公开(公告)号：US4026811A

公开(公告)日：1977-05-31

申请号：US545462

申请日：1975-01-30

申请人： Dennis W. Readey ,  Edward A. Maguire, Jr. ,  Albert E. Paladino

发明人： Dennis W. Readey ,  Edward A. Maguire, Jr. ,  Albert E. Paladino

IPC分类号： C01G23/00 ,  H01B3/12 ,  H01B3/00

CPC分类号： H01B3/12 ,  C01G23/003 ,  C01G23/005 ,  C01G23/006 ,  C01P2002/76 ,  C01P2004/82 ,  C01P2006/10

摘要： A group of dielectric compounds and mixtures of dielectric compounds with useful properties at microwave frequencies is disclosed. The dielectric materials are temperature compensated, have relatively high dielectric constants, and comprise the group of BaTi.sub.4 O.sub.9, and mixtures of Li.sub.2 TiO.sub.3 and Li.sub.4 Ti.sub.5 O.sub.12, MgTi.sub.2 O.sub.5 and TiO.sub.2, Zn.sub.2 TiO.sub.4 and TiO.sub.2, and BaTi.sub.4 O.sub.9 and TiO.sub.2.

摘要翻译： 公开了一组电介质化合物和在微波频率下具有有用特性的电介质化合物的混合物。 电介质材料经过温度补偿，具有较高的介电常数，并且包含一组BaTi4O9，以及Li2TiO3和Li4Ti5O12，MgTi2O5和TiO2，Zn2TiO4和TiO2以及BaTi4O9和TiO2的混合物。

公开(公告)号：US3977918A

公开(公告)日：1976-08-31

申请号：US565972

申请日：1975-04-07

申请人： Albert E. Paladino ,  Paul F. Weihrauch

发明人： Albert E. Paladino ,  Paul F. Weihrauch

IPC分类号： H01F41/02 ,  H01F1/04

CPC分类号： H01F41/028

摘要： A method of making an integral toroidal magnet comprising the steps of compacting suitable magnetic powder material into a toroidal shape while subjecting it to a particle aligning magnetic field, hot pressing the compacted powder toroid in a confining die at a temperature and pressure sufficient to cause shrinkage of the toroid in the axial direction and provide a packing density greater than 93% of the theoretical maximum value and substantially unidimensional shrinkage, heat treating the toroid at a temperature sufficiently higher than the hot pressing temperature to achieve an enhanced crystallographic alignment equivalent to the alignment obtained by sintering, annealing the toroid at a temperature sufficiently lower than the heat treating temperature to provide a magnetic coercivity similar to the coercivity achieved by annealing after sintering, and magnetizing the heat treated toroid in the direction of crystallographic alignment.

摘要翻译： 一种制造整体式环形磁体的方法，包括以下步骤：将合适的磁性粉末材料压制成环形，同时对其进行颗粒排列磁场，在限定的模具中以足以引起收缩的温度和压力热压压实粉末环形 的环形线圈，并且提供大于理论最大值的93％的填充密度和基本上一维收缩，在足够高于热压温度的温度下对环形线进行热处理，以获得等同于对准的增强的结晶取向 通过烧结获得，在足以低于热处理温度的温度下对环氧树脂进行退火，以提供类似于烧结后退火获得的矫顽力的磁矫顽磁力，并且在结晶取向的方向上使热处理的环形线圈磁化。