Study Of Surface Changes On Industrial Gasses With Afm, Fe-Sem, Edx, Snms And Lm - Part 2: Surface Changes By Water Drop Etching, Annealing At Atmosphere And Flame Treatment

One of the possible defects in sputter coating layers are cone shaped rods which originate from the float glass surface on the atmosphere side. The glass surface had been etched by wax-like corrosion droplets and holes were formed into the glass skin after washing. This results in inhomogeneity on the surface, which induces an inhomogenous deposition pattern of the material on the surface during the process of sputtering. In contrast, the tin bath side is shown to be an ideal coating surface without any inhomogeneity. In some cases, however, it could not be bent above the glass transition temperature in air due to formation of bloom patterns, which make the glass milky. The study revealed that phase separation is the ultimate cause of the observed bloom formation. In addition, sulphur flakes and needle-like nanocrystallites were detected on the tin bath.