公开(公告)号：US5890941A

公开(公告)日：1999-04-06

申请号：US824025

申请日：1997-03-25

申请人： Jacobus A.J.M. Deckers ,  Theodorus H. Weekers ,  Albert Manenschijn ,  Franciscus M.M. Snijkers ,  Petrus A.M. Van Der Heide

发明人： Jacobus A.J.M. Deckers ,  Theodorus H. Weekers ,  Albert Manenschijn ,  Franciscus M.M. Snijkers ,  Petrus A.M. Van Der Heide

IPC分类号： H01J1/28 ,  H01J9/04

CPC分类号： H01J9/047 ,  H01J1/28 ,  H01J2201/2892

摘要： A method of manufacturing a dispenser cathode, in which method a powder of a refractory metal and a scandium-containing powder are mixed with each other and pressed to form a cathode body. According to the invention at least both these powders and a suitable binder are mixed with each other to form a homogeneous suspension prior to the pressing operation and the whole mixture is subsequently cured and ground to granules having a larger average size and hence a greater fluidity than the grains of the starting powders. Subsequently the granules thus obtained are pressed to form a cathode body (2). The invention leads to a better processibility and greater convenience of handling of the starting powders so that notably very fine staring powders can be used, which results in cathodes (1) having a better recovery after ion bombardment as compared with cathodes manufactured in conventional manners which are necessarily based on relatively coarse powders.

摘要翻译： 一种制造分配器阴极的方法，其中将难熔金属和含钪粉末的粉末彼此混合并压制以形成阴极体。 根据本发明，至少将这两种粉末和合适的粘合剂彼此混合以在压制操作之前形成均匀的悬浮液，然后将整个混合物固化并研磨成具有较大平均尺寸的颗粒，因此流动性大于 起始粉末的颗粒。 随后将由此获得的颗粒压制以形成阴极体（2）。 本发明导致更好的加工性和更好的处理起始粉末的方便性，使得可以使用显着非常精细的起始粉末，这导致与以常规方法制造的阴极相比，在离子轰击之后具有更好恢复的阴极（1），其中 必须基于较粗的粉末。