公开(公告)号：US5853653A

公开(公告)日：1998-12-29

申请号：US826785

申请日：1997-04-07

申请人： Aldo Donato ,  Carlo Alberto Nannetti ,  Alberto Ortona ,  Elisabetta Borsella ,  Sabina Botti ,  Sergio Casadio ,  Gianni D'Alessandro ,  Antonio Alessandro Licciulli ,  Stefano Martelli ,  Amedeo Masci

发明人： Aldo Donato ,  Carlo Alberto Nannetti ,  Alberto Ortona ,  Elisabetta Borsella ,  Sabina Botti ,  Sergio Casadio ,  Gianni D'Alessandro ,  Antonio Alessandro Licciulli ,  Stefano Martelli ,  Amedeo Masci

IPC分类号： C04B35/571 ,  C04B35/80

CPC分类号： C04B35/571 ,  C04B35/806 ,  Y10S977/779 ,  Y10S977/847 ,  Y10S977/891 ,  Y10S977/892 ,  Y10S977/897 ,  Y10S977/90 ,  Y10S977/961

摘要： Ceramic matrix composites (CMC) of high density, preferably of the type SiC/SiC, are provided by a production process based on the infiltration of ceramic fiber cloths with a polymeric precursor solution containing, as fillers, inert powders having size much lower than the mean distance among the ceramic fibers which are used as basic material for the manufacturing of CMC, typically a nanometric granulometry. Such step is followed by the steps of hardening the cloths, pyrolysis of the polymer and repeated thickenings until the desired density is reached. A possible alternative process comprises a brief (

摘要翻译： 高密度，优选SiC / SiC类型的陶瓷基质复合材料（CMC）是通过基于陶瓷纤维布渗透的制备方法提供的，该聚合物前体溶液含有作为填料的惰性粉末，其尺寸比 用作制造CMC的基本材料的陶瓷纤维之间的平均距离，通常是纳米粒度测定法。 这样的步骤之后是将织物硬化，聚合物热分解并重复加厚直到达到所需密度的步骤。 可能的替代方法包括对来自气相（CVI）的SiC从前体和用于沉积碳化硅的典型操作参数进行简单（<24小时）处理，随后重复增稠。