, and the coating samples were pyrolysized at 800˚C under argon to convert the polyphenylcarbosilane ... Thermal oxidation as a curing step was carried out at 200˚C for crosslinking of the polyphenylcarbosilane ... endure strong acids, SiOC coating on metal substrate was carried out by dip coating method using 20wt% polyphenylcarbosilane