Patent ID: 6821622
Filing Date: 2004-11-23
Classification: C04B,Y10T

Abstract:
An article comprising a thermally associated nondeleterious contaminated metal non-oxide coated three dimensional powder particle substrate produced by the process comprising: forming a reactant mixture comprising a powder particle substrate, a metal non-oxide precursor and an anion forming precursor said metal of the metal non-oxide coating being formed from a metal non-oxide precursor substantially uniformly preassociated with at least a part of the external surface of the powder particle substrate prior to the coating being formed and associated and said metal and the anion of said precursors being chemically different, reacting said reaction mixture at thermal conditions in a reaction zone effective to form and associate a metal non-oxide coating on at least a portion of the external surfaces of said powder substrate at said thermal conditions without essentially chemically altering substrate; said thermal conditions in said zone including an average particle residence time of less than about one second when at thermal conditions.