Patent ID: 6756119
Filing Date: 2004-06-29
Classification: C23C,Y10T

Abstract:
An article comprising a thermally associated nondeleterious contaminated metal oxyanion coated three dimensional powder particle substrate produced by the process comprising: forming a reactant mixture comprising powder particle substrates, a metal oxyanion precursor, an anion forming precursor said metal and the anion of said precursors being chemically different and an oxy precursor chemically the same or different than one or both of said metal oxyanion and anion forming precursor, reacting said reaction mixture at fast reaction and elevated temperature conditions in a reaction zone effective to form a metal oxyanion coating on at least a portion of the surfaces of said powder substrate at said conditions without substantially adversely affecting the solid integrity of the substrate; said fast reaction conditions in said zone including an average particle residence time of less than about one second when at fast reaction, elevated temperature conditions.