Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Mechanical Property and Crystallization of Glass by Femtosecond Laser Pulses

Femto Second Laser Pulse에 의한 유리의 결정화 및 기계적 특성

  • Cha, Jae-Min (School of Materials Science and Engineering, Pusan National University) ;
  • Moon, Pil-Yong (School of Materials Science and Engineering, Pusan National University) ;
  • Kim, Dong-Hyun (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Sung-Je (School of Materials Science and Engineering, Pusan National University) ;
  • Cho, Sung-Rak (Nano Machining Group, Korea Institute of Machinery and Materials) ;
  • Ryu, Bong-Ki (School of Materials Science and Engineering, Pusan National University)
  • 차재민 (부산대학교 무기재료공학과) ;
  • 문필용 (부산대학교 무기재료공학과) ;
  • 김동현 (부산대학교 무기재료공학과) ;
  • 박성제 (부산대학교 무기재료공학과) ;
  • 조성학 (나노공정그룹 지능형정밀기계연구부 한국기계연구원) ;
  • 류봉기 (부산대학교 무기재료공학과)
  • Published : 2005.06.01
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Abstract

Generally, the strength achieved of glass-ceramics is higher as is the fracture toughness, as compared with the original glass. This improvement is due to the microstructure consisting of very small crystals. In this study, Ag-doped $45SiO_2-24CaO-24Na_2O-4P_2O_5$ glasses were irradiated to strengthen by the crystallization using Femto second laser Pulses. Through the UV/VIS spectroscope, XRD, Nano-indenter and SEM etc., heat-treated and irradiation of laser pulses without heat-treated samples were analyzed. Two kinds of samples, heat-treated and laser irradiated without heat-treated samples, showed the peaks in the same wavelength near 360 nm. Especially, samples irradiated by 140 mW laser with XYZ stage having at the rate of 100$\~$l000 $\mu$m/s had the largest absorption peak among them, and heat-treated samples was shown lower absorption range than over 90 mW laser irradiated samples. Moreover, samples irradiated by laser had higher values ($4.4\~4.56{\times}10^{-3}(Pa)$) of elastic modulus which related with strength of glass than values of heat-treated samples and these are 1.2$\~$1 .5 times higher values than them of mother glass.

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References

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