Micro-Welding of Glass Substrate by YAG Laser – Effects of Substrate Temperature –
Hirofumi Suzuki*1,†, Tsuyoshi Funayama*2, Hideo Shibutani*3, and Osamu Horiuchi*4
1200, Matsumoto, Kasugai, Aichi 487-8501, Japan
*2ALPS ELECTRIC Co. Ltd, Miyagi, Japan
*3Kurume Institute of Technology, Fukuoka, Japan
*4Toyohashi University of Technology, Aichi, Japan
This paper deals with micro-welding of glass substrates using a YAG laser to prevent cracks. In order to fuse the glass substrates precisely using a YAG laser, a new glass welding method was proposed and developed in the previous report. In the method, two glass plates were made to overlap and the welded area of the glass surface was coated with absorbent. The YAG laser irradiated the surface, and the laser was absorbed in the coated area only. Therefore, only the coated area can be welded and the glass surface is expected to be clear. However, in the previous report, some micro cracks generated by the thermal shock of the YAG laser appeared on the fused area of the glass substrates. In this study, it is proposed that pre-heating the substrates decreses the heat shock, producing a crack-free surface of the fused area. In the pre-heated welding experiments, the substrate temperature and laser power are changed, and the welding surface and welding strength are evaluated. It is clarified from the experiments, that the glass plates can be welded without a crack using pre-heated welding.
-  G. Koehler and H. Mueller, “Welding of quartz glass with laser,” DVS Ber, Vol.184, No.159, 1997.
-  T. Tamaki, W. Watanabe, J. Nishii, and K. Itoh, “Welding of transparent materials using femtosecond laser pulses,” Jpn. J. Appl. Phys., Vol.44, pp. L687-L689, 2005.
-  I. Miyamoto, A. Horn, and J. Gottmann, “Local melting of glass material and its application to direct fusion welding by Ps-laser pulses,” J. Laser Micro/Nanoengineering, Vol.2, No.7, p. 14, 2007.
-  I. Miyamoto, A. Horn, J. Gottmann, D. Wortmann, and F. Yoshino, “Fusion welding of glass using femtosecond laser pulses with high-repetition rates,” J. Laser Micro/ Nanoengineering, Vol.2, pp. 57-63, 2007.
-  T. Funayama, H. Suzuki, H. Arakane, H. Shibutani, and O.Horiuchi, “Micro-welding of glass substrate by YAG laser (1st report) – Proposal of new joint method using YAG Laser and it’s feasibility study –,” The Japan Society for Precision Engineering, Vol.68, No.9, pp. 1231-1235, 2002 (in Japanese).
-  A. Chiba, H. Hidai, S. Matsusaka, and N. Morita, “Dynamic thermoelastic behavior in sheet glass generated by pulsed laser irradiation using a one-dimensional model,” Int. J. Automation Technology, Vol.8, No.6, pp. 847-854, 2014.
-  K. Yamada, K. Oiso, A. Hosokawa, and T Ueda, “Studies on cleaving mechanism of silicon wafer with pulsed YAG laser,” The Japan Society for Precision Engineering, Vol.67, No.11, pp. 1861-1865, 2011.
-  K. Yamada, K. Oiso, A. Hosokawa, and T. Ueda, “Cleaving process of brittle materials with pulsed YAG laser,” The Japan Society for Precision Engineering, Vol.69, No.1, pp. 120-124, 2003.
-  N. Sumi, “Propagation of thermal stress waves in finite medium under laser-pulse heating,” The Japan Society for Precision Engineering, Vol.64, No.9, pp. 2257-2262, 1998.
-  J. Montoya and A. Goncharov, “Finite element calculations of the time dependent thermal fluxes in the laser-heated diamond anvil cell,” J. Appl. Phys., Vol.111, 112617, 2012.
-  Y. Shanjani and Toyserkani, “Selective laser sintering of calcium polyphosphate: finite element modeling and experiments,” J. of Laser Micro/Nanoengineering, Vol.4, No.1, pp. 28-34, 2009.
-  E. Rainey, J. Hemlund, and A. Kavner, “Temperature distribution in the laser-heated diamond anvil cell from 3-D numerical modeling,” J. Appl. Phys., Vol.114, 204905, 2013.
-  K. Yamamoto, N. Hasaka, H. Morita, and E. Ohmura, “Three dimensional thermal stress analysis on laser scribing of glass,” Precision Engineering, Vol.32, pp. 301-308, 2008.
-  A. Chiba, S. Matsusaka, H. Hidai, and N. Morita, “Study of thermal stress behavior of sheet glass during laser irradiation using one-dimensional elastic wave model,” J. of Advanced Mechanical Design, System and Manufacturing, Vol.8, No.1, pp. 1-11, 2014.
-  T. Nakamoto, N. Shirakawa, K. Kishida, and K. Tanaka, “Synthesis of porous titanium with directional pores by selective laser melting,” Int. J. Automation Technology, Vol.6, No.5, pp. 597-603, 2012.
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