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    Zirconia ceramic members with laser induced electrical conductivity in surfaces thereof
    1.
    发明授权
    Zirconia ceramic members with laser induced electrical conductivity in surfaces thereof 失效
    在其表面具有激光诱导电导率的氧化锆陶瓷构件

    公开(公告)号：US5889234A

    公开(公告)日：1999-03-30

    申请号：US754454

    申请日：1996-11-21

    申请人： Syamal K. Ghosh ,  Gregory S. Jarrold ,  Dilip K. Chatterjee ,  David C. Press

    发明人： Syamal K. Ghosh ,  Gregory S. Jarrold ,  Dilip K. Chatterjee ,  David C. Press

    IPC分类号： C04B35/486 ,  C04B41/50 ,  C04B41/87 ,  H05K3/10 ,  H05K1/03

    CPC分类号： C04B41/5042 ,  C04B35/486 ,  C04B41/87 ,  H05K3/105

    摘要： A dielectric member with an integral, electrically conductive surface is made by molding a substrate from a zirconia alloy powder using a tape casting process. The resulting green substrate is sintered and after sintering may be cut to the final desired size and shape. Once the insulating ceramic substrate has been formed, the surface of the substrate is modified using infrared laser energy. Through the impingement of infrared laser radiation upon the surface of the ceramic substrate, an electrically conductive region is produced on the surface of the substrate. In such manner, the entire surface can be made electrically conductive or a particular pattern can be traced. As an integral part of the substrate, the surface will not delaminate from the substrate. Further, because the modified surface region and the substrate are both a zirconia, the coefficients of thermal expansion of the substrate and the modified surface region will be closely matched.

    摘要翻译： 具有整体的导电表面的电介质构件是通过使用带铸造工艺从氧化锆合金粉末模制衬底制成的。 所得到的绿色衬底被烧结并且烧结之后可以被切割成最终期望的尺寸和形状。 一旦形成了绝缘陶瓷基片，就用红外激光能量改变基片的表面。 通过在陶瓷基板的表面上的红外激光辐射的冲击，在基板的表面上产生导电区域。 以这种方式，可以使整个表面导电或者可以追踪特定的图案。 作为衬底的组成部分，表面不会与衬底分层。 此外，由于改性表面区域和基材都是氧化锆，所以基材和改性表面区域的热膨胀系数将紧密匹配。

    Method for inducing electrical conductivity in zirconia ceramic surfaces
    2.
    发明授权
    Method for inducing electrical conductivity in zirconia ceramic surfaces 失效
    在氧化锆陶瓷表面诱导电导率的方法

    公开(公告)号：US5695828A

    公开(公告)日：1997-12-09

    申请号：US754450

    申请日：1996-11-21

    申请人： Syamal K. Ghosh ,  Gregory S. Jarrold ,  Dilip K. Chatterjee ,  David C. Press

    发明人： Syamal K. Ghosh ,  Gregory S. Jarrold ,  Dilip K. Chatterjee ,  David C. Press

    IPC分类号： C04B35/486 ,  C04B41/50 ,  C04B41/87 ,  H05K1/03 ,  H05K3/10 ,  B05D3/00

    CPC分类号： C04B41/009 ,  C04B35/486 ,  C04B41/5042 ,  C04B41/87 ,  H05K3/105 ,  C04B2111/94 ,  H05K1/0306

    摘要： A method for making a dielectric member with an integral, electrically conductive surface is made by molding a substrate from a zirconia alloy powder using a tape casting process. The resulting green substrate is sintered and after sintering may be cut to the final desired size and shape. Once the insulating ceramic substrate has been formed, the surface of the substrate is modified using infrared laser energy. Through the impingement of infrared laser radiation upon the surface of the ceramic substrate, an electrically conductive region is produced on the surface of the substrate. In such manner, the entire surface can be made electrically conductive or a particular pattern can be traced. As an integral part of the substrate, the surface will not delaminate from the substrate. Further, because the modified surface region and the substrate are both a zirconia, the coefficients of thermal expansion of the substrate and the modified surface region will be closely matched.

    摘要翻译： 用于制造具有整体的导电表面的电介质构件的方法是通过使用带铸造工艺从氧化锆合金粉末模制衬底制成的。 所得到的绿色衬底被烧结并且烧结之后可以被切割成最终期望的尺寸和形状。 一旦形成了绝缘陶瓷基片，就用红外激光能量改变基片的表面。 通过在陶瓷基板的表面上的红外激光辐射的冲击，在基板的表面上产生导电区域。 以这种方式，可以使整个表面导电或者可以追踪特定的图案。 作为衬底的组成部分，表面不会与衬底分层。 此外，由于改性表面区域和基材都是氧化锆，所以基材和改性表面区域的热膨胀系数将紧密匹配。

    Zirconia-alumina composite ceramic lithographic printing member
    3.
    发明授权
    Zirconia-alumina composite ceramic lithographic printing member 失效
    氧化锆 - 氧化铝复合陶瓷平版印刷部件

    公开(公告)号：US5836248A

    公开(公告)日：1998-11-17

    申请号：US850315

    申请日：1997-05-01

    申请人： Gregory S. Jarrold ,  Dilip K. Chatterjee ,  Syamal K. Ghosh

    发明人： Gregory S. Jarrold ,  Dilip K. Chatterjee ,  Syamal K. Ghosh

    IPC分类号： B41C1/10 ,  B41N1/00 ,  B41N1/14

    CPC分类号： B41N1/006 ,  B41C1/1041

    摘要： Long wearing and reusable lithographic printing members are prepared from a ceramic that is a composite of a zirconia alloy and .alpha.-alumina. In use, a surface of the zirconia-alumina composite ceramic printing member is imagewise exposed to electromagnetic radiation which transforms it from a hydrophilic to an oleophilic state or from an oleophilic to a hydrophilic state, thereby creating a lithographic printing surface which is hydrophilic in non-image areas and is oleophilic and thus capable of accepting printing ink in image areas. Such inked areas can then be used to transfer an image to a suitable substrate in lithographic printing. These printing members are directly laser-imageable as well as image erasable.

    摘要翻译： 长磨损和可再利用的平版印刷构件由氧化锆合金和α-氧化铝的复合材料制成。 在使用中，氧化锆 - 氧化铝复合陶瓷印刷部件的表面被成像地暴露于电磁辐射，其将其从亲水性状态转变为亲油性状态或从亲油性转变为亲水状态，从而产生非平版印刷表面， - 图像区域，并且是亲油的，因此能够在图像区域中接受印刷油墨。 然后可以使用这样的油墨区域在平版印刷中将图像转印到合适的基底上。 这些印刷部件直接可激光成像，图像可擦除。

    Method of making core shell structured articles based on alumina ceramics having spinel surfaces
    5.
    发明授权
    Method of making core shell structured articles based on alumina ceramics having spinel surfaces 失效
    基于具有尖晶石表面的氧化铝陶瓷制造芯壳结构制品的方法

    公开(公告)号：US5683481A

    公开(公告)日：1997-11-04

    申请号：US700256

    申请日：1996-08-20

    申请人： Dilip K. Chatterjee ,  Syamal K. Ghosh ,  Gregory S. Jarrold

    发明人： Dilip K. Chatterjee ,  Syamal K. Ghosh ,  Gregory S. Jarrold

    IPC分类号： C04B35/10 ,  C04B35/119 ,  C04B35/64 ,  C04B41/50 ,  C04B41/87 ,  C03B19/01 ,  C03B19/09 ,  C04B33/34 ,  C04B33/36

    CPC分类号： C04B41/009 ,  C04B35/119 ,  C04B35/64 ,  C04B41/5046 ,  C04B41/87 ,  C04B2111/0025

    摘要： An alumina ceramic article and a method for preparing the article. The method comprises the steps of: (1) Compacting a mixture of a first concentration of particulate aluminum oxide sufficient to prevent retention of the zirconium oxide alloy particles in the shell in a predominantly tetragonal crystal structure and a second concentration of particulate zirconium oxide alloy. The zirconium oxide alloy is zirconium oxide and a secondary oxide selected from the group consisting of MgO, CaO, Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, CeO.sub.2, and rare earth oxides having a concentration of secondary oxide generally of about 0.5 to about 5 mole percent Y.sub.2 O.sub.3, from about 0.1 to about 1 mole percent MgO, from about 0.5 to about 15 mole percent CeO.sub.2, from about 0.5 to about 7.0 mole percent Sc.sub.2 O.sub.3, or from about 0.5 to about 5 mole percent CaO, relative to the total of the zirconium oxide alloy. The compacting results in the formation of a blank.(2) Providing contact between the blank and a dopant oxide. (3) Sintering the blank in contact with the dopant oxide wherein said first concentration is from 50-75 weight percent of the total of the first and second concentrations.

    摘要翻译： 一种氧化铝陶瓷制品及其制备方法。 该方法包括以下步骤：（1）将第一浓度的微粒氧化铝的混合物压实成足以防止氧化锆合金颗粒以主要为四方晶体结构和第二浓度的颗粒状氧化锆合金在壳中的保留。 氧化锆合金是氧化锆和选自MgO，CaO，Y 2 O 3，Sc 2 O 3，CeO 2的二次氧化物和二氧化硫浓度通常为约0.5〜约5摩尔％Y 2 O 3的稀土氧化物，从约 0.1至约1摩尔％的MgO，约0.5至约15摩尔％的CeO 2，约0.5至约7.0摩尔％的Sc 2 O 3，或约0.5至约5摩尔％的CaO，相对于氧化锆合金的总量。 压实导致形成空白。 （2）提供坯料与掺杂剂氧化物之间的接触。 （3）烧结坯料与掺杂剂氧化物接触，其中所述第一浓度为第一和第二浓度总量的50-75重量％。