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http://dx.doi.org/10.4150/KPMI.2020.27.6.490

A Study on the Debinding Process of High Purity Alumina Ceramic Fabricated by DLP 3D Printing  

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))
Publication Information
Journal of Powder Materials / v.27, no.6, 2020 , pp. 490-497 More about this Journal
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
$Al_2O_3$; 3D Printing; Debinding; Binder; Thermal analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
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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.   DOI
2 T. D. Ngo, A. Kashania, G. Imbalzano, K. T. Q. Nguyen and D. Hui: Compos. B. Eng., 143 (2018) 172.   DOI
3 M. Krkobabic, D. Medarevic, S. Cvijic, B. Grujic and S. Ibric: Int. J. Pharm., 572 (2019) 118790.   DOI
4 C. Hinczewski, S. Corbel and T. Chartier: J. Eur. Ceram. Soc., 18 (1998) 583.   DOI
5 S. P. Gentry and J. W. Halloran: J. Eur. Ceram. Soc., 35 (2015) 1895.   DOI
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.   DOI
7 C. J. Bea and J. W. Halloran: Int. J. Appl. Ceram. Technol., 8 (2011) 1255.   DOI
8 S. H. Kim, H. S. Chang, S. H. Park and K. G. Song: Polymer (Korea), 34 (2010) 469.   DOI
9 F. Mohtadizadeh, M. J. Zohuriaan-Mehr, B. S. Hadavand and A. Dehghan: Prog. Org. Coat., 89 (2015) 231.   DOI
10 C. J. Bea, A. Ramachandran, K. Chung and S. J. Park: J. Korean Ceram. Soc., 54 (2017) 470.   DOI
11 E. Johansson, O. Lidström, J. Johansson, O. Lyckfeldt and E. Adolfsson: Materials, 10 (2017) 138.   DOI