1990 Volume 63 Issue 8 Pages 470-473
In this study the effect of damages of a white coating film on its contamination resistance was discussed. It was recognized the contamination of a damaged white coating film was affected by the degree of the damage, temperature, and humidity.
The cause of the contamination was investigated with Raman spectroscopy, electron microscope, and etc.. Many small holes were observed on the damaged coating film. These holes were the traces of TiO2 pigments which were pulled out from the film by a damage like polishing. In the holes, Carbon, Si, Si-Al, and Si-Al-Fe were detected.
The contamination of the damaged coating film was caused by the attachment of substances in the atmosphere around the holes of the damaged coating film.