公开(公告)号：US5818149A

公开(公告)日：1998-10-06

申请号：US622510

申请日：1996-03-25

申请人： Ahmad Safari ,  Victor F. Janas ,  Amit Bandyopadhyay ,  Rajesh K. Panda ,  Mukesh Agarwala ,  Stephen C. Danforth

发明人： Ahmad Safari ,  Victor F. Janas ,  Amit Bandyopadhyay ,  Rajesh K. Panda ,  Mukesh Agarwala ,  Stephen C. Danforth

IPC分类号： H01L41/18 ,  H01L41/22 ,  H01L41/08

CPC分类号： H01L41/37 ,  H01L41/183

摘要： A process for forming novel ceramic composites is described. The disclosed process allows for novel composite designs, including composites with regions containing different materials. Moreover, the disclosed process allows for the manufacture of composites with volume fraction gradients of different types of material. Composites with fine-scale microstructures may be formed.

摘要翻译： 描述了形成新型陶瓷复合材料的方法。 所公开的方法允许新颖的复合设计，包括具有包含不同材料的区域的复合材料。 此外，所公开的方法允许制造具有不同类型材料的体积分数梯度的复合材料。 可以形成具有精细尺寸微结构的复合材料。

公开(公告)号：US6004500A

公开(公告)日：1999-12-21

申请号：US81308

申请日：1998-05-19

申请人： Ahmad Safari ,  Victor F. Janas ,  Amit Bandyopadhyay ,  Rajesh K. Panda ,  Mukesh Agarwala ,  Stephen C. Danforth

发明人： Ahmad Safari ,  Victor F. Janas ,  Amit Bandyopadhyay ,  Rajesh K. Panda ,  Mukesh Agarwala ,  Stephen C. Danforth

IPC分类号： H01L41/18 ,  H01L41/22 ,  C04B33/32

CPC分类号： H01L41/37 ,  H01L41/183

摘要： A process for making ceramic composites includes the steps of: a) forming a polymer composition into a three-dimensional mold; b) filling said three-dimensional mold with one or more ceramic containing compositions; c) heating said filled mold to dry and sinter the ceramic; d) removing at least a portion of said three-dimensional mold thereby forming voids; and e) filling the voids with a second composition which has a piezoelectric coefficient which is substantially different from the piezoelectric coefficient of said ceramic structure. Steps a through e yield a controlled, non-random piezoelectric ceramic composite having 2-3, 3-2 or 3--3 connectivity with respect to the sintered ceramic and the second composition throughout the composite.

摘要翻译： 制备陶瓷复合材料的方法包括以下步骤：a）将聚合物组合物形成为三维模具; b）用一种或多种含陶瓷的组合物填充所述三维模具; c）加热所述填充的模具以干燥并烧结陶瓷; d）去除所述三维模具的至少一部分，从而形成空隙; 以及e）用具有与所述陶瓷结构的压电系数基本不同的压电系数的第二组合物填充所述空隙。 步骤a至e产生相对于烧结陶瓷和第二组合物在整个复合材料中具有2-3，3-2或3-3连通性的受控非随机压电陶瓷复合材料。

公开(公告)号：US6049160A

公开(公告)日：2000-04-11

申请号：US114267

申请日：1998-07-13

申请人： Ahmad Safari ,  Stephen C. Danforth ,  Amit Bandyopadhyay ,  Thomas McNulty ,  Rajesh K. Panda

发明人： Ahmad Safari ,  Stephen C. Danforth ,  Amit Bandyopadhyay ,  Thomas McNulty ,  Rajesh K. Panda

IPC分类号： H01L41/08 ,  H01L41/083 ,  H01L41/18 ,  H01L41/22

CPC分类号： H01L41/183 ,  H01L41/37 ,  B29C67/0055

摘要： This invention relates to a new class of piezoelectric composites with a radial design. More particularly, the radial design of these new ceramic/polymer composites show a higher sensitivity in the radial direction than conventional tube structured devices. Devices made utilizing this novel design will therefore show significantly enhanced performance in many applications.

摘要翻译： 本发明涉及一种具有径向设计的新型压电复合材料。 更具体地，这些新型陶瓷/聚合物复合材料的径向设计显示出比常规管结构设备更高的径向灵敏度。 因此，使用这种新颖设计的设备将在许多应用中显示出显着增强的性能。