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：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：US5932507A

公开(公告)日：1999-08-03

申请号：US26228

申请日：1998-02-19

申请人： Remco van Weeren ,  Jeffrey A. Goldacker ,  Philip J. Whalen

发明人： Remco van Weeren ,  Jeffrey A. Goldacker ,  Philip J. Whalen

IPC分类号： C04B35/48 ,  C04B35/486 ,  C04B41/00 ,  C04B41/80 ,  C04B35/10

CPC分类号： C04B41/009 ,  C04B35/486 ,  C04B35/4885 ,  C04B35/632 ,  C04B41/0072 ,  C04B41/80 ,  C04B2235/3225 ,  C04B2235/3229 ,  C04B2235/3246 ,  C04B2235/6022 ,  C04B2235/6027 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/662 ,  C04B2235/77

摘要： A ceramic body having a surface region containing tetragonal zirconia is sintered to at least 95% theoretical density at a temperature below about 1550 .degree. C. The surface region is then heat treated to reverse local stresses therein. Low temperature degradation in tetragonal zirconia, and materials containing tetragonal zirconia, is significantly inhibited. The heat treated ceramic is especially suited for use in structural components such as valves, engine housings, pistons (chambers) and the like which, during operation, are frequently exposed to temperatures ranging from room temperature to 500.degree. C. for prolonged periods of time.

摘要翻译： 具有包含四方晶氧化锆的表面区域的陶瓷体在低于约1550℃的温度下被烧结至至少95％的理论密度。然后对表面区域进行热处理以反转其中的局部应力。 四方晶氧化锆的低温降解和含有四方晶氧化锆的材料被显着抑制。 经热处理的陶瓷特别适用于结构部件，例如阀门，发动机壳体，活塞（室）等，其在操作期间经常暴露于室温至500℃的温度下延长时间 。