Patent ID: 6241858
Filing Date: 2001-06-05
Classification: C01P,C09C,C09D,C23C,Y10T

Abstract:
A method of forming a thin coalescence film on a powdered substrate material, comprising the steps of:directing an inorganic powdered substrate material comprising a silicatic material precoated with a high refractive index dielectric material into a vacuum chamber containing a coating material vaporization source;generating a coating material vapor from the coating material vaporization source in a low temperature dry vacuum process;exposing the powdered substrate material to the coating material vapor in a substantially uniform manner; andforming a thin coalescence film of coating material on the powdered substrate material that substantially replicates a surface microstructure of the powdered substrate material, the coating material selected from the group consisting of oxides, sub-oxides, nitrides, borides, sulfides, carbides, carbon, and combinations thereof.