CA2-26
Regimes of eroded glass surfaces
S. Benterki1, C. Bousbaa1, N. Laouar2
Non Metallic Materials Laboratory, Optics and Precision Mechanics Instituty.
Ferhat. Abbas University, Setif-1- 19000, Algeria
2
Applied Optics Laboratory, Optics and Precision Mechanics Instituty.Ferhat.
Abbas University, Setif-1- 19000, Algeria
Email: smailslh@yahoo.fr
1
The light scattering of glass surfaces after different sand blasting
durations is studied by transmission measurements. The results
suggest that there are three stages during eroding, according to their
optical transmission and roughness. These stages are distinguished by
the different curve characterizing shape sloppy. The erosion velocity
in the first and the second stage is about 0.015 and 0.08 µm.s-1
respectively and it is practically nil in the third stage. By increasing
the sand blasting durations up to 10 min, the roughness increases from
0.052 up to 2.45 µm and the specular transmission decrease regularly
from 91.5% to a saturated state that corresponds to 16%, while the
scattered transmission is about 84%. We noticed that the loss of the
transmission is essentially attributed to reflection and scatter.
Microscopic observations reveal that the different damage states are
correlated with the three stages.
Keywords: glass, scattering, transmission, reflection, sand
blasting, roughness.
Matériaux 2015