High strength/high surface area alumina ceramics
    1.
    发明授权
    High strength/high surface area alumina ceramics 失效
    高强度/高表面积氧化铝陶瓷

    公开(公告)号:US06365259B1

    公开(公告)日:2002-04-02

    申请号:US09467741

    申请日:1999-12-20

    IPC分类号: B32B312

    摘要: Ceramic honeycombs incorporating cell walls of a sintered alumina material providing controlled pore size distribution in combination with high BET surface area and flexural (MOR) strength are formed by the extrusion, drying and firing of plasticized alumina powder batches containing major proportions of anhydrous, high-surface-area gamma alumina powders dispersed with selected acids; low combined drying and firing shrinkages provide strong, crack-free bodies of high surface area and strength.

    摘要翻译: 通过挤出,干燥和焙烧含有主要比例的无水高岭石的增塑的氧化铝粉末组合物,形成了结合高BET值表面积和弯曲(MOR)强度而提供受控孔径分布的烧结氧化铝材料的细胞壁的陶瓷蜂窝体, 用选择的酸分散的表面积γ氧化铝粉末; 低组合干燥和烧结收缩提供强大的,无裂纹的高表面积和强度的物体。

    Sintered metal bodies and manufacturing method therefor
    2.
    发明授权
    Sintered metal bodies and manufacturing method therefor 失效
    烧结金属体及其制造方法

    公开(公告)号:US5427601A

    公开(公告)日:1995-06-27

    申请号:US767889

    申请日:1991-09-30

    摘要: A sintered metal body is disclosed of composition consisting essentially of in weight percent about 5 to 40 Cr, about 2 to 30 Al, 0 to about 5 special metal, 0 to about 4 rare earth oxide additive, and the balance Fe group metal and unavoidable impurities,the composition including at least one component selected from component A and/or component B, component A being special metal, and component B being at least an effective amount of rare earth oxide additive,the special metal being a first special metal component, and optionally, a second special metal component when rare earth oxide additive is 0, the first special metal component consisting of at least one of: Y, lanthanides, Zr, Hf, Ti, Si, and B, and the second special metal component consisting of at least one of: alkaline earth metal, Cu, and Sn, and the special metal being a third special metal component when rare earth oxide additive is >0, the third special metal component consisting of at least one of Y, lanthanides, Zr, Hf, Ti, Si, alkaline earth metal, B, Cu, and Sn.The body is excellent in oxidation resistance at high temperatures, heat resistance, and corrosion resistance, and can be suitably used by itself as a carrier for catalysts, for exhaust gas purification, etc., or as a monolith catalyst comprising catalyst carrier and catalyst supported thereon, and as a heater or catalytic converter by providing electrodes on the body.

    摘要翻译: 公开了一种烧结金属体,其组成主要包括重量百分比约5至40 Cr,约2至30种Al,0至约5种特殊金属,0至约4种稀土氧化物添加剂,余量为Fe族金属,不可避免 杂质,所述组合物包含选自组分A和/或组分B中的至少一种组分,组分A为特殊金属,组分B为至少有效量的稀土氧化物添加剂,所述特殊金属为第一特殊金属组分, 以及任选地,当稀土氧化物添加剂为0时的第二特殊金属组分,所述第一特殊金属组分由以下中的至少一种组成:Y,镧系元素,Zr,Hf,Ti,Si和B,并且所述第二特殊金属组分 的碱土金属,Cu和Sn中的至少一种,当稀土氧化物添加剂为> 0时,特殊金属是第三种特殊金属组分,第三种特殊金属组分由Y,镧系元素,Zr中的至少一种组成 , H f,Ti,Si,碱土金属,B,Cu和Sn。 本体在高温下的耐氧化性,耐热性和耐腐蚀性优异,可以适合用作催化剂载体,废气净化等,或作为包含催化剂载体和催化剂的整料催化剂 以及作为加热器或催化转化器,通过在主体上设置电极。

    Method for rapid stiffening of extrudates
    5.
    发明授权
    Method for rapid stiffening of extrudates 失效
    挤出物快速硬化的方法

    公开(公告)号:US5797081A

    公开(公告)日:1998-08-18

    申请号:US852765

    申请日:1997-05-07

    摘要: An improvement in a method of extruding a plasticized powder mixture having a thermally gellable binder carried in an aqueous vehicle, by passing the mixture through an extruder and then through a die to produce an extrudate, the improvement being the additional step of contacting the extrudate directly after it leaves the die with an agent for simultaneously lowering the gel point of the binder and dehydrating the extrudate. The result is a stiffening of the extrudate in a shorter time than it would be, absent the additional step.

    摘要翻译: 通过使混合物通过挤出机然后通过模具以产生挤出物来挤出具有在水性载体中携带的热可胶化粘合剂的增塑粉末混合物的方法的改进,改进是将挤出物直接接触的附加步骤 在用模具离开模具之后,同时降低粘合剂的凝胶点并使挤出物脱水。 结果是在没有附加步骤的情况下,在比较短的时间内挤出物的硬化。

    Substrate packing for monolith reactors
    6.
    发明授权
    Substrate packing for monolith reactors 失效
    整体式反应堆基材包装

    公开(公告)号:US07182924B2

    公开(公告)日:2007-02-27

    申请号:US09804944

    申请日:2001-03-13

    IPC分类号: C01B17/80

    摘要: An improved method and apparatus is set forth for packaging substrates in a monolith reactor, wherein the substrates are positioned in a stacked relationship along a longitudinal axis of the reactor housing. The stack of substrates is supported in a fixed position at the bottom of the stack, and the upper end of the stack is provided with a predetermined constant compression to not only compensate for different expansions between the stacked substrates and the reactor housing, but also to hold the stacked assemblies together in a tight relationship so as to prevent deleterious vibration of the substrates. The compression is preferably applied by spring-loaded means, which may be adjusted by threading a nut against the loading spring.

    摘要翻译: 阐述了一种改进的方法和装置,用于在整体式反应器中封装衬底,其中衬底沿着反应器壳体的纵向轴线以堆叠关系定位。 基板的堆叠被支撑在堆叠底部的固定位置,并且堆叠的上端被提供有预定的恒定压缩,以不仅补偿堆叠的基板和反应堆壳体之间的不同的膨胀,而且还 将堆叠的组件以紧密的关系保持在一起,以防止衬底的有害振动。 压缩优选地通过弹簧加载装置来施加,该装置可以通过将螺母拧到装载弹簧上来调节。

    Production of porous mullite bodies
    9.
    发明授权
    Production of porous mullite bodies 有权
    生产多孔莫来石体

    公开(公告)号:US06254822B1

    公开(公告)日:2001-07-03

    申请号:US09410248

    申请日:1999-09-30

    申请人: Kevin R. Brundage

    发明人: Kevin R. Brundage

    IPC分类号: B28B320

    摘要: Porous sintered ceramic materials having mullite as its primary phase and a method for producing them. The method includes preparing a plasticizable raw material mixture comprised, by weight, of 75-99% of the mullite powder and 1.0 to 25% of the water swelling clay and 5-25% of the alumina and/or alumina-yielding precursor, adding an organic binder system to the mixture and mixing the mixture to form an extrudable mixture, and extruding the mixture to form a substrate of the desired configuration. The green body is dried and fired for a time and at temperature sufficient to form a sintered mullite structure having an acid/base exposure strength loss of less than about 20%.

    摘要翻译: 具有莫来石作为其主相的多孔烧结陶瓷材料及其制造方法。 该方法包括制备可塑性原料混合物,该混合物包含75-99%的莫来石粉末和1.0-25%的水溶性粘土和5-25%的氧化铝和/或产生氧化铝的前体,加入 将有机粘合剂体系混合到混合物中并混合以形成可挤出的混合物,并挤出混合物以形成所需构型的基材。 将生坯干燥并煅烧一段时间并且在足以形成具有小于约20%的酸/碱暴露强度损失的烧结莫来石结构的温度下。

    Optical fiber draw furnace
    10.
    发明授权
    Optical fiber draw furnace 失效
    光纤拉丝炉

    公开(公告)号:US5410567A

    公开(公告)日:1995-04-25

    申请号:US847756

    申请日:1992-03-05

    摘要: An induction furnace for heating a portion of an optical preform in order to draw an optical fiber therefrom. The furnace includes a tubular susceptor which is disposed centrally within a housing. The electromagnetic field from a high frequency coil surrounding the susceptor is coupled to the susceptor to heat and reflow a portion of the preform. A cellular refractory tubular insulator is located between the coil and the susceptor.

    摘要翻译: 一种用于加热光学预型件的一部分以从其中拉出光纤的感应炉。 炉子包括一个管状基座,它被布置在一个壳体的中心。 围绕基座的高频线圈的电磁场耦合到基座,以加热和回流预制件的一部分。 细胞耐火管状绝缘体位于线圈和基座之间。