Silicon nitride based ceramic fibers, process of preparing same and composite material containing same
US5032551A · kind A · utility
9Cited by
11References
17Claims
0Family size
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Key dates
| Filing date | Mar 2, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Mar 2, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F9/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Silicon nitride based ceramic fibers containing Si, N, O and at least one metal M in amounts providing the atomic ratios N/Si of 0.3 to 3, O/Si of 0.0001 to 15 and M/Si of 0.001 to 5 and exhibiting an X-ray small angle scattering such that the ratio of the intensity of the small angle scattering of the fibers to that of air is 1 to 20. The ceramic fibers are produced by spinning of a polymetallosilazane into fibers and calcining the spun fibers and are useful as reinforcing fibers for composite artices having a metal or resin matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.