公开(公告)号：US5900207A

公开(公告)日：1999-05-04

申请号：US858965

申请日：1997-05-20

申请人： Stephen C. Danforth ,  Mukesh Agarwala ,  Amit Bandyopadghyay ,  Noshir Langrana ,  Vikram R. Jamalabad ,  Ahmad Safari ,  Remco van Weeren ,  William R. Priedeman, Jr.

发明人： Stephen C. Danforth ,  Mukesh Agarwala ,  Amit Bandyopadghyay ,  Noshir Langrana ,  Vikram R. Jamalabad ,  Ahmad Safari ,  Remco van Weeren ,  William R. Priedeman, Jr.

IPC分类号： B29C41/36 ,  B29C67/00 ,  B29C41/02 ,  C04B35/00

CPC分类号： B29C67/0081 ,  B29C41/36 ,  D01F1/10

摘要： A fused deposition process is used to form three-dimensional solid objects from a mixture including a particulate composition dispersed in a binder. The article is formed by depositing the mixture in repeated layers of predefined thickness, with each layer solidifying before the next adjacent layer is dispensed. Following formation and a binder removal step, the article may be at least partially densified to achieve preselected properties. The process permits three-dimensional articles to be formed relatively quickly and inexpensively, without the need for molds or other tooling.

摘要翻译： 使用熔融沉积工艺从包含分散在粘合剂中的颗粒组合物的混合物形成三维固体物体。 通过以预定厚度的重复层沉积混合物形成制品，每层在分配下一相邻层之前固化。 在形成和粘合剂去除步骤之后，制品可以至少部分致密化以实现预选的性质。 该方法允许三维制品相对快速和廉价地形成，而不需要模具或其它工具。

公开(公告)号：US5738817A

公开(公告)日：1998-04-14

申请号：US598276

申请日：1996-02-08

申请人： Stephen C. Danforth ,  Mukesh Agarwala ,  Amit Bandyopadghyay ,  Noshir Langrana ,  Vikram R. Jamalabad ,  Ahmad Safari ,  Remco van Weeren

发明人： Stephen C. Danforth ,  Mukesh Agarwala ,  Amit Bandyopadghyay ,  Noshir Langrana ,  Vikram R. Jamalabad ,  Ahmad Safari ,  Remco van Weeren

IPC分类号： B29C41/36 ,  B29C67/00 ,  B29C41/02 ,  C04B35/00

CPC分类号： B29C67/0081 ,  B29C41/36 ,  D01F1/10

摘要： A fused deposition process is used to form three-dimensional solid objects from a mixture including a particulate composition dispersed in a binder. The article is formed by depositing the mixture in repeated layers of predefined thickness, with each layer solidifying before the next adjacent layer is dispensed. Following formation and a binder removal step, the article may be at least partially densified to achieve preselected properties. The process permits three-dimensional articles to be formed relatively quickly and inexpensively, without the need for molds or other tooling.

公开(公告)号：US5824250A

公开(公告)日：1998-10-20

申请号：US672858

申请日：1996-06-28

申请人： Philip J. Whalen ,  Vikram R. Jamalabad ,  John P. Pollinger ,  Mukesh Agarwala ,  Stephen C. Danforth

发明人： Philip J. Whalen ,  Vikram R. Jamalabad ,  John P. Pollinger ,  Mukesh Agarwala ,  Stephen C. Danforth

IPC分类号： C04B35/622 ,  C04B33/28

CPC分类号： C04B35/622

摘要： A ceramic component is manufactured rapidly using a mold made directly from a solid freeform manufacturing process. Solid freeform fabrication, or rapid prototyping, procedures are used to generate molds of materials that are soluble or otherwise fugitive. A gel casting suspension containing ceramic and emulsifying agents is poured into the cavity of the mold and caused to set. The mold is then removed by dissolution or heat treatment, leaving intact the gelcast part. Conventional procedures are then utilized to densify the gelcast component to the required final component. Time consuming and expensive machine tooling procedures are virtually eliminated. Ceramic components are generated rapidly in a cost effective manner.

摘要翻译： 使用直接由固体自由形成制造工艺制成的模具快速制造陶瓷部件。 使用固体自由形式制造或快速原型制作程序来生产可溶或其他易失性物质的模具。 将含有陶瓷和乳化剂的凝胶浇注悬浮液倒入模具的腔体中并使其凝固。 然后通过溶解或热处理除去模具，保留凝胶体部分。 然后使用常规程序将凝胶体组分致密化成所需的最终组分。 实际上消除了耗时且昂贵的机床加工程序。 以成本有效的方式快速生成陶瓷部件。

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：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。