Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Using organometallic or organosilicon intermediate
Patent
1995-01-17
1998-07-21
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Using organometallic or organosilicon intermediate
264626, 264627, 264639, 26417211, 26417214, 26417215, 264DIG19, 264DIG26, 419 10, 419 11, D01F 910, C04B 3500
Patent
active
057831394
ABSTRACT:
A ceramic fiber is made by spinning a plurality of polymeric materials each including at least one ceramic precursor into a composite fiber, and then pyrolysing the composite fiber to form a composite ceramic fiber of non-homogeneous composition. A preferred ceramic material for use in this method is made by pyrolysing an organo-metallic compound dispersed in an organic polymer carrier. The principal products are tailored matrix-compatible ceramic fibers for reinforcements, and have a core-sheath structure made by coaxial spinning methods. A core of desired mechanical properties, such as silicon carbide, is given a chemically appropriate surface layer. Transition metals compounds are preferred, in a range of organo-metallic ceramic precursors that include carborane derivatives. Allowed additives include metal-silicon compounds, other ceramics, corresponding metal oxides and elementary metals.
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