公开(公告)号：WO9921805A3

公开(公告)日：1999-07-08

申请号：PCT/US9822566

申请日：1998-10-26

Applicant: LANXIDE TECHNOLOGY CO LTD ,  ALLIEDSIGNAL COMPOSITES INC

Inventor： FAREED ALI SYED ,  KENNEDY CHRISTOPHER ROBIN ,  SONUPARLAK BIROL ,  GARNIER JOHN EDWARD ,  SCHIROKY GERHARD HANS

IPC: C04B35/628 ,  C04B35/80 ,  C04B41/52 ,  C04B35/58

CPC classification number: 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

Abstract: 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 material(s) 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 superimposed 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.

Abstract translation: 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）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料可以在其上具有多个重叠的涂层，其中至少一个涂层可用作或含有氧化保护机制。 具体地说，包含氮化硼的涂层已被改造或改造成含有某些硅，具有改善的耐腐蚀性，特别是对氧气和水分。 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：WO9320018A3

公开(公告)日：1993-12-09

申请号：PCT/US9303024

申请日：1993-04-01

Applicant: LANXIDE TECHNOLOGY CO LTD

Inventor： KENNEDY CHRISTOPHER ROBIN ,  SONUPARLAK BIROL ,  FAREED ALI SYED ,  GARNIER JOHN EDWARD ,  SCHIROKY GERHARD HANS

IPC: C04B35/622 ,  C04B35/581 ,  C04B35/628 ,  C04B35/65 ,  C04B35/71 ,  C04B35/80 ,  C09K3/14 ,  C04B

CPC classification number: C04B35/62897 ,  B32B18/00 ,  C04B35/117 ,  C04B35/581 ,  C04B35/62675 ,  C04B35/6268 ,  C04B35/62834 ,  C04B35/62836 ,  C04B35/62863 ,  C04B35/62868 ,  C04B35/62871 ,  C04B35/62884 ,  C04B35/62894 ,  C04B35/652 ,  C04B35/803 ,  C04B35/806 ,  C04B2235/3279 ,  C04B2235/3418 ,  C04B2235/3826 ,  C04B2235/386 ,  C04B2235/3865 ,  C04B2235/3886 ,  C04B2235/40 ,  C04B2235/401 ,  C04B2235/402 ,  C04B2235/404 ,  C04B2235/405 ,  C04B2235/407 ,  C04B2235/428 ,  C04B2235/46 ,  C04B2235/5244 ,  C04B2235/5256 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2235/5268 ,  C04B2235/5436 ,  C04B2235/614 ,  C04B2235/6587 ,  C04B2235/96 ,  C04B2235/9684 ,  C04B2237/365 ,  C04B2237/38 ,  Y10T428/12056

Abstract: The present invention generally relates to mechanisms for preventing undesirable oxidation (i.e., oxidation protection mechanisms) of reinforcement materials 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. In a preferred embodiment of the present invention, the getterer material(s) form at least one compound (e.g., at least one glassy material) which acts as a crack sealant, 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 superimposed coatings thereon, at least one of which coatings may function as a getterer. The coated materials may be useful as reinforcing materials in ceramic matrix 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.

公开(公告)号：WO9213689A3

公开(公告)日：1992-10-01

申请号：PCT/US9200391

申请日：1992-01-16

Applicant: LANXIDE TECHNOLOGY CO LTD

Inventor： SONUPARLAK BIROL ,  JOHNSON WILLIAM BAYARD ,  FAREED ALI SYED

IPC: B28B11/00 ,  B22F3/24 ,  C04B35/80 ,  C04B41/80 ,  C04B41/91 ,  C22C1/10 ,  B28B

CPC classification number: B22F3/24 ,  C04B35/80 ,  C22C1/1036 ,  C22C2001/1063

Abstract: The present invention relates to a novel process for removal of at least a portion of at least one metallic component of a metallic constituent (22) from a fiber reinforced ceramic matrix composite body (20). Particularly, by providing at least one of an infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere (50) to be in communication with a permeable mass (30), which contacts at least a portion of a composite body, said metallic component of the composite body, when made molten, is caused to spontaneously infiltrate the permeable mass. Such spontaneous infiltration occurs without the requirement for the application of any pressure or vacuum.