公开(公告)号：US20160236986A1

公开(公告)日：2016-08-18

申请号：US15027705

申请日：2014-09-24

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Andi Limarga ,  Paul Sheedy ,  Wayde R. Schmidt ,  Douglas M. Berczik ,  Tania Bhatia Kashyap ,  Mark A. Hermann

IPC: C04B35/571

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预陶瓷聚合物材料。 含硅预陶瓷聚合物材料包括分散有效量的掺杂剂颗粒。 然后将含硅预陶瓷聚合物材料热转化成含硅陶瓷材料。 相对于没有掺杂剂颗粒的含硅预陶瓷聚合物，相对于形成所选择的多晶型物的一个或多个结晶多晶型物中的至少一种，掺杂剂颗粒的有效量增加了至少一个， 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物形成的量和形成一种或多种结晶多晶型物的温度。