公开(公告)号：US5093186A

公开(公告)日：1992-03-03

申请号：US584641

申请日：1990-09-19

申请人： Yukihiro Kimura ,  Nobuhiko Miyawaki ,  Sumihito Tominaga ,  Rokuro Kanbe

发明人： Yukihiro Kimura ,  Nobuhiko Miyawaki ,  Sumihito Tominaga ,  Rokuro Kanbe

IPC分类号： H05K3/46 ,  H05K1/02 ,  H05K1/03 ,  H05K1/09 ,  H05K3/40

CPC分类号： H05K1/0271 ,  H05K3/4061 ,  H05K1/0306 ,  H05K1/092 ,  H05K2201/0269 ,  H05K2201/068 ,  H05K3/4611 ,  H05K3/4629 ,  Y10S428/901 ,  Y10T428/24917

摘要： A multilayer ceramic wiring board including a ceramic board having a plurality of through-holes and formed by laminating three or more green sheets of a ceramic material and burning a laminate of the green sheets, and a plurality of conductors provided in the through-holes. Each of the conductors is formed of a ceramic material and a conductive material in combination. The ceramic board is composed of a pair of upper and lower layer portions each having at least an outermost surface layer and an inner layer portion disposed between the upper and lower portions. The conductors are composed of an outer conductor portion formed in the upper and lower layer portions and an inner conductor portion formed in the inner layer portion. The outer conductor portion has a content ratio of the ceramic material higher than that of the inner conductor portion. Accordingly, the generation of cracks in the outer conductor portion disposed at the upper and lower layer portions of the ceramic board can be prevented, and an electric resistance can be reduced.

摘要翻译： 一种多层陶瓷布线板，包括具有多个通孔的陶瓷板，并且通过层叠三种或更多种陶瓷材料的生片并烧制生片的层压体，以及设置在通孔中的多个导体。 每个导体由陶瓷材料和导电材料组合形成。 陶瓷板由一对上下层部分组成，每一层至少具有最外表面层和设置在上部和下部之间的内层部分。 导体由形成在上层部和下层部中的外部导体部和形成在内层部的内部导体部构成。 外导体部分的陶瓷材料的含量比高于内导体部分的含量比。 因此，可以防止在布置在陶瓷板的上层和下层部分的外导体部分中产生裂纹，并且可以降低电阻。

公开(公告)号：US5250244A

公开(公告)日：1993-10-05

申请号：US911782

申请日：1992-07-10

申请人： Yukihiro Kimura ,  Sumihito Tominaga ,  Rokuro Kanbe

发明人： Yukihiro Kimura ,  Sumihito Tominaga ,  Rokuro Kanbe

IPC分类号： C04B35/111 ,  C04B35/185 ,  C04B35/622 ,  C04B35/64

CPC分类号： C04B35/622 ,  C04B35/111 ,  C04B35/185

摘要： A method of producing a sintered body by molding a mixture of a ceramic base powder, a sintering assistant powder and an organic binder and sintering the molded body in a non-oxidizing atmosphere is disclosed in which the ceramic base powder has such a particle size distribution that the amount of powder particles not greater than 1.0 .mu.m in size is not more than 15% by weight and the average particle diameter is not greater than 5 .mu.m. According to the method, therefore, sufficient passage of gas is secured in a degreasing step, resulting in an enhanced degreasing efficiency and exellent sintering properties. Where the sintering assistant powder has such a particle size distribution that the amount of powder particles not greater than 10 .mu.m in size is not more than 5% by weight, the amount of coarse powder is extremely small and, therefore, large voids are not formed. It is thus possible to produce easily a high-quality sintered body by controlling the respective particle size distributions of the powders.

摘要翻译： 公开了一种通过模制陶瓷基底粉末，烧结辅助粉末和有机粘合剂的混合物并在非氧化性气氛中烧结成型体来制造烧结体的方法，其中陶瓷基础粉末具有这样的粒度分布 不大于1.0μm的粉末颗粒的量不大于15重量％，平均粒径不大于5μm。 因此，根据该方法，在脱脂工序中确保充分的气体通过，从而提高脱脂效率和良好的烧结性能。 当烧结辅助粉末具有这样的粒度分布，其尺寸不大于10微米的粉末颗粒的量不大于5重量％时，粗粉末的量非常小，因此，大的空隙不是 形成。 因此，通过控制粉末的各自的粒度分布，可以容易地制造高品质的烧结体。