Patent ID: 6338868
Filing Date: 2002-01-15
Classification: C09D,C23C,H01L,Y10T

Abstract:
A method for the formation of a siliceous coating film on the surface of a substrate which comprises the steps of:(a) coating the surface of the substrate with a coating solution of a modified polysilazane compound, which is a reaction product of a polysilazane compound and a dialkyl alkanol amine, in an organic solvent to form a coating layer; (b) drying the coating layer to form a dried coating layer; (c) subjecting the dried coating layer to a first heat treatment at a temperature in the range from 350 to 450Â° C. for a length of time in the range from 10 to 60 minutes; and (d) subjecting the coating layer to a second heat treatment at a temperature in the range from 550 to 800Â° C. for a length of time in the range from 0.5 to 60 minutes.