Patent ID: 6056820
Filing Date: 2000-05-02
Classification: C30B,Y10T

Abstract:
Apparatus for growing high purity silicon carbide crystals, comprising:(A) a crystal growth furnace having a central longitudinal axis;(B) a source of high purity silicon at a first location within said furnace;(C) a seed crystal at a second location displaced from said first location, within said furnace;(D) a heating system operable to heat said silicon to a temperature sufficient to cause melting and vaporization of said silicon;(E) a gas permeable high purity porous carbon-containing member disposed between said source of high purity silicon and said seed crystal such that said vaporized silicon passes through said porous carbon-containing member and reacts therewith;(F) said heating system being operable to produce a temperature within said furnace system whereby products of the reaction of said vaporized silicon and said porous carbon-containing member are deposited as silicon carbide on said seed crystal and subsequent growth thereon.