METHOD FOR PRODUCING SINTERED CUBIC BORON NITRIDE COMPACT
    11.
    发明申请
    METHOD FOR PRODUCING SINTERED CUBIC BORON NITRIDE COMPACT 有权
    生产烧结陶瓷氮化物复合材料的方法

    公开(公告)号:US20110192093A1

    公开(公告)日:2011-08-11

    申请号:US13022834

    申请日:2011-02-08

    IPC分类号: B01J3/06 C04B35/5831 B24D3/00

    摘要: A method for producing a highly uniform and highly dense sintered cubic boron nitride compact having high hardness by sintering at a milder condition without a binder, is provided. The method includes deflocculating secondary particles in cubic boron nitride starting powders by dispersing the starting powders in a solution of a deflocculant; molding the green compact after removing the solution of the deflocculant from the starting powders; and then sintering the green compact in the presence of a supercritical fluid source in a supercritical state by pressing and heating the green compact together with the supercritical fluid source. The supercritical fluid source can be one or more selected from a group consisted of polyvinylidene chloride, polyvinyl chloride, polyethylene, polypropylene, polystyrene, a polyester and an ABS resin. In the sintering, the pressure is 5 GPa or higher, and the temperature is 1400° C. or higher. According to the method, a highly uniform and highly dense sintered cubic boron nitride sintered compact having high hardness, can be obtained.

    摘要翻译: 提供了一种通过在较温和的条件下烧结而不用粘合剂来制造具有高硬度的高均匀高密度烧结立方氮化硼压块的方法。 该方法包括通过将起始粉末分散在抗絮凝剂溶液中来使立方氮化硼起始粉末中的二次粒子脱絮凝; 在从起始粉末中除去抗絮凝剂的溶液之后,模压生坯; 然后在超临界状态的超临界流体源的存在下,通过与超临界流体源一起压制和加热生坯,来烧结生坯。 超临界流体源可以是选自聚偏二氯乙烯,聚氯乙烯,聚乙烯,聚丙烯,聚苯乙烯,聚酯和ABS树脂中的一种或多种。 烧结时的压力为5GPa以上,温度为1400℃以上。 根据该方法,可以获得具有高硬度的高度均匀且高密度的烧结立方氮化硼烧结体。

    Binder compositions and methods for binder assisted forming
    14.
    发明授权
    Binder compositions and methods for binder assisted forming 失效
    粘合剂组合物和粘合剂辅助成型的方法

    公开(公告)号:US07326274B2

    公开(公告)日:2008-02-05

    申请号:US10272798

    申请日:2002-10-17

    摘要: Multiphase polymeric binders for binder assisted forming of sinterable powder bodies are formulated to demonstrate improved rheological properties in the form of newtonion or near newtonion flow behavior thereby reducing dependence of binder viscosity on shear by tailoring the molecular weight and molecular weight distribution of the polymeric binder phases and the resulting polymer admixtures of the invention demonstrate shear rate independent behavior. Reduction of interfacial tension between binder phases by introduction of at least one macromolecule with separate segments selected to be compatible with the individual phases of the binder further increases processing performance as does use of polymer macromolecules having attributes that allow them to act as surface active materials at the interface of the sinterable powder and the multiphase binder composition. Predispersion of the surface active materials in the powder is facilitated by emulsification thereof in water prior to admixture with the powder.

    摘要翻译: 配制用于粘合剂辅助形成可烧结粉末体的多相聚合物粘合剂被配制成以牛顿形式或接近牛顿流动性质的形式证明改进的流变性质,从而通过调整聚合物粘合剂相的分子量和分子量分布来减少粘合剂粘度对剪切的依赖性 并且所得到的本发明的聚合物外加剂显示出与剪切速率无关的行为。 通过引入至少一个选自与粘合剂的各相相容的分离段的大分子来降低粘合剂相之间的界面张力进一步提高了加工性能,因为使用具有允许它们作为表面活性材料的特性的聚合物大分子 可烧结粉末和多相粘结剂组合物的界面。 粉末中的表面活性物质的预分散通过在与粉末混合之前在水中乳化而促进。

    Method of manufacturing honeycomb structure
    16.
    发明申请
    Method of manufacturing honeycomb structure 有权
    制造蜂窝结构的方法

    公开(公告)号:US20050244583A1

    公开(公告)日:2005-11-03

    申请号:US10523683

    申请日:2003-07-18

    申请人: Sadaaki Hirai

    发明人: Sadaaki Hirai

    摘要: A honeycomb formed article comprising a plurality of partition walls is prepared using clay mainly composed of a ceramic material, a partition wall strengthening agent obtained by mixing a partition wall strengthening material with a dispersion medium mainly composed of an amphipathic liquid compound having both hydrophilic and hydrophobic groups is coated to a plurality of partition walls existing in at least one cell opening end portion of the formed article, and thereafter the article is fired. According to this method, while largely improving enhancement of productivity and product cost reduction, a honeycomb structure superior in isostatic strength and resistance to erosion can be stably obtained.

    摘要翻译: 使用主要由陶瓷材料组成的粘土制备包括多个分隔壁的蜂窝成形体,通过将分隔壁强化材料与主要由具有亲水性和疏水性的两亲性液体化合物组成的分散介质混合而获得的分隔壁增强剂 将组涂覆到存在于成形制品的至少一个电池开口端部中的多个分隔壁,然后将制品烧制。 根据该方法,在大幅提高生产率和降低成本的同时,能够稳定地获得等静压强度和耐侵蚀性优异的蜂窝结构体。

    Ceramic pin heating element with integrated connector contacts and method for making same
    18.
    发明授权
    Ceramic pin heating element with integrated connector contacts and method for making same 失效
    具有集成连接器触点的陶瓷针加热元件及其制造方法

    公开(公告)号:US06563093B2

    公开(公告)日:2003-05-13

    申请号:US09874765

    申请日:2001-06-05

    IPC分类号: H05B310

    摘要: A ceramic pin heating element having exterior heating conductors and integrated electrical connection surfaces, and method for making same. A first body is injection molded from a first injection-moldable ceramic composite compound having a first electrical resistance, and a second body is injection-molded from a second injection-moldable ceramic composite compound having a second electrical resistance about the first body so as to form a compound body. The compound body is then sintered. The resulting ceramic pin heating element is directly formed without additional steps for protecting (insulating) the element so as to prevent the exterior, complementary heating conductors from contacting the housing and/or terminal bolts. The danger of breakage of the pins at the mounting location and/or at the seal seat through variations in the thickness of contact and/or insulation coatings is minimized.

    摘要翻译: 具有外部加热导体和集成电连接表面的陶瓷针加热元件及其制造方法。 第一主体由具有第一电阻的第一可注射成型陶瓷复合材料注塑成型,第二主体由第二可注射成型陶瓷复合材料注射成型,第二可注射成型陶瓷复合材料围绕第一主体具有第二电阻,从而 形成复合体。 然后将复合体烧结。 所形成的陶瓷针加热元件直接形成,而没有额外的步骤来保护(绝缘)元件,以防止外部互补的加热导体接触壳体和/或端子螺栓。 通过接触和/或绝缘涂层的厚度变化,在安装位置和/或密封座处的销破裂的危险被最小化。

    Ceramic pin heating element with integrated connector contacts and method for making same
    19.
    发明申请
    Ceramic pin heating element with integrated connector contacts and method for making same 失效
    具有集成连接器触点的陶瓷针加热元件及其制造方法

    公开(公告)号:US20010026035A1

    公开(公告)日:2001-10-04

    申请号:US09874765

    申请日:2001-06-05

    IPC分类号: C04B033/32 H01C001/034

    摘要: A ceramic pin heating element having exterior heating conductors and integrated electrical connection surfaces, and method for making same. A first body is injection molded from a first injection-moldable ceramic composite compound having a first electrical resistance, and a second body is injection-molded from a second injection-moldable ceramic composite compound having a second electrical resistance about the first body so as to form a compound body. The compound body is then sintered. The resulting ceramic pin heating element is directly formed without additional steps for protecting (insulating) the element so as to prevent the exterior, complementary heating conductors from contacting the housing and/or terminal bolts. The danger of breakage of the pins at the mounting location and/or at the seal seat through variations in the thickness of contact and/or insulation coatings is minimized.

    摘要翻译: 具有外部加热导体和集成电连接表面的陶瓷针加热元件及其制造方法。 第一主体由具有第一电阻的第一可注射成型陶瓷复合材料注塑成型,第二主体由第二可注射成型陶瓷复合材料注射成型,第二可注射成型陶瓷复合材料围绕第一主体具有第二电阻,从而 形成复合体。 然后将复合体烧结。 所形成的陶瓷针加热元件直接形成,而没有额外的步骤来保护(绝缘)元件,以防止外部互补的加热导体接触壳体和/或端子螺栓。 通过接触和/或绝缘涂层的厚度变化,在安装位置和/或密封座处的销破裂的危险被最小化。