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    IMPROVED METHOD OF ELECTROPHORETIC DEPOSITION OF FERROELECTRIC FILMS USING A TRI-FUNCTIONAL ADDITIVE AND COMPOSITIONS FOR EFFECTING SAME
    116.
    发明公开
    IMPROVED METHOD OF ELECTROPHORETIC DEPOSITION OF FERROELECTRIC FILMS USING A TRI-FUNCTIONAL ADDITIVE AND COMPOSITIONS FOR EFFECTING SAME 审中-公开
    改进方法电泳沉积FERRO电动MOVIES使用TRI-功能性添加剂和组合物对于这种应用

    公开(公告)号：EP1259660A4

    公开(公告)日：2006-09-13

    申请号：EP00971675

    申请日：2000-10-25

    申请人： CEREL CERAMIC TECHNOLOGIES LTD

    发明人： GAL-OR LEAH ,  GOLDNER RONI ,  SEZIN NINA ,  PISMANY ALA ,  BRANDON DAVID

    IPC分类号： C25D13/02 ,  H01L41/24

    CPC分类号： C25D13/02 ,  H01L41/317 ,  H01L41/43

    摘要： An improved method for depositing ferroelectric particles on a surface of a substrate to form films or stand-alone bodies. The improvement is based on electrophoretic deposition (EPD) of ferroelectric films by using a tri-functional phosphate ester additive having a concentration less than 10 volume percent in the EPD suspension, without the need for addition of a binder. The method includes preparation of the suspension by washing and dispersing ferroelectric particles, for example, commercially available PZT powder, in a polar solvent such as ethanol, followed by addition of the phosphate ester additive to the suspension, and an ultrasound treatment. The suspension is used in EPD of the ferroelectric particles on a prepared substrate. Following EPD, the green film is dried and sintered at high temperature. Visual and physical examination of stand alone and patterned PZT deposited films show excellent quality obtained in manufacturing a diversity of piezoelectric products, featuring exceptionally high green film uniformity, thickness distribution, and reproducibility to within ± 2 microns for 20 micrometer film thickness. The phosphate ester additive functions by improving stabilization and control of suspension characteristics and properties during the electrophoretic migration process, and by improving desired dimensions, characteristics, and electrical properties of the deposited green film. Thin or thick ferroelectric films, either as stand alone products, or formed on geometrically demanding patterned or non-patterned substrates are produced by using the method. The improved method is applicable to different ferroelectric particulate materials and to different substrates used for manufacturing piezoelectric elements and devices, in a cost effective manner.

    ELEKTROPHORETISCHES VERFAHREN ZUR HERSTELLUNG VON KERAMISCHEN STRUKTUREN
    117.
    发明公开
    ELEKTROPHORETISCHES VERFAHREN ZUR HERSTELLUNG VON KERAMISCHEN STRUKTUREN 有权
    电泳法用于生产陶瓷结构

    公开(公告)号：EP1654404A1

    公开(公告)日：2006-05-10

    申请号：EP04741370.3

    申请日：2004-08-05

    申请人： Forschungszentrum Karlsruhe GmbH

    发明人： HAUSSELT, Jürgen ,  DAUSCHER, Melanie ,  VON BOTH, Holger

    IPC分类号： C25D13/02

    CPC分类号： C25D13/02

    摘要： The invention relates to a method for producing ceramic structures and gradient structures whose particle size distribution has at least partly smaller values than the particle size distribution of the suspension from which the same are produced. According to the inventive method, a suspension containing ceramic particles is provided between a couple of electrodes, whereupon an electric field is applied to the couple of electrodes while the electrode surfaces of the couple of electrodes are placed perpendicular to a component of a gravitational field such that a fraction of the particles is deposited on the electrode of the couple of electrodes, which is located upstream of the component of the gravitational field, in the form of a ceramic structure.

    METHOD OF ELECTROPHORETIC DEPOSITION OF CERAMIC BODIES FOR USE IN MANUFACTURING DENTAL APPLIANCES
    118.
    发明授权
    METHOD OF ELECTROPHORETIC DEPOSITION OF CERAMIC BODIES FOR USE IN MANUFACTURING DENTAL APPLIANCES 有权
    电泳涂膜参与制造牙科产品陶瓷体的方法中使用

    公开(公告)号：EP1073781B1

    公开(公告)日：2005-06-08

    申请号：EP99911422.6

    申请日：1999-03-16

    申请人： Cerel (Ceramic Technologies) Ltd.

    发明人： GAL-OR, Leah ,  GOLDNER, Roni ,  CHERNIAK, Liudmila ,  SEZIN, Nina ,  LIUBOVICH, Sonia

    IPC分类号： C25D13/02 ,  C25D1/14 ,  A61C13/00

    CPC分类号： A61C13/001 ,  A61C5/77 ,  A61C13/0022 ,  C25D1/14 ,  C25D13/02 ,  H05K1/0306 ,  H05K3/022

    摘要： A method for electrophoretic deposition of ceramic particles as a green body shaped as a dental appliance, the method comprising the steps of (a) forming a suspension of the ceramic particles in a first polar solvent, the ceramic particles constituting at least about 5 % of the first suspension by weight; (b) passing a direct electrical current through the first suspension, using a deposition electrode (20) shaped as the dental appliance to form a green body; (c) coating the green body with glass particles; and (d) sintering the resultant coated body for obtaining a glass coated all-ceramic dental appliance.

    摘要翻译： 一种用于陶瓷粒子的电泳沉积，成形为牙科器具生坯的方法，该方法包括以下步骤：（a）在第一极性溶剂中形成的悬浮液的陶瓷颗粒的，该陶瓷颗粒构成至少约5％的 第一悬浮液（重量）; （B）使直流电流通过所述第一悬浮液中，使用成形为牙科器具以形成生坯的沉积电极（20）; （C）涂覆生坯玻璃颗粒; 和（d）烧结所得涂装体，用于获得涂覆全瓷牙科器具的玻璃。