Ceramic matrix composite having improved interlaminar strength
US6617013B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Aug 1, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/298
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A ceramic matrix composite material (10) having a plurality of interlaminar stitches (16) as shown in FIG. 1. The stitches are formed by directing laser energy into the material to melt and recast zones of the material in a direction transverse to the layers of reinforcing fibers(12). The stitches not only improve the interlaminar strength of the material, but they also increase the through-thickness thermal conductivity of the material, thereby reducing thermal-induced stresses. The zones of recast material (18) may define holes (20) extending at least partially through the thickness of the material. The holes may be filled with a filler material (24), thereby mitigating any adverse loss-of-area effect created by the holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.