Internally modified ceramic fiber

Yarn comprising fibers having a heterogeneouos composition comprising a continuous ceramic first phase and in the range of 0.05 to 10 weight percent of at least one in situ generated discontinuous second phase selected from the group consisting of metal and ceramic, the diameter of said second phase being at least one micrometer, the second phase being a string of spherical particles, a line of connected spheroidal shapes, or fibrils, said string, said line, and said fibrils all being oriented in the direction of the longitudinal axis of the fiber, said first and second phases being prepared from immiscible precursor liquids.

A woven fabric comprising fibers having a heterogeneous composition comprising a continuous ceramic first phase and in the range of 0.05 to 10 weight percent of at least one in situ generated discontinuous second phase selected from the group consisting of metal and ceramic, the diameter of said second phase being at least one micrometer, the second phase being a string of spherical particles, a line of connected spheroidal shapes, or fibrils, said string, said line, and said fibrils all being oriented in the direction of the longitudinal axis of the fiber, said first and second phases being prepared from immiscible precursor liquids.

A nonwoven web comprising fibers having a heterogeneous composition comprising a continuous ceramic first phase and in the range of 0.05 to 10 weight percent of at least one in situ generated discontinuous second phase selected from the group consisting of metal and ceramic, the diameter of said second phase being at least one micrometer, the second phase being a string of spherical particles, a line of connected spheroidal shapes, or fibrils, said string, said line, and said fibrils all being oriented in the direction of the longitudinal axis of the fiber, said first and second phases being prepared from immiscible precursor liquids.

A refractory article having a heterogeneous composition comprising a continuous ceramic first phase and in the range of 0.05 to 50 weight percent of at least one in situ generated discontinuous second phase selected from the group consisting of metal and ceramic, the diameter of said second phase being at least one micrometer, the second phase being a string of spherical particles, a line of connected spheroidal shapes, or fibrils, said string, said line, and said fibrils all being oriented in one direction, said first and second phases being prepared from immiscible precursor liquids.

A fiber having a heterogeneous composition comprising a continuous ceramic first phase and in the range of 0.05 to 10 weight percent of at least one in situ generated discontinuous metal second phase, the diameter of said second phase being at least one micrometer, the second phase being a string of spherical particles, a line of connected spheroidal shapes, or fibrils, said string, said line, and said fibrils all being oriented in the direction of the longitudinal axis of the fiber, said first and second phases being prepared from immiscible precursor liquids.

A fiber having a heterogeneous composition comprising a continuous ceramic first phase and in the range of 0.05 to 10 weight percent of at least one in situ generated discontinuous ceramic second phase, the diameter of said second phase being at least one micrometer, the second phase being a string of spherical particles, a line of connected spheroidal shapes, or fibrils, said string, said line, and said fibrils all being oriented in the direction of the longitudinal axis of the fiber, said first and second phases being prepared from immiscible precursor liquids.