Free Form Fibers, LLC

Ramkiran Goduguchinta

John L Schneiter

Joseph Pegna

Kirk L Williams

Shay Llewellyn Harrison

A method and apparatus for forming a plurality of fibers from (e.g., CVD) precursors, including a reactor adapted to grow a plurality of individual fibers; and a plurality of independently controllable lasers, each laser of the plurality of lasers growing a respective fiber. A high performance fiber (HPF) structure, including a plurality of fibers arranged in the structure; a matrix disposed between the fibers; wherein a multilayer coating is provided along the surfaces of at least some of the fibers with an inner layer region having a sheet-like strength; and an outer layer region, having a particle-like strength, such that any cracks propagating toward the outer layer from the matrix propagate along the outer layer and back into the matrix, thereby preventing the cracks from approaching the fibers. A method of forming an interphase in a ceramic matrix composite material having a plurality of SiC fibers, which maximizes toughness by minimizing fiber to fiber bridging, including arranging a plurality of SiC fibers into a preform; selectively removing (e.g., etching) silicon out of the surface of the fibers resulting in a porous carbon layer on the fibers; and replacing the porous carbon layer with an interphase layer (e.g., Boron Nitride), which coats the fibers to thereby minimize fiber to fiber bridging in the preform.

High strength ceramic fibers and methods of fabrication

A fully dense ceramic and/or other inorganic fiber containing elongated crystal grains in and around the fiber center and oriented along the fiber axis, with a smooth transition to more equiaxed grains towards the radial periphery of the fiber, and method for producing such.

Radially graded fully dense inorganic filaments for enhanced strength and creep resistance

A multi-component or 'composite' inorganic fiber comprising a nano-scale contiguous collection of a plurality of packed unique phases of material randomly interspersed throughout the fiber body, without unwanted impurities, and a method for producing same. Said phases include three or more foundational chemical elements from the Periodic Table mixed together during fiber production, producing distinct material phases interspersed throughout the fiber volume.

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Ballston Lake, NY, United States of America

Ramkiran Goduguchinta