Materials Transactions Online

Materials Transactions, Vol.58 No.02 (2017) pp.127-130
© 2016 The Japan Institute of Metals and Materials

Decrease in Process Pressure for Forming Au-to-Au Joints via Reduction Reaction of Ag2O

Taro Inoue1, Tomo Ogura1 and Akio Hirose1

1Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 575-0871, Japan

In this study, we were able to form strong Au-to-Au joints using a silver oxide (Ag2O) paste sintered at 300℃. We successfully reduced the processing pressure applied during sintering by 0.5 MPa by optimizing the sintering conditions. Through X-ray diffraction phase analysis as well as crystallite size calculations, we observed a significant reduction (27%) in the crystallite size as the heating rate was increased from 10℃/min to 180℃/min. Scanning electron microscopy cross-sectional observations confirmed that the high heating rate facilitated sintering within the bonding layer. The bonded shear strength (maximum of 24 MPa) was higher than that of the conventional Pb-5Sn solder (18 MPa), proving the suitability of Ag2O paste as a potential lead-free bonding material for high-temperature applications.

[doi:10.2320/matertrans.MA201602]

(Received 2016/05/24; Accepted 2016/07/26; Published 2017/01/25)

Keywords: Ag2O, nanoparticle, low-pressure sintering, process control

PDF(member)PDF (member) PDF(organization)PDF (organization) Order DocumentOrder Document Table of ContentsTable of Contents

REFERENCES

  1. E. Ide, S. Angata, A. Hirose and K.F. Kobayashi: Acta Mater. 53 (2005) 2385-2393.
  2. E. Ide, A. Hirose and K.F. Kobayashi: Mater. Trans. 47 (2006) 211-217.
  3. Y. Akada, H. Tatsumi, T. Yamaguchi, A. Hirose, T. Morita and E. Ide: Mater. Trans. 49 (2008) 1537-1545.
  4. T. Morita, E. Ide, Y. Yasuda, A. Hirose and K. Kobayashi: Jpn. J. Appl. Phys. 47 (2008) 6615-6622.
  5. T. Ogura, M. Nishimura, H. Tatsumi, W. Takahara and A. Hirose: Mater. Trans. 53 (2012) 2085-2090.
  6. T. Ogura, Y. Konaka, E. Ide, T. Morita and A. Hirose: Q. J. Jpn. Weld. Soc. 31 (2013) 197-201.
  7. T. Morita, Y. Yasuda, E. Ide, Y. Akada and A. Hirose: Mater. Trans. 49 (2008) 2875-2880.
  8. A. Hirose, H. Tatsumi, N. Takeda, Y. Akada, T. Ogura, E. Ide and T. Morita: J. Phys. Conf. Ser. 165 (2009) 012074.
  9. T. Morita, Y. Yasuda, E. Ide and A. Hirose: Mater. Trans. 50 (2009) 226-228.
  10. A. Hirose, N. Takeda, H. Tatsumi, Y. Akada, T. Ogura, E. Ide and T. Morida: Mater. Sci. Forum 706-709 (2012) 2962-2967.
  11. T. Ito, T. Ogura and A. Hirose: J. Electron. Mater. 41 (2012) 2573-2579.
  12. T. Yagishita, T. Ogura and A. Hirose: Mater. Trans. 54 (2013) 866-871.
  13. T. Ogura, T. Yagishita, S. Takata, T. Fujimoto and A. Hirose: Mater. Trans. 54 (2013) 860-865.
  14. S. Takata, T. Ogura, E. Ide, T. Morita and A. Hirose: J. Electron. Mater. 42 (2013) 507-515.
  15. T. Ogura, S. Takata, M. Takahashi and A. Hirose: Mater. Trans. 56 (2015) 1030-1036.
  16. W. Li and L. Gao: J. Eur. Cera. Soc. 20 (2000) 2441-2445.
  17. D.E. García, J. Seidel, R. Janssen and N. Claussen: J. Eur. Cera. Soc. 15 (1995) 935-938.
  18. D.-J. Chen and M.J. Mayo: Nanostructured Mater. 2 (1993) 469-478.
  19. A.L. Patterson: Phys. Rev. 56 (1939) 978-982.
  20. D. Chiche, M. Digne, R. Revel, C. Chanéac and J.-P. Jolivet: J. Phys. Chem. C 112 (2008) 8524-8533.
  21. L.A. Stanciu, V.Y. Kodash and J.R. Groza: Metall. Mater. Trans., A 32 (2001) 2633-2638.
  22. N. Eustathopoulos, M. G. Nicholas, B. Drevet, eds., Wettability at high temperatures, Elsevier, 1999.
  23. V.V. Srdić, M. Winterer and H. Hahn: J. Am. Ceram. Soc. 83 (2000) 729-736.
  24. M. Mazaheri, A.M. Zahedi, M. Haghighatzadeh and S.K. Sadrnezhaad: Ceram. Int. 35 (2009) 685-691.


[JIM HOME] [JOURNAL ARCHIVES]

© 2016 The Japan Institute of Metals and Materials
Comments to us : editjt@jim.or.jp