Method for making a refractory ceramic material having a high solidus temperature
    67.
    发明授权
    Method for making a refractory ceramic material having a high solidus temperature 有权
    制造具有高固相线温度的耐火陶瓷材料的方法

    公开(公告)号:US08097202B2

    公开(公告)日:2012-01-17

    申请号:US12520736

    申请日:2007-12-21

    IPC分类号: C04B35/482 C04B38/00

    CPC分类号: C04B38/0038 C04B35/482

    摘要: A powder metallurgy process for the manufacture of powders of a refractory ceramic material, comprising the consecutive steps of: (i) obtaining a dry mixture of a hafnium dioxide HfO2 powder and an yttrium oxide Y2O3 powder; (ii) step of granulation by pelletization of the dry mixture under stirring in order to obtain a granulated mixture, this granulation step comprising the spraying, into the dry mixture, of an aqueous solution comprising polyvinyl alcohol (PVA) and polyethylene glycol (PEG); (iii) drying of the granulated mixture; (iv) filling of a mold with said granulated mixture; (v) isostatical or semi-isostatical pressing of the granulated mixture in order to obtain a compact mixture; (vi) sintering of the compact mixture in order to obtain a refractory ceramic material at a solidus temperature in the range between 2500° C. and 2800° C.

    摘要翻译: 一种用于制造耐火陶瓷材料粉末的粉末冶金方法,包括以下连续步骤:(i)获得二氧化铪HfO 2粉末和氧化钇Y 2 O 3粉末的干混合物; (ii)在搅拌下通过干混合物的造粒造粒的步骤,以获得造粒混合物,该造粒步骤包括将包含聚乙烯醇(PVA)和聚乙二醇(PEG)的水溶液喷射到干混合物中, ; (iii)造粒混合物的干燥; (iv)用所述造粒混合物填充模具; (v)等制或半等压挤压造粒混合物以获得紧凑的混合物; (vi)压实混合物的烧结以便在固体温度在2500℃和2800℃之间的范围内获得耐火陶瓷材料。

    Reduction-Oxidation-Tolerant Electrodes for Solid Oxide Fuel Cells
    69.
    发明申请
    Reduction-Oxidation-Tolerant Electrodes for Solid Oxide Fuel Cells 有权
    固体氧化物燃料电池的还原 - 耐氧电极

    公开(公告)号:US20100159356A1

    公开(公告)日:2010-06-24

    申请号:US12640921

    申请日:2009-12-17

    IPC分类号: H01M8/10 B29C67/24

    摘要: An anode component of a solid oxide fuel cell is formed by combining a relatively coarse yttria-stabilized-zirconium (YSZ) powder, that is substantially composed of elongated particles, with a relatively fine NiO/YSZ or NiO powder of reduced particle size, whereby, upon sintering the combined powders, the coarse YSZ powder forms a microstructural cage of open porosity wherein the fine powder is distributed through the open porosity of the cage. A method of forming a cathode component includes combining a coarse YSZ powder, that is substantially composed of elongated particles, with a fine lanthanum strontium manganite powder of reduced particle size, whereby, upon sintering the combined powders, the coarse YSZ powder forms a microstructural cage of open porosity, wherein the fine powder is distributed through the open porosity of the cage.

    摘要翻译: 固体氧化物燃料电池的阳极部件通过将基本上由细长的颗粒组成的较粗的氧化钇稳定的锆(YSZ)粉末与粒径较小的NiO / YSZ或NiO粉末相结合而形成,由此 在烧结组合的粉末时,粗YSZ粉末形成开放孔隙率的微结构保持架,其中细粉末通过保持架的开放孔隙分布。 形成阴极部件的方法包括将粗大的YSZ粉末(其基本上由细长的颗粒组成)与粒径减小的细镧亚锰酸盐粉末组合,由此在烧结组合粉末时,粗YSZ粉末形成微结构笼 的开放孔隙度,其中细粉末通过笼的开放孔隙分布。

    Heat Stable Formed Ceramic, Apparatus And Method Of Using The Same
    70.
    发明申请
    Heat Stable Formed Ceramic, Apparatus And Method Of Using The Same 有权
    热稳定成型陶瓷,设备及其使用方法

    公开(公告)号:US20100126907A1

    公开(公告)日:2010-05-27

    申请号:US12277056

    申请日:2008-11-24

    IPC分类号: C10G11/04 C04B38/00

    摘要: In one aspect, the invention includes a heat stable, formed ceramic component that includes a multimodal grain distribution including (i) at least 50 wt % of coarse grains including stabilized zirconia, the coarse grains comprising a D50 grain size in the range of from 5 to 800 μm, based upon the total weight of the component; and (ii) at least 1 wt % of fine grains comprising a D50 average grain size not greater than one-fourth the D50 grain size of the coarse grain, dispersed within the coarse grains, based upon the total weight of the component; wherein after sintering, the component has porosity at ambient temperature in the range of from 5 to 45 vol. %, based on the formed volume of the component. In other embodiments, the invention includes a process for the manufacture of a hydrocarbon pyrolysis product from a hydrocarbon feed using a regenerative pyrolysis reactor system, comprising the steps of: (a) heating a pyrolysis reactor comprising a bi-modal stabilized zirconia ceramic component to a temperature of at least 1500° C. to create a heated reactive region, wherein after exposing the component to a temperature of at least 1500° C. for two hours the component has a bulk porosity measured at ambient temperature in the range of from 5 to 45 vol. %, based on the bulk volume of the component; (b) feeding a hydrocarbon feed to the heated pyrolysis reactor to pyrolyze the hydrocarbon feed and create a pyrolyzed hydrocarbon feed; and (c) quenching the pyrolyzed hydrocarbon feed to produce the hydrocarbon pyrolysis product.

    摘要翻译: 在一个方面,本发明包括一种热稳定的成形陶瓷组分,其包括多峰晶粒分布,其包括(i)至少50重量%的包含稳定的氧化锆的粗晶粒,所述粗晶粒包含D50晶粒尺寸在5 至800μm,基于组分的总重量; 和(ii)基于组分的总重量,至少1重量%的包含分散在粗晶粒内的D50平均粒径不大于粗晶粒的D50晶粒尺寸的四分之一的细晶粒; 其中烧结后,该组分在环境温度下具有5至45体积%的孔隙率。 %,基于组成的体积。 在其它实施方案中,本发明包括使用再生热解反应器系统从烃进料制造烃热解产物的方法,包括以下步骤:(a)将包含双稳态氧化锆陶瓷组分的热解反应器加热至 至少1500℃的温度以产生加热的反应性区域,其中在将组分暴露于至少1500℃的温度两小时之后,该组分具有在环境温度下测量的体积孔隙,范围为5 至45体积 %,基于组件的批量; (b)将烃进料加入到加热的热解反应器中以使烃进料热解并产生热解的烃进料; 和(c)淬灭热解的烃进料以产生烃热解产物。