公开(公告)号：US08894918B2

公开(公告)日：2014-11-25

申请号：US12709086

申请日：2010-02-19

申请人： James A. DiCarlo ,  Hee-Mann Yun

发明人： James A. DiCarlo ,  Hee-Mann Yun

IPC分类号： C04B35/565 ,  C04B35/571 ,  C04B35/80 ,  C04B35/628 ,  C04B35/589 ,  C04B35/584

CPC分类号： C04B35/803 ,  C04B35/565 ,  C04B35/571 ,  C04B35/584 ,  C04B35/589 ,  C04B35/62868 ,  C04B35/62873 ,  C04B35/62884 ,  C04B2235/5244 ,  C04B2235/614 ,  C04B2235/616

摘要： Methods are disclosed for producing architectural preforms and high-temperature composite structures containing high-strength ceramic fibers with reduced preforming stresses within each fiber, with an in-situ grown coating on each fiber surface, with reduced boron within the bulk of each fiber, and with improved tensile creep and rupture resistance properties tier each fiber. The methods include the steps of preparing an original sample of a preform formed from a pre-selected high-strength silicon carbide ceramic fiber type, placing the original sample in a processing furnace under a pre-selected preforming stress state and thermally treating the sample in the processing furnace at a pre-selected processing temperature and hold time in a processing gas having a pre-selected composition, pressure, and flow rate. For the high-temperature composite structures, the method includes additional steps of depositing a thin interphase coating on the surface of each fiber and forming a ceramic or carbon-based matrix within the sample.

摘要翻译： 公开了用于生产建筑预制件和含有高强度陶瓷纤维的高温复合结构的方法，所述高强度陶瓷纤维在每个纤维内具有降低的预应力应力，在每个纤维表面上具有原位生长的涂层，在每个纤维的主体内具有减少的硼，以及 具有改进的抗拉蠕变和抗断裂特性使每个纤维分层。 该方法包括以下步骤：准备由预先选定的高强度碳化硅陶瓷纤维形成的预成型件的原始样品，将原始样品放置在预先选定的预应力状态的加工炉中，并将样品热处理 处理炉在预选的组成，压力和流速的处理气体中处于预先选定的处理温度和保持时间。 对于高温复合结构，该方法包括在每个纤维的表面上沉积薄的相间涂层并在样品内形成陶瓷或碳基基质的附加步骤。

公开(公告)号：US07427428B1

公开(公告)日：2008-09-23

申请号：US10601657

申请日：2003-06-24

申请人： James A. DiCarlo ,  Ramakrishna Bhatt ,  Gregory N. Morscher ,  Hee-Mann Yun

发明人： James A. DiCarlo ,  Ramakrishna Bhatt ,  Gregory N. Morscher ,  Hee-Mann Yun

IPC分类号： B05D3/02 ,  B32B9/04 ,  D02G3/02 ,  C04B35/80

CPC分类号： C04B35/62884 ,  C04B35/573 ,  C04B35/62868 ,  C04B35/62871 ,  C04B35/62873 ,  C04B35/62894 ,  C04B35/806 ,  C04B2235/428 ,  C04B2235/5244 ,  C04B2235/80 ,  Y10T428/2918 ,  Y10T428/292

摘要： A ceramic matrix composite material is disclosed having non-oxide ceramic fibers, which are formed in a complex fiber architecture by conventional textile processes; a thin mechanically weak interphase material, which is coated on the fibers; and a non-oxide or oxide ceramic matrix, which is formed within the interstices of the interphase-coated fiber architecture. During composite fabrication or post treatment, the interphase is allowed to debond from the matrix while still adhering to the fibers, thereby providing enhanced oxidative durability and damage tolerance to the fibers and the composite material.

摘要翻译： 公开了一种陶瓷基复合材料，其具有通过常规纺织方法在复合纤维结构中形成的非氧化物陶瓷纤维; 薄的机械弱相间材料，其涂覆在纤维上; 以及在相间涂覆的纤维结构的间隙内形成的非氧化物或氧化物陶瓷基体。 在复合制造或后处理期间，允许相间脱离基质同时仍然粘附到纤维上，从而提供对纤维和复合材料的增强的氧化耐久性和损伤耐受性。

公开(公告)号：US20120076927A1

公开(公告)日：2012-03-29

申请号：US13018611

申请日：2011-02-01

申请人： Ramakrishna T. Bhatt ,  James A. Dicarlo

发明人： Ramakrishna T. Bhatt ,  James A. Dicarlo

IPC分类号： B05D5/12 ,  C04B35/64

CPC分类号： C04B35/565 ,  C04B35/571 ,  C04B35/62868 ,  C04B35/62871 ,  C04B35/62873 ,  C04B35/62884 ,  C04B35/62894 ,  C04B35/806 ,  C04B41/009 ,  C04B41/5001 ,  C04B41/85 ,  C04B2235/3826 ,  C04B2235/5244 ,  C04B2235/5256 ,  C04B2235/5268 ,  C04B2235/614 ,  C04B2235/616 ,  C04B2235/658 ,  C04B2235/77 ,  C04B2235/94 ,  C04B2235/95 ,  C04B2235/96 ,  C04B2235/9607 ,  C04B41/0072 ,  C04B41/4517 ,  C04B41/455

摘要： A thermal treatment process for improving thermo-mechanical properties of ceramic matrix composite materials such as silicon carbide (SiC) matrix composites is described. The treatment process removes excess silicon and/or other process-related defects from the SiC-based matrix as well as the fiber interfacial coating. This invention can be practiced with minimal strength loss for as-fabricated composites formed from high-strength continuous-length ceramic and carbon-based fibers that are functionally stable to 1600° C. and above. The invention provides a method for significantly improving composite thermal conductivity and creep resistance, and for reducing composite porosity. It has been demonstrated using state-of-the-art 2D woven SiC/SiC composites containing Sylramic-iBN SiC fibers, boron-nitride-based interfacial coatings, and hybrid matrices that are based on SIC formed by chemical vapor infiltration (CVI) and by a combination of CNI, SiC particulate infiltration, polymer infiltration and pyrolysis, and melt infiltration of silicon, silicon-based alloys, and silicides.

摘要翻译： 描述了一种用于改善陶瓷基复合材料如碳化硅（SiC）基体复合材料的热机械性能的热处理工艺。 处理过程从SiC基基质以及纤维界面涂层中除去过量的硅和/或其它与工艺相关的缺陷。 对于在1600℃及以上功能稳定的高强度连续长度陶瓷和碳基纤维形成的制造复合材料，本发明可以以最小的强度损失来实施。 本发明提供了一种显着提高复合材料导热性和抗蠕变性以及降低复合孔隙率的方法。 已经证明了使用含有Sylramic-iBN SiC纤维，基于氮化硼的界面涂层和基于通过化学气相渗透（CVI）形成的SIC的混合基体的最先进的2D编织SiC / SiC复合材料， 通过CNI，SiC颗粒渗透，聚合物渗透和热解的组合，以及硅，硅基合金和硅化物的熔融渗透。

公开(公告)号：US07687016B1

公开(公告)日：2010-03-30

申请号：US10777630

申请日：2004-02-13

申请人： James A. DiCarlo ,  Hee Yun

发明人： James A. DiCarlo ,  Hee Yun

IPC分类号： C04B41/50

CPC分类号： C04B35/803 ,  C04B35/565 ,  C04B35/571 ,  C04B35/584 ,  C04B35/589 ,  C04B35/62868 ,  C04B35/62873 ,  C04B35/62884 ,  C04B2235/5244 ,  C04B2235/614 ,  C04B2235/616

摘要： Methods are disclosed for producing architectural preforms and high-temperature composite structures containing high-strength ceramic fibers with reduced preforming stresses within each fiber, with an in-situ grown coating on each fiber surface, with reduced boron within the bulk of each fiber, and with improved tensile creep and rupture resistance properties for each fiber. The methods include the steps of preparing an original sample of a preform formed from a pre-selected high-strength silicon carbide ceramic fiber type, placing the original sample in a processing furnace under a pre-selected preforming stress state and thermally treating the sample in the processing furnace at a pre-selected processing temperature and hold time in a processing gas having a pre-selected composition, pressure, and flow rate. For the high-temperature composite structures, the method includes additional steps of depositing a thin interphase coating on the surface of each fiber and forming a ceramic or carbon-based matrix within the sample.

摘要翻译： 公开了用于生产建筑预制件和含有高强度陶瓷纤维的高温复合结构的方法，所述高强度陶瓷纤维在每个纤维内具有降低的预应力应力，在每个纤维表面上具有原位生长的涂层，在每个纤维的主体内具有减少的硼，以及 具有改善的每种纤维的抗拉蠕变和抗断裂特性。 该方法包括以下步骤：准备由预先选定的高强度碳化硅陶瓷纤维形成的预成型件的原始样品，将原始样品放置在预先选定的预应力状态的加工炉中，并将样品热处理 处理炉在预选的组成，压力和流速的处理气体中处于预先选定的处理温度和保持时间。 对于高温复合结构，该方法包括在每个纤维的表面上沉积薄的相间涂层并在样品内形成陶瓷或碳基基质的附加步骤。

公开(公告)号：US20100289192A1

公开(公告)日：2010-11-18

申请号：US12709086

申请日：2010-02-19

申请人： James A. DiCarlo ,  Hee-Mann Yun

发明人： James A. DiCarlo ,  Hee-Mann Yun

IPC分类号： C04B35/565

CPC分类号： C04B35/803 ,  C04B35/565 ,  C04B35/571 ,  C04B35/584 ,  C04B35/589 ,  C04B35/62868 ,  C04B35/62873 ,  C04B35/62884 ,  C04B2235/5244 ,  C04B2235/614 ,  C04B2235/616

摘要： Methods are disclosed for producing architectural preforms and high-temperature composite structures containing high-strength ceramic fibers with reduced preforming stresses within each fiber, with an in-situ grown coating on each fiber surface, with reduced boron within the bulk of each fiber, and with improved tensile creep and rupture resistance properties tier each fiber. The methods include the steps of preparing an original sample of a preform formed from a pre-selected high-strength silicon carbide ceramic fiber type, placing the original sample in a processing furnace under a pre-selected preforming stress state and thermally treating the sample in the processing furnace at a pre-selected processing temperature and hold time in a processing gas having a pre-selected composition, pressure, and flow rate. For the high-temperature composite structures, the method includes additional steps of depositing a thin interphase coating on the surface of each fiber and forming a ceramic or carbon-based matrix within the sample.

摘要翻译： 公开了用于生产建筑预制件和含有高强度陶瓷纤维的高温复合结构的方法，所述高强度陶瓷纤维在每个纤维内具有降低的预应力应力，在每个纤维表面上具有原位生长的涂层，在每个纤维的主体内具有减少的硼，以及 具有改进的抗拉蠕变和抗断裂特性使每个纤维分层。 该方法包括以下步骤：准备由预先选定的高强度碳化硅陶瓷纤维形成的预成型件的原始样品，将原始样品放置在预先选定的预应力状态的加工炉中，并将样品热处理 处理炉在预选的组成，压力和流速的处理气体中处于预先选定的处理温度和保持时间。 对于高温复合结构，该方法包括在每个纤维的表面上沉积薄的相间涂层并在样品内形成陶瓷或碳基基质的附加步骤。