Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2006-06-16
2009-08-25
Speer, Timothy M (Department: 1794)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S701000, C428S702000, C416S24100B
Reexamination Certificate
active
07579094
ABSTRACT:
The present invention is a ceramic matrix composite turbine engine component, wherein the component has a direction of maximum tensile stress during normal engine operation. The component comprises a plurality of biased ceramic plies, wherein each biased ply comprises ceramic fiber tows, the tows being woven in a first warp direction and a second weft direction, the second weft direction lying at a preselected angular orientation with respect to the first warp direction, wherein a greater number of tows are woven in the first warp direction than in the second weft direction, and wherein a number of tows in the second weft direction allows the biased plies to maintain their structural integrity when handled. The plurality of biased plies are laid up in a preselected arrangement to form the component, and a preselected number of the plurality of biased plies are oriented such that the orientation of the first warp direction of the preselected number of biased plies lie about in the direction of maximum tensile stress during normal engine operation. A coating is applied to the plurality of biased plies. The coating is selected from the group consisting of BN, SiC, and combinations thereof. A ceramic matrix material lies in interstitial regions between the tows of each biased ply and the interstitial region between the biased plies.
REFERENCES:
patent: 3669158 (1972-06-01), Phillips
patent: 3818082 (1974-06-01), Burns et al.
patent: 3819461 (1974-06-01), Saffadi
patent: 3925587 (1975-12-01), Park
patent: 3991248 (1976-11-01), Bauer
patent: 4384021 (1983-05-01), Aoyama
patent: 4714642 (1987-12-01), McAliley et al.
patent: 5015540 (1991-05-01), Borom et al.
patent: 5298303 (1994-03-01), Kerr et al.
patent: 5330854 (1994-07-01), Singh et al.
patent: 5336350 (1994-08-01), Singh
patent: 5370911 (1994-12-01), Throne et al.
patent: 5436042 (1995-07-01), Lau et al.
patent: 5609912 (1997-03-01), Lackey et al.
patent: 5716671 (1998-02-01), Pak et al.
patent: 5952100 (1999-09-01), Corman et al.
patent: 6024898 (2000-02-01), Steibel et al.
patent: 6258737 (2001-07-01), Steibel et al.
patent: 6270851 (2001-08-01), Lee et al.
patent: 6280550 (2001-08-01), Steibel et al.
patent: 6294125 (2001-09-01), Bridgewater et al.
patent: 6350713 (2002-02-01), Petrak
patent: 98/17505 (1998-04-01), None
Luthra, “Melt Infiltrated (MI) SiC/SiC Composites for Gas Turbine Applications”, GE Research & Development Center Technical Information Series, 2001CRD112, Oct. 2001, Class 1.
Carper Douglas Melton
Flandermeyer Brian Keith
Steibel James Dale
Subramanian Suresh
General Electric Company
McNees Wallace & Nurick LLC
Speer Timothy M
LandOfFree
Use of biased fabric to improve properties of SiC/SiC... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Use of biased fabric to improve properties of SiC/SiC..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of biased fabric to improve properties of SiC/SiC... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4096702