Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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A Study on the Debinding Process of High Purity Alumina Ceramic Fabricated by DLP 3D Printing

DLP 3D 프린팅으로 제작된 고순도 알루미나 세라믹 탈지 공정 연구

  • Lee, Hyun-Been (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon)) ;
  • Lee, Hye-Ji (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon)) ;
  • Kim, Kyung-Ho (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon)) ;
  • Ryu, Sung-Soo (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon)) ;
  • Han, Yoonsoo (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (Icheon))
  • 이현빈 (한국세라믹기술원 이천분원 엔지니어링세라믹센터) ;
  • 이혜지 (한국세라믹기술원 이천분원 엔지니어링세라믹센터) ;
  • 김경호 (한국세라믹기술원 이천분원 엔지니어링세라믹센터) ;
  • 류성수 (한국세라믹기술원 이천분원 엔지니어링세라믹센터) ;
  • 한윤수 (한국세라믹기술원 이천분원 엔지니어링세라믹센터)
  • Received : 2020.11.19
  • Accepted : 2020.12.17
  • Published : 2020.12.28
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Abstract

The 3D printing process provides a higher degree of freedom when designing ceramic parts than the conventional press forming process. However, the generation and growth of the microcracks induced during heat treatment is thought to be due to the occurrence of local tensile stress caused by the thermal decomposition of the binder inside the green body. In this study, an alumina columnar specimen, which is a representative ceramic material, is fabricated using the digital light process (DLP) 3D printing method. DTG analysis is performed to investigate the cause of the occurrence of microcracks by analyzing the debinding process in which microcracks are mainly generated. HDDA of epoxy acrylates, which is the main binder, rapidly debinded in the range of 200 to 500℃, and microcracks are observed because of real-time microscopic image observation. For mitigating the rapid debinding process of HDDA, other types of acrylates PETA, PUA, and MMA are added, and the effect of these additives on the debinding rate is investigated. By analyzing the DTG in the 25 to 300℃ region, it is confirmed that the PETA monomer and the PUA monomer can suppress the rapid decomposition rate of HDDA in this temperature range.

Keywords

References

  1. Z. Chen, Z. Li, J. Li, C. Liu, C. Lao, Y. Fu, C. Liu, Y. Li, P. Wang and Y. He: J. Eur. Ceram. Soc., 39 (2019) 661. https://doi.org/10.1016/j.jeurceramsoc.2018.11.013
  2. T. D. Ngo, A. Kashania, G. Imbalzano, K. T. Q. Nguyen and D. Hui: Compos. B. Eng., 143 (2018) 172. https://doi.org/10.1016/j.compositesb.2018.02.012
  3. M. Krkobabic, D. Medarevic, S. Cvijic, B. Grujic and S. Ibric: Int. J. Pharm., 572 (2019) 118790. https://doi.org/10.1016/j.ijpharm.2019.118790
  4. C. Hinczewski, S. Corbel and T. Chartier: J. Eur. Ceram. Soc., 18 (1998) 583. https://doi.org/10.1016/S0955-2219(97)00186-6
  5. S. P. Gentry and J. W. Halloran: J. Eur. Ceram. Soc., 35 (2015) 1895. https://doi.org/10.1016/j.jeurceramsoc.2014.12.006
  6. H. B. Lee, H. J. Lee, K. H. Kim, K. M. Kim, S. S. Ryu and Y. S. Han: J. Korean. Powder Metall. Inst., 26 (2019) 508. https://doi.org/10.4150/KPMI.2019.26.6.508
  7. E. Johansson, O. Lidström, J. Johansson, O. Lyckfeldt and E. Adolfsson: Materials, 10 (2017) 138. https://doi.org/10.3390/ma10020138
  8. C. J. Bea and J. W. Halloran: Int. J. Appl. Ceram. Technol., 8 (2011) 1255. https://doi.org/10.1111/j.1744-7402.2010.02568.x
  9. S. H. Kim, H. S. Chang, S. H. Park and K. G. Song: Polymer (Korea), 34 (2010) 469. https://doi.org/10.7317/pk.2010.34.5.469
  10. F. Mohtadizadeh, M. J. Zohuriaan-Mehr, B. S. Hadavand and A. Dehghan: Prog. Org. Coat., 89 (2015) 231. https://doi.org/10.1016/j.porgcoat.2015.09.002
  11. C. J. Bea, A. Ramachandran, K. Chung and S. J. Park: J. Korean Ceram. Soc., 54 (2017) 470. https://doi.org/10.4191/kcers.2017.54.6.12