Fiber reinforced glass matrix and glass-ceramic matrix composite articles

• US 5,372,868 A
• Filed: 09/30/1992
• Issued: 12/13/1994
• Est. Priority Date: 05/31/1990
• Status: Expired due to Term

• Current Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Allen, Glenn M., Gibler, Martin J., Prewo, Karl M., Chen, Otis Y.
• Primary Examiner(s): Loney, Donald J.
• Application Number:
  US07/954,598
• Time in Patent Office: 804 Days
• Field of Search: 428/178, 428/188, 428/244, 428/184, 428/187, 428/182, 428/174, 428/195, 428/384, 428/366, 428/367, 428/368, 428/167, 428/120, 428/172, 428/166, 428/228, 428/233, 428/238 , 428/268, 428/401, 501/404, 501/409, 501/257, 501/246, 501/89, 501/95
• US Class Current: 428/167
• CPC Class Codes: E04C 2/34 composed of two or more spaced sheet-like parts E04C2/32 takes precedence; spacers for cavity walls E04B2/44
• CPC Class Codes: Y10T 428/24182 Inward from edge of web or sheet
• CPC Class Codes: Y10T 428/24562 Interlaminar spaces
• CPC Class Codes: Y10T 428/2457 Parallel ribs and/or grooves
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/24661 Forming, or cooperating to form cells
• CPC Class Codes: Y10T 428/24744 Longitudinal or transverse tubular cavity or cell
• CPC Class Codes: Y10T 428/2916 including boron or compound thereof [not as steel]
• CPC Class Codes: Y10T 428/2918 including free carbon or carbide or therewith [not as steel]
• CPC Class Codes: Y10T 428/292 In coating or impregnation
• CPC Class Codes: Y10T 428/2949 Glass, ceramic or metal oxide in coating
• CPC Class Codes: Y10T 428/298 Physical dimension

Abstract

Fiber reinforced glass or glass-ceramic matrix composite articles are described which comprise spaced apart face sheets connected by ribs which extend between the face sheets. The fibers in the ribs are interwoven with the fibers in the face sheets, thereby producing a structure having high shear strength.

Claims

1. A fiber reinforced glass matrix or glass-ceramic matrix article comprising first and second face sheets in opposing relation to each other, and a rib extending film the first face sheet to the second face sheet, wherein said face sheets and rib are comprised of woven nonmetallic fibers in said glass matrix or glass-ceramic matrix, and the fibers in the rib are woven with the fibers in the face sheets, said fibers selected from the group consisting of graphite, carbides, borides, nitrides and oxides.

2. The article of claim 1, comprising a plurality of ribs.

3. The article of claim 2, wherein the fibers in said ribs extend from said first face sheet to said second face sheet.

4. The article of claim 2, wherein said ribs and face sheets define cells, and the cells are partially or completely filled with a material having a composition which is different from the matrix material.

5. The article of claim 2, wherein said ribs and face sheets define cells, and adjacent cells are in fluid communication with each other.

6. The article of claim 2, wherein the composition of the fibers in said ribs is the same as the composition of the fibers in said face sheets.

7. The article of claim 2, wherein the diameter of the fiber in said ribs is the same as the diameter of the fibers in said face sheets.

8. The article of claim 2, wherein the matrix is one or more of the materials selected from the group consisting of borosilicate, aluminosilicate, high silica glass, lithium aluminosilicate, magnesium aluminosilicate, barium magnesium aluminosilicate, calcium aluminosilicate, and barium aluminosilicate.

9. The article of claim 2, wherein the fibers have a diameter between 5 and 20 microns.

10. The article of claim 2, wherein the fibers have a diameter between 8 and 15 microns.

11. A fiber reinforced glass matrix or glass-ceramic matrix composite article comprising spaced apart first and second face sheets and one or more ribs extending from the first face sheet to the second face sheet, said ribs and face sheets defining cells therebetween, wherein said ribs and face sheets are comprised of fibers in a glass matrix or glass-ceramic matrix, and the fibers extend from said first face sheet through said ribs to said second face sheet, and the fibers in said ribs are woven with the fibers in said face sheets, and wherein said fibers are one or more of the materials selected from the group consisting of graphite, aluminum oxide and silicon carbide and said matrix is one or more of the materials selected from the group consisting of borosilicate, lithium aluminosilicate and barium aluminosilicate.

12. The article of claim 11, wherein the fibers have a diameter between about 5 and 40 microns.

13. The article of claim 11, wherein the fibers are graphite and the matrix is borosilicate.

14. The article of claim 11, wherein the fibers are aluminum oxide or silicon carbide, and the matrix borosilicate.

15. The article of claim 11, wherein the fibers are silicon carbide or aluminum oxide, and the matrix is lithium aluminosilicate.

16. A fiber reinforced glass or glass-ceramic matrix article comprising first and second face sheets in opposing relation to each other, and a plurality of ribs extending from the first face sheet to the second face sheet, wherein said ribs and face sheets define cells and adjacent cells are in fluid communication with each other, and wherein said face sheets and ribs:

are comprised of woven nonmetallic fibers in a glass or glass ceramic matrix, and the fibers in the ribs are woven with the fibers in the face sheets.

17. The article of claim 16, wherein the matrix is one or more of the materials selected from the group consisting of borosilicate, aluminosilicate, high silica glass, lithium aluminosilicate, magnesium aluminosilicate, barium magnesium aluminosilicate, calcium aluminosilicate and barium aluminosilicate.

18. The article of claim 16, wherein the fibers are one or more of the materials selected from the group consisting of graphite, carbides, borides, nitrides and oxides.

19. The article of claim 18, wherein the fibers have a diameter between 5 and 20 microns.

20. The article of claim 18, wherein the fibers have a diameter between 8 and 15 microns.