Preparation and Characterization of Silica Films on Stainless Steels Substrate by Dip Coating with PDMS/PHPS Solution

Abstract

Silica films were prepared on stainless steel substrates by dip coating in a perhydropolysilazane (PHPS)/polydimethylsilazane (PDMS) solution. The effect of thermal treatment on the conversion from PDMS/PHPS to silica was investigated in detail with SEM and FTIR. A crack-free silica film was obtained with solutions containing PDMS. The mechanical properties of silica films were examined by performing the pencil hardness test and the Vickers hardness test. Silica films made from solutions containing PDMS were flexible. The corrosion resistance properties were investigated using a combined cyclic corrosion test instrument. Silica film is not adhered the rust even if PDMS was added.