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    11.
    发明专利
    未知

    公开(公告)号：FR2827277B1

    公开(公告)日：2006-03-03

    申请号：FR0208982

    申请日：2002-07-16

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHMIDT WAYDE R ,  GIEDT DONALD C

    IPC: C04B35/565 ,  C04B35/577 ,  C04B35/571 ,  C04B35/573 ,  C04B35/65 ,  C04B35/80 ,  C04B35/83 ,  C22C29/06

    Abstract: A method for preparing a refractory carbide component includes the steps of providing a carbon rich polymer precursor to silicon carbide and excess carbon, determining an amount of excess carbon in the carbon rich polymer precursor, combining the carbon rich polymer precursor with a selected amount of refractory metal to form a precursor/metal mixture, the selected amount being selected so as to provide stoichiometrically equivalent amounts of the excess carbon and the refractory metal, forming the mixture into a preform of a propulsion component, and heating the preform so as to thermally degrade the carbon rich polymer precursor to produce the silicon carbide and the excess carbon, the excess carbon and the refractory metal reacting to form refractory metal carbide and provide the refractory carbide component.

    METHOD FOR PROVIDING CRYSTALLINE SILICON-CONTAINING CERAMIC MATERIAL
    15.
    发明公开
    METHOD FOR PROVIDING CRYSTALLINE SILICON-CONTAINING CERAMIC MATERIAL 审中-公开
    VERFAHREN ZUR BEREITSTELLUNG EINES SILICIUMHALTIGEN KRISTALLINEN KERAMIKMATERIALS

    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。

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