公开(公告)号：US20050218380A1

公开(公告)日：2005-10-06

申请号：US11086907

申请日：2005-03-23

申请人： Hansjoerg Gramespacher ,  Michael Hagemeister ,  Petra Kluge-Weiss ,  Felix Greuter ,  Lise Donzel ,  Reto Kessler

发明人： Hansjoerg Gramespacher ,  Michael Hagemeister ,  Petra Kluge-Weiss ,  Felix Greuter ,  Lise Donzel ,  Reto Kessler

IPC分类号： C04B14/04 ,  H01C7/00 ,  H01C7/10 ,  H01C7/112 ,  H01C17/065

CPC分类号： B82Y30/00 ,  H01C7/1006 ,  H01C7/112 ,  H01C17/06546 ,  H01C17/06586

摘要： The invention relates to a nonlinear electrical material with improved microvaristor filler (1′), to devices and electrical apparatuses comprising such nonlinear electrical material and to a production method thereof. According to invention, the filler (1′) comprises larger spherical particles (5) and smaller irregular particles (6) that are arranged interstitially and provide non-point-like and/or multiple contact areas (56, 56a, 56b, 66) owing to their irregular outer shape comprising edges and faces. Embodiments, among other things, relate to: spherical particles (5) being calcinated and broken-up to retain their original shape; irregular, spikly shaped, particles (6) obtained by calcinating or sintering and crushing or fracturing granules or blocks; and addition of a third filler fraction. Advantages, among others, are: higher filler contents, more and more durable inter-particle contacts (56, 56a, 56b, 66), enlarged effective micro-contact area, and improved electrical performance of the nonlinear electrical material.

摘要翻译： 本发明涉及具有改进的微电阻填料（1'）的非线性电气材料，涉及包含这种非线性电气材料的装置和电气设备及其制造方法。 根据本发明，填料（1'）包括较大的球形颗粒（5）和较小的不规则颗粒（6），它们间隙布置并提供非点状和/或多个接触区域（56,56a，56b， 由于其不规则的外形包括边缘和面部。 实施例尤其涉及：球形颗粒（5）被煅烧和分解以保持其原始形状; 通过煅烧或烧结获得的颗粒（6），破碎或压碎颗粒或块; 并加入第三填料部分。 优点包括：较高的填料含量，越来越耐用的颗粒间接触（56,56a，56b，66），扩大的有效微接触面积和改善的非线性电气材料的电性能。

公开(公告)号：US20050016969A1

公开(公告)日：2005-01-27

申请号：US10885877

申请日：2004-07-08

申请人： Reto Kessler ,  Felix Greuter ,  Michael Hagemeister

发明人： Reto Kessler ,  Felix Greuter ,  Michael Hagemeister

IPC分类号： C04B41/51 ,  C04B41/88 ,  C23C4/02 ,  H01C7/10 ,  H01C7/108 ,  H01C17/00 ,  H01G4/12 ,  H01G13/00 ,  B23K26/00 ,  H01L21/00 ,  H01L21/20

CPC分类号： C04B41/009 ,  C04B41/51 ,  C04B41/88 ,  C04B2111/00844 ,  H01C7/108 ,  Y10T29/413 ,  Y10T29/49082 ,  C04B41/0036 ,  C04B41/53 ,  C04B35/00

摘要： The manufacturing method for an electroceramic component (1), for example a varistor (1), comprises a laser irradiation of a part (5; 6) of the surface of an electroceramic body (2) before a metallization (3; 4) is applied to the part (5; 6) of the surface. By means of the laser irradiation it is possible to produce a micro-roughness and/or a chemical modification of the surface which permits good adhesion of the metallization, and it is possible to reduce or eliminate areas of unevenness or waviness of that part (5; 6) of the surface of the electroceramic body (2) which is to be metallized. In addition, improved transverse conductivity can be produced, by virtue of which a low contact resistance and a very homogeneous current distribution is achieved, in particular near to the metallization (3; 4). In addition it is possible to remove residues which originate in particular from a sinter support or from the application of a passivation layer. After the laser irradiation, the electroceramic body advantageously has a border (9) which adjoins the part (5; 6) of the surface and which is not laser-irradiated. The laser beam can advantageously be pulsed and focused.

摘要翻译： 用于电瓷部件（1）的制造方法，例如变阻器（1）包括在金属化（3; 4）之前的电陶瓷体（2）的表面的部分（5; 6）的激光照射 施加到表面的部分（5; 6）上。 通过激光照射，可以产生表面的微观粗糙度和/或化学改性，其允许金属化的良好粘合，并且可以减少或消除该部分的不均匀或波纹的区域（5 ; 6）要被金属化的电陶瓷体（2）的表面。 此外，可以产生改善的横向电导率，由此实现了低接触电阻和非常均匀的电流分布，特别是在金属化（3; 4）附近。 此外，可以除去特别是由烧结体支持体产生的残留物，或者去除钝化层的残留物。 在激光照射之后，电陶瓷体有利地具有与表面的部分（5; 6）相邻并且不被激光照射的边界（9）。 激光束可以有利地被脉冲和聚焦。