Carbon fabrics sequentially resin coated with (1) a metal-containing composition and (2) a boron-containing composition are laminated and carbonized

A carbon-carbon composite comprising a plurality of layers of fibrous carbon material in a carbon matrix, said carbon matrix including metal boride, wherein said resin matrix is formed from:

• a first portion of thermosetting resin surrounding the fibers comprised of a flexible thermosetting resin coating containing a refractory metal capable of reacting with boron to form a metal boride;
• and
• a second portion coated on top of said first portion comprised of a thermosetting resin containing a boron compound.

A fibrous carbon material impregnated with a thermosetting resin binder, said thermosetting binder including:

• a first portion surrounding the fibers comprised of a flexible thermosetting resin coating containing a refractory metal capable of reacting with boron to form a metal boride, at least a part of said metal being atomically dispersed and being chemically combined in said thermosetting resin in the form of a reaction product of either tungsten carbonyl and/or molybdenum carbonyl with pyrrolidine;
• and
• a second portion coated on top of said first portion comprised of a thermosetting resin containing a boron compound.

A fibrous carbon material impregnated with a thermosetting resin binder, said thermosetting binder including:

• a first portion surrounding the fibers comprised of a flexible thermosetting resin coating containing a refractory metal capable of reacting with boron to form a metal boride;
• and
• a second portion coated on top of said first portion comprised of a thermosetting resin containing a boron compound and a metal capable of reacting with boron to form a metal boride, at least a part of said metal in said second portion of thermosetting resin being atomically dispersed and being chemically combined in said thermosetting resin binder in the form of a reaction product of either tungsten carbonyl and/or molybdenum carbonyl with pyrrolidine.

A carbon-carbon composite comprising a plurality of layers of fibrous carbon material in a carbon matrix, said carbon matrix including metal boride, wherein said resin matrix is formed from:

• a first portion of thermosetting resin surrounding the fibers comprised of a flexible thermosetting resin coating containing a refractory metal capable of reacting with boron to form a metal boride, at least a part of said metal being atomically dispersed and being chemically combined in said thermosetting resin binder in the form of a reaction product of either tungsten carbonyl and/or molybdenum carbonyl and pyrrolidine;
• and
• a second portion coated on top of said first portion comprised of a thermosetting resin containing a boron compound.

A carbon-carbon composite comprising a plurality of layers of fibrous carbon material in a carbon matrix, said carbon matrix including metal boride, wherein said resin matrix is formed from:

• a first portion surrounding the fibers comprised of a flexible thermosetting resin coating containing a refractory metal capable of reacting with boron to form a metal boride;
• and
• a second portion coated on top of said first portion comprised of a thermosetting resin containing a boron compound and a metal capable of reacting with boron to form a metal boride, at least a part of said metal in said second portion of thermosetting resin being atomically dispersed and being chemically combined in said thermosetting resin binder in the form of a reaction product of either tungsten carbonyl and/or molybdenum carbonyl with pyrrolidine.