Abstract
The effect of 193 nm excimer laser radiation on the Knoop hardness and the elastic modulus of an ultra-phosphate glass is presented here. The experimental results reveal that the glass matrix undergoes a significant softening and volume dilation process for highly accumulated energy doses, where the Knoop hardness reduces by more than 15%, while following a single photon absorption rule. Further, during the early stages of the exposure a slight hardening process is observed. Finally, the elastic modulus is correlated with respect to the measured Knoop hardness.
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Michelakaki, I., Pissadakis, S. Atypical behaviour of the surface hardness and the elastic modulus of a phosphate glass matrix under 193 nm laser irradiation. Appl. Phys. A 95, 453–456 (2009). https://doi.org/10.1007/s00339-008-4905-4
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DOI: https://doi.org/10.1007/s00339-008-4905-4