2022 Volume 7 Pages 103-109
Pulsed Nd:YAG laser was irradiated to two glasses with the different lead content and a lead-free glass for the radidamatagioe no sf hthiee ldleading.-free Irradiglatass ionwas damviasugeally andco mnfirmechanied calin prthe opelasertri eisr oradf eiaaticohn g cloansds iwtioenre o ifn tvheiss tsigtuadteyd, .t hAel tihrroaudgiaht nioon i draramdaigate ioin n the lead glasses could be recognized and the lead glass with the high lead content tends to cause the higher irradiation damage. Microhardness, elastic modulus, fracture toughness, and thermal shock fracture toughness were evaluated by indentation technique with a Vickers indenter. These values of the lead glasses were 82 - 75 %, 90 – 80 %, 71 – 65 %and 73 – 61 % of the lead-free glass, respectively. The microhardness obtained using the conical indenter in black irradiated area was 10 % smaller than that in unirradiated area of the lead glass with the lead content of 55 wt%.
