한국재료학회지 (Korean Journal of Materials Research)

  • 제33권2호
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  • Pages.63-70
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  • 2023
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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분쇄 공정의 온도와 분산제 사용이 알루미늄계 금속유리의 결정화에 미치는 영향

Effect of Temperature and Surfactant on Crystallization of Al-Based Metallic Glass during Pulverization

  • 김태양 (한국기술교육대학교 에너지신소재화학공학부) ;
  • 임채윤 (한국기술교육대학교 에너지신소재화학공학부) ;
  • 김석준 (한국기술교육대학교 에너지신소재화학공학부)
  • Tae Yang Kim (Energy, Materials and Chemical Engineering, Korea University of Technology and Education) ;
  • Chae Yoon Im (Energy, Materials and Chemical Engineering, Korea University of Technology and Education) ;
  • Suk Jun Kim (Energy, Materials and Chemical Engineering, Korea University of Technology and Education)
  • 투고 : 2023.01.25
  • 심사 : 2023.01.26
  • 발행 : 2023.02.27
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초록

In this study, crystallization was effectively suppressed in Al-based metallic glasses (Al-MGs) during pulverization by cryo-milling by applying an extremely low processing temperature and using a surfactant. Before Al-MGs can be used as an additive in Ag paste for solar cells, the particle sizes of the Al-MGs must be reduced by milling. However, during the ball milling process crystallization of the Al-MG is a problem. Once the Al-MG is crystallized, they no longer exhibit glass-like behavior, such as thermoplastic deformation, which is critical to decrease the electrical resistance of the Ag electrode. The main reason for crystallization during the ball milling process is the heat generated by collisions between the particles and the balls, or between the particles. Once the heat reaches the crystallization temperature of the Al-MGs, they start crystallization. Another reason for the crystallization is agglomeration of the particles. If the initially fed particles become severely agglomerated, they coalesce instead of being pulverized during the milling. The coalesced particles experience more collisions and finally crystallize. In this study, the heat generated during milling was suppressed by using cryo-milling with liquid-nitrogen, which was regularly fed into the milling jar. Also, the MG powders were dispersed using a surfactant before milling, so that the problem of agglomeration was resolved. Cryo-milling with the surfactant led to D50 = 10 um after 6 h milling, and we finally achieved a specific contact resistance of 0.22 mΩcm2 and electrical resistivity of 2.81 μΩcm using the milled MG particles.

키워드

과제정보

Author S.J.K. received funding from the "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (MOE) (2021RIS-004), National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2021R1F1A1047375), and the Education and Research Promotion Program of KOREATECH in 2020 and 2021. XRD, PSA, and SEM analyses were performed at the Cooperative Equipment Center at KOREATECH.

참고문헌

  1. J. G. Jang, B. M. Park, S. Lim and H. J. Chang, Korean J. Mater. Res., 24, 434 (2014).
  2. Y. S. Kim, J. R. Lim, W. G. Shin, S. W. Ko, Y. C. Ju, H. M. Hwang, H. S. Chang and G. H. Kang, Korean J. Mater. Res., 29, 720 (2019).
  3. J. K. Lee, S. H. Park and G. S. Yang, Korean J. Mater. Res., 18, 283 (2008).
  4. E. Van Kerschaver and G. Beaucarne, Prog. Photovoltaics, 14, 107 (2006).
  5. S. J. Kim, S. Y. Kim, J. M. Park, J. N. Heo, J. H. Lee, S. M. Lee, D. H. Kim, W. T. Kim, K. R. Lim, D. Kim, S. C. Park, H. K. Kim, M. C. Song, J. Park, S. S. Jee and E. S. Lee, Appl. Phys. Lett., 101, 064106 (2012).
  6. S. S. Jee, S. Y. Kim, S. J. Kim, J. M. Park, K. H. Lee, J. H. Lee, K. H. Park, J. N. Heo, S. M. Lee, I. T. Han, K. R. Lim, W. T. Kim, D. H. Kim and E. S. Lee, Appl. Phys. Lett., 101, 084104 (2012).
  7. S. Jun Kim, S. Yun Kim, J. Man Park, K. Hwan Park, J. Ho Lee, S. Mock Lee, I. Taek Han, D. Hyang Kim, K. Ram Lim, W. Tae Kim, J. Cheol Park, S. Soo Jee and E. S. Lee, Appl. Phys. Lett., 103, 063903 (2013). https://doi.org/10.1063/1.4818124
  8. S. Y. Kim, S. J. Kim, S. S. Jee, J. M. Park, K. H. Park, S. C. Park, E. A. Cho, J. H. Lee, I. Y. Song, S. M. Lee, I. T. Han, K. R. Lim, W. T. Kim, J. C. Park, J. Eckert, D. H. Kim and E. S. Lee, Sci. Rep., 3, 1 (2013).
  9. B. U. Min, J. H. Lee, H. J. Park, G. T. Jeon, J. I. Jeong, S. H. Lee and S. J. Kim, Sci. Rep., 10, 1 (2020).
  10. C. A. Angell and D. L. Smith, J. Phys. Chem., 86, 3845 (1982).
  11. H. W. Yang, W. P. Tong, X. Zhao, L. Zuo and J. Q. Wang, J. Alloys Compd., 473, 347 (2009).
  12. J. M. Park, K. H. Park, E. S. Park, S. M. Hong, S. Y. Kim, S. S. Jee, E. S. Lee, S. J. Kim, K. B. Kim, D. H. Kim and J. Eckert, Metall. Mater. Trans. A, 46, 2443 (2015).