Novel Hybrid Method to Additively Manufacture Denser Graphite Structures Using Binder Jetting
Scientific Reports 2021
Popov Vladimir, Aleksander Fleisher, Garry Muller-Kamskii, Andrejs Šiškins, Alexander Katz-Demyanetz, Natan Travitzky, Saurav Goel

This study introduces two hybrid processes integrating an additive manufacturing technique with post-processing treatments namely (i) Binder Jetting Printing (BJP) + Cold Isostatic Pressing (CIP) + cycle and (ii) BJP + cycle where cycle refers to a sequence of Impregnation—Drying—Pyrolysis. These two new processes yielded additively manufactured parts with higher density and reduced defects/porosities. As a testbed, we used these new processes to fabricate graphite structures. The samples produced by both methods were compared with each other and benchmarked to the samples produced by (a) BJP alone and (b) Traditional uniaxial pressing like compaction moulding. Various characterisation methods were used to investigate the microstructure and mechanical properties which showed that the porosity of hybrid manufactured samples reduces from 55% to a record 7%. This technological pathway is expected to create a new avalanche of industrial applications that are hitherto unexplored in the arena of hybrid additive manufacturing with BJP method


Keywords
additive manufacture; graphite; Binder Jetting
DOI
10.1038/s41598-021-81861-w
Hyperlink
https://www.nature.com/articles/s41598-021-81861-w

Vladimir, P., Fleisher, A., Muller-Kamskii, G., Šiškins, A., Katz-Demyanetz, A., Travitzky, N., Goel, S. Novel Hybrid Method to Additively Manufacture Denser Graphite Structures Using Binder Jetting. Scientific Reports, 2021, Vol. 11, No. 1, Article number 2438. ISSN 2045-2322. Available from: doi:10.1038/s41598-021-81861-w

Publication language
English (en)
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