초록 ▼

Special C-shaped carbon fibers, melt spun from mesophase pitch, were used as micro-molds to form nested dual fibers and ceramic fibers. By wetting these carbon fibers in a wet chemical precursor, and subsequently heat treating, ceramic fibers of various compositions were formed. Also, through proper

Special C-shaped carbon fibers, melt spun from mesophase pitch, were used as micro-molds to form nested dual fibers and ceramic fibers. By wetting these carbon fibers in a wet chemical precursor, and subsequently heat treating, ceramic fibers of various compositions were formed. Also, through proper control, carbon-ceramic nested fibers were produced. The ceramic materials were silica, alumina, silicon carbide, hydroxyapatite, and zirconia. The ceramic fibers could be formed with non-circular transverse cross-sectional perimeters.

대표청구항 ▼

A piggyback method of forming a ceramic fiber from a wet chemical precursor including a metal oxide and being capable of being sintered to form ceramic material, the method consisting essentially of: providing an elongated micro-mold carrier fiber, said carrier fiber being formed of a material other

A piggyback method of forming a ceramic fiber from a wet chemical precursor including a metal oxide and being capable of being sintered to form ceramic material, the method consisting essentially of: providing an elongated micro-mold carrier fiber, said carrier fiber being formed of a material other than ceramic material and to which said precursor adheres, said elongated carrier fiber defining an elongated cavity therein and over a substantial portion of the length thereof; wetting the cavity of said carrier fiber with the wet chemical precursor; setting the chemical precursor in the cavity of said carrier fiber until the wet chemical precursor is nested in the cavity; placing said carrier fiber with the nested chemical precursor into an oxygen-free environment; heating said carrier fiber with the nested chemical precursor in the oxygen free environment to a temperature sufficient to sinter the nested chemical precursor into a ceramic fiber and form a dual fiber having a ceramic fiber nested in said carrier fiber; and removing said carrier fiber of said dual fiber to yield said ceramic fiber.