Patent ID: 6811761
Filing Date: 2004-11-02
Classification: C04B,C23C

Abstract:
A method of preparing a &bgr; phase polycrystalline silicon carbide having a high thermal conductivity and low stacking faults comprising:a) placing at least one mandrel in a chemical vapor deposition chamber such that the at least one mandrel is orientated in the deposition chamber such that a flow of reactants in the deposition chamber is parallel to a surface of the at least one mandrel; b) generating the reactants into the deposition chamber as gases such that the reactants form silicon carbide in the deposition chamber; c) maintaining a deposition chamber temperature of greater than 1350Â° C. to about 1450Â° C.; and d) depositing the silicon carbide on the surface of the at least one mandrel at a rate of from about 0.1 &mgr;m/min. to about 3.0 &mgr;m/min. to form a silicon carbide having a thermal conductivity of at least about 375 W/mK.