Hinton, J orcid.org/0000-0003-1047-7315, Dejan, B, Mirgkizoudi, M et al. (3 more authors) (2019) Hybrid additive manufacturing of precision engineered ceramic components. Rapid Prototyping Journal, 25 (6). pp. 1061-1068. ISSN 1355-2546
Abstract
Purpose
The purpose of this paper is to develop a hybrid additive/subtractive manufacturing platform for the production of high density ceramic components.
Design/methodology/approach
Fabrication of near-net shape components is achieved using 96 per cent Al3O2 ceramic paste extrusion and a planarizing machining operations. Sacrificial polymer support can be used to aid the creation of overhanging or internal features. Post-processing using a variety of machining operations improves tolerances and fidelity between the component and CAD model while reducing defects.
Findings
This resultant three-dimensional monolithic ceramic components demonstrated post sintering tolerances of ±100 µm, surface roughness’s of ∼1 µm Ra, densities in excess of 99.7 per cent and three-point bending strength of 221 MPa.
Originality/value
This method represents a novel approach for the digital fabrication of ceramic components, which provides improved manufacturing tolerances, part quality and capability over existing additive manufacturing approaches.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Copyright © 2019, Emerald Publishing Limited. This is an author produced version of a paper published in Rapid Prototyping Journal. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Ceramics; Additive manufacturing; Machining; Hybrid; Multi-process |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Future Manufacturing Processes (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 20 May 2019 10:40 |
Last Modified: | 30 Aug 2019 14:33 |
Status: | Published |
Publisher: | Emerald |
Identification Number: | 10.1108/RPJ-01-2019-0025 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:146151 |