method of making the same
    8.
    发明授权
    Composite ceramics and method of making the same 失效
    复合陶瓷及其制作方法

    公开(公告)号：US4923829A

    公开(公告)日：1990-05-08

    申请号：US312300

    申请日：1989-02-17

    Applicant: Yoshiyuki Yasutomi ,  Yasuo Matsushita ,  Kousuke Nakamura

    Inventor： Yoshiyuki Yasutomi ,  Yasuo Matsushita ,  Kousuke Nakamura

    IPC: C04B35/584 ,  C04B35/56 ,  C04B35/58 ,  C04B35/591 ,  C04B35/80 ,  C04B38/06 ,  C22C29/00 ,  C22C49/00

    CPC classification number: C04B35/58014 ,  C04B35/5607 ,  C04B35/5611 ,  C04B35/5622 ,  C04B35/5626 ,  C04B35/58007 ,  C04B35/58028 ,  C04B35/58064 ,  C04B35/58071 ,  C04B35/58078 ,  C04B35/58092 ,  C04B35/584 ,  C04B35/591 ,  C04B35/62295 ,  C04B35/806 ,  C04B38/0635 ,  C22C29/00 ,  C22C49/00

    Abstract: Composite ceramic materials and a method of the same are disclosed, in which a ceramic material mainly containing silicon nitride, and at least one compound selected from a group consisting of nitrides, carbides, borides, silicides, oxides and oxynitrides of elements belonging to IIIa, IIIb, IVa, IBb, Va, VIa and VIII are combined to form a sintered body, and particles and whiskers of the ceramic material and compound are interlocked with each other and fixed so that the sintered body has a porosity of 5 to 30%. In the above composite ceramics, the particle of the compound are coupled with each other through the whisker or particle of the ceramic material. Accordingly, the composite ceramics are small in charge rate of size due to sintering, and are excellent in tenacity, heat resisting property and thermal shock resisting property. Further, the resistivity of the sintered body can be varied by changing the mixture ratio of ceramic material and compound.

    Abstract translation: 公开了复合陶瓷材料及其制造方法，其中主要含有氮化硅的陶瓷材料和选自属于IIIa的元素的氮化物，碳化物，硼化物，硅化物，氧化物和氮氧化物中的至少一种化合物， 将IIIb，IVa，IBb，Va，VIa和VIII组合形成烧结体，并将陶瓷材料和化合物的颗粒和晶须彼此互锁并固定，使得烧结体的孔隙率为5〜30％。 在上述复合陶瓷中，化合物的颗粒通过陶瓷材料的晶须或颗粒相互耦合。 因此，复合陶瓷由于烧结而具有小的电荷率，并且韧性，耐热性和耐热冲击性优异。 此外，可以通过改变陶瓷材料和化合物的混合比来改变烧结体的电阻率。

    POROUS ACID-RESISTANT CERAMIC MEDIA
    10.
    发明公开
    POROUS ACID-RESISTANT CERAMIC MEDIA 审中-公开

    公开(公告)号：US20230219854A1

    公开(公告)日：2023-07-13

    申请号：US18188116

    申请日：2023-03-22

    Applicant: Saint-Gobain Ceramics & Plastics, Inc.

    Inventor： John S Reid

    IPC: C04B38/06

    CPC classification number: C04B38/0635 ,  C04B2235/349 ,  C04B2235/3826 ,  C04B2235/9692

    Abstract: The present disclosure relates to a porous ceramic media that may include a chemical composition, a phase composition, a total open porosity content of at least about 10 vol. % and not greater than about 70 vol. % as a percentage of the total volume of the ceramic media, and a nitric acid resistance parameter of not greater than about 500 ppm. The chemical composition for the porous ceramic media may include SiO2, Al2O3, an alkali component and a secondary metal oxide component selected from the group consisting of an Fe oxide, a Ti oxide, a Ca oxide, a Mg oxide and combinations thereof. The phase composition may include an amorphous silicate, quartz and mullite.

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