Ali S Fareed

20020058107, May 16, 2002

Feb 21, 2001

09/790118

Ali Fareed - Newark DE, US
John Garnier - Newark DE, US
Gerhard Schiroky - Newark DE, US
Christopher Kennedy - Newark DE, US
Birol Sonuparlak - Longmont CO, US

C23C016/08
C23C016/00

427/255390

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 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.

20070054103, Mar 8, 2007

Sep 7, 2005

11/220817

Ali Syed Fareed - Newark DE, US
Nikhil Shrinivas Miraj - Newark DE, US

D04H 13/00

428292100

A method for reducing oxidation in ceramic composites is provided. The method includes depositing a first portion of a silicon carbide (SiC) matrix over at least a portion of an article using a first chemical vapor infiltration (CVI) process, depositing a silicon (Si)-doped boron nitride (BN) layer within at least a portion of the SiC matrix using a second CVI process, and depositing a second portion of the SiC matrix within at least a portion or continuation of the first portion of the SiC matrix using a third CVI process.

55851657, Dec 17, 1996

Sep 30, 1994

8/318625

Christopher R. Kennedy - Newark DE
Birol Sonuparlak - Newark DE
Ali S. Fareed - Wilmington DE
John E. Garnier - Newark DE
Gerhard H. Schiroky - Hockessin DE

Lanxide Technology Company, LP - Newark DE

B32B 700
C04B 3502
B05D 136

428212

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.

53500032, Sep 27, 1994

Jul 9, 1993

8/090352

Birol Sonuparlak - Newark DE
William B. Johnson - Newark DE
Ali S. Fareed - Wilmington DE

Lanxide Technology Company, LP - Newark DE

B22D 1902
B22D 1914

164 91

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 from a multi-phase composite body. Particularly, by providing at least one of an infiltration enhancer or an infiltration enhancer precursor or an infiltrating atmosphere to be in communication with a permeable mass, 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. The metallic constituent is essentially leached or removed from the multi-phase body by spontaneous infiltration.

53308492, Jul 19, 1994

Apr 2, 1992

7/862397

Christopher R. Kennedy - Newark DE
Birol Sonuparlak - Newark DE
Ali S. Fareed - Wilmington DE
John E. Garnier - Newark DE
Gerhard H. Schiroky - Hockessin DE

Lanxide Technology Company, LP - Newark DE

B22F 500
B05D 500

428552

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 matrix such that any desirable oxidant approaching, for example, a fiber reinforcement, would be scavenged by (e. g. , reacted with) the getterer. 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 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.

53894502, Feb 14, 1995

Jan 11, 1993

8/003202

Christopher R. Kennedy - Newark DE
Birol Sonuparlak - Newark DE
Ali S. Fareed - Wilmington DE
John E. Garnier - Newark DE
Gerhard H. Schiroky - Hockessin DE

Lanxide Technology Company, LP - Newark DE

B22F 500
B05D 500

428552

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 matrix such that any desirable oxidant approaching, for example, a fiber reinforcement, would be scavenged by (e. g. , reacted with) the getterer. 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 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.

55298516, Jun 25, 1996

Jul 18, 1994

8/276386

Christopher R. Kennedy - Newark DE
Birol Sonuparlak - Newark DE
Ali S. Fareed - Wilmington DE
John E. Garnier - Newark DE
Gerhard H. Schiroky - Hockessin DE

Lanxide Technology Company - Newark DE

B22F 300
C04B 3552

428552

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 matrix such that any desirable oxidant approaching, for example, a fiber reinforcement, would be scavenged by (e. g. , reacted with) the getterer. 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 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.

62284533, May 8, 2001

Oct 27, 1997

8/958685

Ali Syed Fareed - Newark DE
John Edward Garnier - Newark DE
Gerhard Hans Schiroky - Newark DE
Christopher Robin Kennedy - Newark DE
Birol Sonuparlak - Longmont CO

Lanxide Technology Company, LP - Newark DE
AlliedSignal Composites Inc. - Newark DE

B32B 516

428 43

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.