公开(公告)号：EP3055270A4

公开(公告)日：2017-07-05

申请号：EP14852865

申请日：2014-09-24

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LIMARGA ANDI M ,  SHEEDY PAUL ,  SCHMIDT WAYDE R ,  BERCZIK DOUGLAS M ,  KASHYAP TANIA BHATIA ,  HERMANN MARK A

IPC: C04B35/63 ,  C04B35/14 ,  C04B35/622 ,  C04B35/64

CPC classification number: C04B35/571 ,  C04B35/58 ,  C04B35/806 ,  C04B2235/3821 ,  C04B2235/383 ,  C04B2235/3852 ,  C04B2235/386 ,  C04B2235/3865 ,  C04B2235/3873 ,  C04B2235/422 ,  C04B2235/425 ,  C04B2235/427 ,  C04B2235/5244 ,  C04B2235/5288 ,  C04B2235/5454 ,  C04B2235/616

Abstract: Disclosed is a method for providing a crystalline ceramic material. In an example, the method includes providing a silicon-containing preceramic polymer material that can be thermally converted to one or more crystalline polymorphs. The silicon-containing preceramic polymer material includes dispersed therein an effective amount of dopant particles. The silicon-containing preceramic polymer material is then thermally converted to the silicon-containing ceramic material. The effective amount of dopant particles enhance the formation of at least one of the one or more crystalline polymorphs, relative to the silicon-containing preceramic polymer without the dopant particles, with respect to at least one of formation of a selected polymorph of the one or more crystalline polymorphs formed, an amount formed of a selected polymorph of the one or more crystalline polymorphs formed, and a temperature of formation of the one or more crystalline polymorphs.

Abstract translation: 公开了一种用于提供结晶陶瓷材料的方法。 在一个实例中，该方法包括提供可以热转化成一种或多种结晶多晶型物的含硅前陶瓷聚合物材料。 含硅前陶瓷聚合物材料包括分散在其中的有效量的掺杂剂颗粒。 然后将含硅陶瓷先驱聚合物材料热转化为含硅陶瓷材料。 关于一种或多种结晶多晶型中的至少一种，相对于没有掺杂剂颗粒的含硅前陶瓷聚合物，有效量的掺杂剂颗粒相对于一种或多种结晶多晶型物的选定多晶型的形成或 形成更多的结晶多晶型物，由所形成的一种或多种结晶多晶型物的选定多晶型形成的量，以及形成一种或多种结晶多晶型物的温度。

公开(公告)号：EP3046892A4

公开(公告)日：2017-05-10

申请号：EP14854030

申请日：2014-09-12

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MCCAFFREY MICHAEL G ,  BERCZIK DOUGLAS M

IPC: C04B35/52 ,  C04B35/626 ,  C04B35/64 ,  C04B35/80 ,  F02C7/00

CPC classification number: C04B38/0615 ,  B05D3/007 ,  C04B35/573 ,  C04B35/6267 ,  C04B35/806 ,  C04B41/89 ,  C04B2235/3821 ,  C04B2235/3826 ,  C04B2235/3873 ,  C04B2235/428 ,  C04B2235/5248 ,  C04B2235/5252 ,  C04B2235/5256 ,  C04B2235/614 ,  C04B2235/616 ,  C04B35/52 ,  C04B38/0096

Abstract: A method of densifying a CMC article includes the steps of pyrolyzing a CMC article until a desired initial porosity is achieved, coating CMC pores within the CMC article with carbon, pyrolyzing the carbon to form carbon pores, coating the carbon pores with silicon, and heat treating the CMC article to create a silicon carbide filled pore integrated with silicon carbide of the CMC article to densify the CMC article.

Abstract translation: 使CMC制品致密化的方法包括以下步骤：热解CMC制品直到获得所需的初始孔隙率;用CMC涂覆CMC制品内的CMC孔;热解碳形成碳孔;用硅涂覆碳孔;加热 处理CMC制品以产生与CMC制品的碳化硅整合的碳化硅填充的孔隙以使CMC制品致密化。