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Title: Novel hybrid method to additively manufacture denser graphite structures using Binder Jetting
Authors: Popov, V.
Fleisher, A.
Muller-Kamskii, G.
Shishkin, A.
Katz-Demyanetz, A.
Travitzky, N.
Goel, S.
Issue Date: 2021
Publisher: Nature Research
Citation: Novel hybrid method to additively manufacture denser graphite structures using Binder Jetting / V. Popov, A. Fleisher, G. Muller-Kamskii, et al. — DOI 10.1038/s41598-021-81861-w // Scientific Reports. — 2021. — Vol. 11. — Iss. 1. — 2438.
Abstract: 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. © 2021, The Author(s).
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85100045389
PURE ID: 20883179
ISSN: 20452322
DOI: 10.1038/s41598-021-81861-w
metadata.dc.description.sponsorship: This work performed in the frame of ITHACA, the COST INNOVATORS’ GRANT, supported by COST (European Cooperation in Science and Technology). All authors greatly acknowledge the financial support provided by the UKRI via Grants No. EP/L016567/1, EP/S013652/1, EP/S036180/1, EP/T001100/1 and EP/T024607/1, Royal Academy of Engineering via Grants No. IAPP18-19\295, TSP1332 and EXPP2021\1\277, EU Cost Action (CA15102, CA18125, CA18224 and CA16235) and Newton Fellowship award from the Royal Society (NIF\ R1\191571). SG is particularly thankful to European Regional Development Funds (ERDF) sponsored A2i project at LSBU that have catalysed several industrial partnerships.
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