公开(公告)号：US06228453B1

公开(公告)日：2001-05-08

申请号：US08958685

申请日：1997-10-27

申请人： Ali Syed Fareed ,  John Edward Garnier ,  Gerhard Hans Schiroky ,  Christopher Robin Kennedy ,  Birol Sonuparlak

发明人： Ali Syed Fareed ,  John Edward Garnier ,  Gerhard Hans Schiroky ,  Christopher Robin Kennedy ,  Birol Sonuparlak

IPC分类号： B32B516

CPC分类号： C04B35/62863 ,  B32B18/00 ,  C04B35/117 ,  C04B35/581 ,  C04B35/62844 ,  C04B35/62852 ,  C04B35/62868 ,  C04B35/62871 ,  C04B35/62884 ,  C04B35/62894 ,  C04B35/62897 ,  C04B35/652 ,  C04B35/653 ,  C04B35/80 ,  C04B35/803 ,  C04B35/806 ,  C04B41/009 ,  C04B41/52 ,  C04B2235/3279 ,  C04B2235/3454 ,  C04B2235/40 ,  C04B2235/401 ,  C04B2235/402 ,  C04B2235/405 ,  C04B2235/407 ,  C04B2235/428 ,  C04B2235/46 ,  C04B2235/5244 ,  C04B2235/5256 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2235/5268 ,  C04B2235/5436 ,  C04B2235/6028 ,  C04B2235/614 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/6586 ,  C04B2235/6587 ,  C04B2235/662 ,  C04B2235/96 ,  C04B2237/343 ,  C04B2237/38 ,  C04B2237/586 ,  Y10T428/12035 ,  Y10T428/12056 ,  Y10T428/12458 ,  Y10T428/15 ,  Y10T428/2991 ,  C04B41/4531 ,  C04B41/5064 ,  C04B41/5059 ,  C04B41/5066 ,  C04B41/522 ,  C04B41/5031 ,  C04B14/4693

摘要： The present invention generally relates to mechanisms for preventing undesirable oxidation (i.e., oxidation protection mechanisms) in composite bodies. The oxidation protection mechanisms include getterer materials which are added to the composite body which gather or scavenge undesirable oxidants which may enter the composite body. The getterer materials may be placed into at least a portion of the composite body such that any undesirable oxidant approaching, for example, a fiber reinforcement, would be scavenged by (e.g., reacted with) the getterer. The getterer materials) may form at least one compound which acts as a passivation layer, and/or is able to move by bulk transport (e.g., by viscous flow as a glassy material) to a crack, and sealing the crack, thereby further enhancing the oxidation protection of the composite body. One or more ceramic filler materials which serve as reinforcements may have a plurality of super-imposed coatings thereon, at least one of which coatings may function as or contain an oxidation protection mechanism. Specifically, a coating comprising boron nitride which has been engineered or modified to contain some silicon exhibits improved corrosion resistance, specifically to oxygen and moisture. The coated materials may be useful as reinforcing materials in high performance composites to provide improved mechanical properties such as fracture toughness. The present invention also relates to improved composites which incorporate these materials, and to their methods of manufacture.

摘要翻译： 本发明一般涉及用于防止复合体中不希望的氧化（即氧化保护机制）的机理。 氧化保护机理包括加入到复合体中的吸收剂材料，其收集或清除可能进入复合体的不期望的氧化剂。 吸收剂材料可以被放置在复合体的至少一部分中，使得接近例如纤维增强剂的任何不期望的氧化物将被吸收器（例如与反应物）一起清除。 吸收剂材料）可以形成至少一种作为钝化层的化合物，和/或能够通过散装运输（例如，作为玻璃状材料的粘性流动）移动到裂纹中，并且密封裂纹，由此进一步增强 复合体的氧化保护。 用作增强材料的一种或多种陶瓷填充材料可以在其上具有多个超级涂层，其中至少一种涂层可以起氧化或含有氧化保护机制的作用。 具体地说，包含氮化硼的涂层已被改造或改造成含有一些硅，具有改善的耐腐蚀性，特别是对氧气和水分的影响。 涂覆的材料可用作高性能复合材料中的增强材料，以提供改进的机械性能，例如断裂韧性。 本发明还涉及包含这些材料的改进的复合材料及其制造方法。

公开(公告)号：US5682594A

公开(公告)日：1997-10-28

申请号：US472613

申请日：1995-06-07

申请人： Christopher Robin Kennedy ,  Birol Sonuparlak ,  Ali Syed Fareed ,  John Edward Garnier ,  Gerhard Hans Schiroky ,  Dennis James Landini ,  Virgil Irick, Jr.

发明人： Christopher Robin Kennedy ,  Birol Sonuparlak ,  Ali Syed Fareed ,  John Edward Garnier ,  Gerhard Hans Schiroky ,  Dennis James Landini ,  Virgil Irick, Jr.

IPC分类号： C04B35/628 ,  C04B35/65 ,  C04B35/80 ,  C09K3/14 ,  B22F3/00 ,  C03C13/00

CPC分类号： C04B35/62894 ,  B32B18/00 ,  C04B35/117 ,  C04B35/581 ,  C04B35/62844 ,  C04B35/62852 ,  C04B35/62855 ,  C04B35/62863 ,  C04B35/62865 ,  C04B35/62868 ,  C04B35/62871 ,  C04B35/62873 ,  C04B35/62884 ,  C04B35/62897 ,  C04B35/652 ,  C04B35/80 ,  C04B2235/3279 ,  C04B2235/40 ,  C04B2235/401 ,  C04B2235/402 ,  C04B2235/404 ,  C04B2235/405 ,  C04B2235/407 ,  C04B2235/428 ,  C04B2235/524 ,  C04B2235/5244 ,  C04B2235/5248 ,  C04B2235/5252 ,  C04B2235/5256 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2235/5268 ,  C04B2235/614 ,  C04B2235/6587 ,  C04B2235/96 ,  C04B2237/343 ,  C04B2237/366 ,  C04B2237/38 ,  Y10T428/12035 ,  Y10T428/12056 ,  Y10T428/197

摘要： Coated ceramic filler materials comprised of ceramic particles, fibers, whiskers, etc. having at least two substantially continuous coatings thereon are provided. The coatings are selected so that the interfacial shear strength between the ceramic filler material and the first coating, between coatings, or between the outer coating and the surrounding matrix material, are not equal so as to permit debonding and pull-our when fracture occurs. The resultant, multi-coated ceramic filler materials may be employed to provide composites, especially ceramic matrix composites, with increased fracture toughness. The ceramic filler materials are designed to be particularly compatible with ceramic matrices formed by directed oxidation of precursor metals, but such ceramic filler materials are also adaptable for use in many other composite material systems. In a preferred embodiment, the coatings are applied to the ceramic fiber plies or preforms by CVD. Accordingly, coating depositions which are more uniform through the preform cross-section have been achieved by assembling the preform with exterior fabric plies having greater gas permeability than the fibrous preform or fabric plies located deeper in the preform interior. In another preferred embodiment, at least one additional filler material different in some respect from a first fibrous filler material is provided to the permeable mass to be infiltrated with matrix material. Specifically, the additional filler material is provided for the purpose of tailoring at least one additional property of the self-supporting composite body to be formed not already tailored by the first fibrous filler material.

摘要翻译： 提供了由其上具有至少两个基本上连续的涂层的陶瓷颗粒，纤维，晶须等组成的涂覆陶瓷填料。 选择涂层使得陶瓷填充材料与第一涂层之间，涂层之间或外涂层与周围基体材料之间的界面剪切强度不相等，从而当断裂发生时允许剥离和拉伸。 所得多层陶瓷填料可用于提供具有增加的断裂韧性的复合材料，特别是陶瓷基复合材料。 陶瓷填充材料被设计成与通过前体金属的直接氧化形成的陶瓷基质特别相容，但是这种陶瓷填料也适用于许多其它复合材料体系。 在优选的实施方案中，通过CVD将涂层施加到陶瓷纤维层或预制件上。 因此，通过将预成型件与比预制件内部更深的纤维预制件或织物层具有更大的气体渗透性的外部织物层组装，已经实现了通过预成型件横截面更均匀的涂层沉积。 在另一个优选的实施方案中，至少一种不同于第一纤维状填料的附加填料材料被提供到渗透物质以被基体材料渗透。 具体地说，附加的填充材料是为了定制尚未由第一纤维状填料材料制成的自支撑复合体的至少一种附加性能而设置的。

公开(公告)号：US5667898A

公开(公告)日：1997-09-16

申请号：US293995

申请日：1994-08-22

申请人： Edward MacNally Anderson ,  Thomas Alfred Johnson ,  John Edward Garnier ,  Kenneth Scott Hatton ,  Dennis James Landini ,  Aspi Nanabhai Patel

发明人： Edward MacNally Anderson ,  Thomas Alfred Johnson ,  John Edward Garnier ,  Kenneth Scott Hatton ,  Dennis James Landini ,  Aspi Nanabhai Patel

IPC分类号： C04B35/478 ,  C04B35/622 ,  C04B35/65 ,  C23C28/04 ,  C23C30/00 ,  B32B15/00

CPC分类号： C04B35/478 ,  C04B35/62222 ,  C04B35/652 ,  C23C28/04 ,  C23C30/00 ,  C04B2111/00405

摘要： The present invention relates, generally, to a self-supporting porous ceramic composite body and to methods for producing such articles to net or near net shape, which bodies exhibit superior thermal and mechanical properties. The invention also relates to the manufacture of ceramic-metal or ceramic-ceramic macrocomposite bodies which have the porous ceramic articles incorporated therein or thereon.

摘要翻译： 本发明一般涉及一种自支撑多孔陶瓷复合体，以及用于制造网状或近净形状的这种制品的方法，其具有优异的热和机械性能。 本发明还涉及其中结合有多孔陶瓷制品的陶瓷 - 金属或陶瓷 - 陶瓷大复合体的制造。