Diamond reinforced composite material

摘要

An improved adhesion or bonding between diamond fibers and a matrix of at least one organic polymer such as a resin is achieved in a composite material reinforced with vapor-deposited diamond. To improve bonding to the matrix, hydrogen is removed from the surface of vapor-deposited diamond fiber. This can be achieved by heating the diamond under an oxidative atmosphere at a temperature of about 150 DEG C. to about 800 DEG C., or under a non-oxidative atmosphere at a temperature of about 800 DEG C. to about 1500 DEG C. The surface of the vapor-deposited diamond, which contains not more than about 1x1015/cm2 of hydrogen atoms, is bonded to the matrix of resin for example with sufficient strength. To further improve bonding, diamond doped with B or N is employed as the reinforcing material or at least a surface layer thereof.