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    Fabrication of ultra-thinwall cordierite structures
    5.
    发明授权
    Fabrication of ultra-thinwall cordierite structures 有权
    超薄壁堇青石结构的制作

    公开(公告)号：US06506336B1

    公开(公告)日：2003-01-14

    申请号：US09651932

    申请日：2000-08-31

    申请人： Douglas M. Beall ,  Gregory A. Merkel

    发明人： Douglas M. Beall ,  Gregory A. Merkel

    IPC分类号： B28B320

    CPC分类号： C04B35/195 ,  C04B38/0006 ,  C04B2111/00129 ,  C04B2111/0081 ,  C04B2235/3217 ,  C04B2235/3218 ,  C04B2235/3418 ,  C04B2235/3445 ,  C04B2235/349 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/77 ,  C04B2235/9607 ,  C04B2235/9615

    摘要： A plasticizable raw material mixture for use in preparing a substrate having cordierite as its primary phase with a mixture of a chemical composition, percent by weight, of 11 to 17% MgO, 33 to 41% Al2O3 and, 46 to 53% SiO2, the mixture including the following (1) a platy talc having a morphology index of greater than 0.8 and exhibiting a mean particle size of less than about 5 &mgr;m; (2) an Al2O3 forming source comprising an alumina having a mean particle size of less than about 5 &mgr;m selected from the group consisting of ∝-alumina, transition aluminas, aluminum oxide monohydroxide, or aluminum trihydrate having; and, (3) one or more of the components of delaminated kaolin having a mean particle size of less than about 2 &mgr;m, calcined kaolin exhibiting a mean particle size of less than about 2 &mgr;m and a surface area of greater than about 10 m2/g and/or silica having a mean particle size of less than about 5 &mgr;m., and a method of producing a green body by compounding and plasticizing a cordierite-forming raw material mixture, forming the mixture into a green ceramic body by extrusion through an extrusion die to at least partially align the raw materials in an orientation plane in such a manner that the shrinkage of the green ceramic body upon firing is anisotropic and is greater in direction perpendicular to the orientation plane than in at least one other direction in the green ceramic body.

    摘要翻译： 一种可塑化的原料混合物，用于制备具有堇青石作为主相的基材，其组成为化学组成，重量百分比为11至17％的MgO，33至41％的Al2O3和46至53％的SiO2， 包括以下（1）形态指数大于0.8并且平均粒径小于约5μm的板状滑石; （2）Al 2 O 3形成源，其包含平均粒度小于约5μm的氧化铝，其选自丙氧基铝，过渡氧化铝，氧化铝一氢氧化物或三水合铝，其具有： 和（3）平均粒径小于约2μm的分层高岭土的一种或多种组分，煅烧高岭土的平均粒径小于约2μm，表面积大于约10m 2 / g和/或二氧化硅，以及通过将堇青石形成原料混合物进行配混和塑化来生产生坯的方法，通过挤出法将该混合物形成生坯陶瓷体 挤出模具，以使得原料在取向平面中至少部分地对准，使得烧成时的生坯陶瓷体的收缩是各向异性的，并且在垂直于取向平面的方向上比在绿色中的至少一个其它方向上的方向更大 陶瓷体。

    Cordierite structures
    6.
    发明授权
    Cordierite structures 有权
    堇青石结构

    公开(公告)号：US06300266B1

    公开(公告)日：2001-10-09

    申请号：US09354813

    申请日：1999-07-16

    申请人： Douglas M. Beall ,  Devi Chalasani

    发明人： Douglas M. Beall ,  Devi Chalasani

    IPC分类号： C04B3504

    CPC分类号： B01J37/0018 ,  B01J21/14 ,  B01J32/00 ,  B01J35/04 ,  C04B35/195 ,  C04B38/0006 ,  C04B2111/00129 ,  C04B2111/0081 ,  F01N3/2825

    摘要： A plasticizable raw material mixture for use in preparing a substrate having cordierite as its primary phase with the mixture comprised of a chemical composition, percent by weight, of 11 to 17% MgO, 33 to 41% Al2O3 and, 46 to 53% SiO2. The raw material mixture specifically comprises the following: (1) one source of Al2O3 and SiO2 comprising a clay mixture having less than about 22%, by weight based on the total raw materials in the plasticizable mixture, of calcined clay; (2) an alumina yielding precursor comprising alumina having an average particle diameter of about 1 &mgr;m or less; and, (3) at least one source of magnesia having an average particle diameter of between about 3 to 15 microns. This invention additionally relates to a method of producing a green body of cordierite-forming materials comprising preparing a plasticizable raw material mixture of the aforementioned composition, 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 to yield a ceramic substrate having cordierite as its primary phase.

    摘要翻译： 一种可塑化的原料混合物，用于制备具有堇青石作为其主相的基材，混合物由化学组成，重量百分比为11至17％的MgO，33至41％的Al2O3和46至53％的SiO2组成。 原料混合物具体包括：（1）一种Al 2 O 3和SiO 2源，其包含基于可塑化混合物中的总原料的小于约22重量％的煅烧粘土的粘土混合物; （2）具有平均粒径为约1μm或更小的氧化铝的氧化铝产生前体; 和（3）至少一种平均粒径在约3至15微米之间的氧化镁源。 本发明还涉及一种生产堇青石形成材料的生坯的方法，包括制备上述组合物的可塑性原料混合物，向混合物中加入有机粘合剂体系，并将混合物混合形成可挤出混合物，并挤出 混合物以形成所需配置的底物。 将生坯干燥并焙烧，得到具有堇青石作为其主相的陶瓷基材。

    Binder system for honeycomb ceramic bodies and a method for producing said honeycomb bodies
    7.
    发明授权
    Binder system for honeycomb ceramic bodies and a method for producing said honeycomb bodies 有权
    蜂窝陶瓷体用粘合剂体系及其制造方法

    公开(公告)号：US06299678B1

    公开(公告)日：2001-10-09

    申请号：US09735775

    申请日：2000-12-13

    申请人： Douglas M. Beall ,  Devi Chalasani

    发明人： Douglas M. Beall ,  Devi Chalasani

    IPC分类号： C04B3563

    CPC分类号： C04B35/63408 ,  C04B35/195 ,  C04B35/632 ,  C04B35/634 ,  C04B35/63496 ,  C04B35/6365 ,  C04B38/0006 ,  C04B2111/00129 ,  C09J101/28

    摘要： A binder system for use in the formation of ceramic or other powder-formed greenware comprising a binder, a solvent for the binder, a surfactant, and a component that is non-solvent with respect to the binder and solvent. The non-solvent component exhibits a lower viscosity than the solvent when containing the binder and comprises at least a portion of a branched chain paraffin exhibiting a 90% recovered distillation temperature ranging between 205° C. to about 225° C. and a carbon chain length comprised predominantly of carbon chain distributions ranging from 12 to 14. Also disclosed is a process of forming and shaping plasticized powder mixtures and a process for forming ceramic articles utilizing the binder system.

    摘要翻译： 用于形成陶瓷或其它粉末形式的绿色软化剂的粘合剂体系，其包含粘合剂，粘合剂的溶剂，表面活性剂和相对于粘合剂和溶剂为非溶剂的组分。 当含有粘合剂时，非溶剂组分显示比溶剂低的粘度，并且包含至少一部分支链链烷烃，其呈现在205℃至225℃之间的90％回收蒸馏温度和碳链 主要由12至14的碳链分布组成的长度。还公开了一种使增塑粉末混合物形成和成型的方法以及利用该粘合剂体系形成陶瓷制品的方法。

    Low CTE-low porosity cordierite bodies and method of making same
    8.
    发明授权
    Low CTE-low porosity cordierite bodies and method of making same 失效
    低CTE低孔隙堇青石体及其制备方法

    公开(公告)号：US6077796A

    公开(公告)日：2000-06-20

    申请号：US197266

    申请日：1998-11-20

    申请人： Douglas M. Beall ,  Gregory A. Merkel

    发明人： Douglas M. Beall ,  Gregory A. Merkel

    IPC分类号： C04B35/195

    CPC分类号： C04B35/195

    摘要： Low expansion, low porosity cordierite bodies having a CTE at 25-800.degree. C. of 4.times.10-7C-1 but 9.times.10-7C-1 but

    摘要翻译： 低膨胀率，低孔径堇青石体，在25-800℃的CTE为<4×10 -7 C -1，总孔隙率为<20％，或CTE为> 4×10 -7℃-1但<9×10 -7℃-1和总 孔隙度<12％，CTE> 9×10 -7 C -1但<15×10 -7 C -1，总孔隙率<10％。 它们通过以各种粒径组合选择滑石，尖晶石，高岭土，煅烧高岭土，Al 2 O 3形成材料，MgO形成材料和二氧化硅的特定组合来选择堇青石形成原料。 将原料与有效量的载体和成型助剂密切混合，并塑化成生坯，在约1370℃至1435℃的温度下干燥和烧制。焙烧时间表根据原料组合而变化。

    Binder system for honeycomb ceramic bodies and a method for producing said honeycomb bodies
    10.
    发明授权
    Binder system for honeycomb ceramic bodies and a method for producing said honeycomb bodies 有权
    蜂窝陶瓷体用粘合剂体系及其制造方法

    公开(公告)号：US06344078B1

    公开(公告)日：2002-02-05

    申请号：US09605296

    申请日：2000-06-28

    申请人： Douglas M. Beall ,  Devi Chalasani ,  Ronald E. Johnson

    发明人： Douglas M. Beall ,  Devi Chalasani ,  Ronald E. Johnson

    IPC分类号： C04B35632

    CPC分类号： C04B35/195 ,  C04B35/632

    摘要： A binder system for use in the formation of ceramic or other powder-formed greenware comprising a binder, a solvent for the binder, a surfactant, and a component that is non-solvent with respect to the binder and solvent. The non-solvent component exhibits a lower viscosity than the solvent when containing the binder and comprises at least a portion of an organic liquid having a 90% recovered distillation temperature of no greater than about 225° C. and more preferably less than 220° C. Also disclosed is a process of forming and shaping plasticized powder mixtures and a process for forming ceramic articles utilizing the binder system.

    摘要翻译： 用于形成陶瓷或其它粉末形式的绿色软化剂的粘合剂体系，其包含粘合剂，粘合剂的溶剂，表面活性剂和相对于粘合剂和溶剂为非溶剂的组分。 非溶剂组分在含有粘合剂时表现出比溶剂低的粘度，并且包含至少一部分有90％回收蒸馏温度不大于约225℃，更优选小于220℃的有机液体 还公开了一种使增塑粉末混合物形成和成型的方法以及利用该粘合剂体系形成陶瓷制品的方法。