公开(公告)号：EP1915765A1

公开(公告)日：2008-04-30

申请号：EP06776736.8

申请日：2006-08-10

申请人： Umicore AG & Co. KG

发明人： KEMPF, Bernd ,  WOLMER, Roger ,  BOEHME, Carsten ,  ROTH, Werner ,  KOFFLER, Andreas

IPC分类号： H01H1/027 ,  B22F1/02

CPC分类号： C22C32/0084 ,  B22F2998/10 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/15 ,  H01H1/027 ,  Y10T428/2991 ,  H01B1/04 ,  B22F1/025 ,  B22F3/04 ,  B22F3/10 ,  B22F3/18

摘要： The invention relates to a method for producing a silver/carbon-based material, comprising the following steps: (i) providing a carbon particle suspension; and (ii) adding a solution from a silver compound and a reducing agent so that a silver-containing precipitate is deposited onto the carbon particles, the carbon particles having an average diameter of 200 nm or more. The invention also relates to materials obtained by this method, and to the use of the materials in protective switches for low-voltage power engineering.

公开(公告)号：EP2004349A2

公开(公告)日：2008-12-24

申请号：EP07723733.7

申请日：2007-03-29

申请人： Umicore AG & Co. KG

发明人： GOIA, Dan, V. ,  KEMPF, Bernd ,  FALLHERR, Inge ,  WOLMER, Roger ,  KOFFLER, Andreas

IPC分类号： B22F9/04 ,  H01H1/0237 ,  H01H11/04

CPC分类号： B22F9/04 ,  B22F2009/042 ,  B22F2998/10 ,  H01H1/0237 ,  B22F9/30

摘要： The present invention relates to a method for manufacture of silver-based composite powders for electrical contact materials. The invention relates also to electrical contact materials made from such composite powders. The process comprises a high energy dispersing process of wet silver oxide (Ag2O) with additional second oxide components in aqueous suspension. The high energy dispersing process can be conducted by high shear mixing or by high energy milling. Preferably high speed dispersing units working at rotating speeds in the range of 5,000 to 30,000 rpm or high energy mills such as attritor mills are used. The new process is versatile, economical and offers access to a broad spectrum of contact materials. The silver-based composite powders made according to the new process yield contact materials with highly dispersed microstructures and superior material characteristics.

摘要翻译： 本发明涉及一种用于制造银基复合粉末用于电接触材料的方法。 本发明涉及从复合寻求粉末制成因此，为了电接触材料。 该方法包括一个高能量的分散湿氧化银（银2 O）与wässrige悬浮附加的第二氧化物组分的过程。 高能量的分散过程可以通过高剪切混合或通过高能研磨进行。 优选高速分散装置在5000〜30,000 rpm或高能量研磨机的范围内转速工作：如磨碎机被使用。 新工艺是通用的，经济的，并提供了接触材料的广谱访问。 雅丁作出到新的工艺产率的接触材料具有高度分散的微结构和优异的材料特性的银基复合粉末。

公开(公告)号：EP1915765B1

公开(公告)日：2010-08-04

申请号：EP06776736.8

申请日：2006-08-10

申请人： Umicore AG & Co. KG

发明人： KEMPF, Bernd ,  WOLMER, Roger ,  BOEHME, Carsten ,  ROTH, Werner ,  KOFFLER, Andreas

IPC分类号： H01H1/027 ,  B22F1/02

CPC分类号： C22C32/0084 ,  B22F2998/10 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/15 ,  H01H1/027 ,  Y10T428/2991 ,  H01B1/04 ,  B22F1/025 ,  B22F3/04 ,  B22F3/10 ,  B22F3/18

摘要： The invention relates to a method for producing a silver/carbon-based material, comprising the following steps: (i) providing a carbon particle suspension; and (ii) adding a solution from a silver compound and a reducing agent so that a silver-containing precipitate is deposited onto the carbon particles, the carbon particles having an average diameter of 200 nm or more. The invention also relates to materials obtained by this method, and to the use of the materials in protective switches for low-voltage power engineering.