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Direct Inkjet Deposition of Ceramic Green Bodies: II – Jet Behaviour and Deposit Formation

Published online by Cambridge University Press:  10 February 2011

N. Reis ,
K. A. M. Seerden ,
B. Derby ,
J. W. Halloran  and
J. R. G. Evans
N. Reis
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, UK; Now at Manchester Materials Science Centre, Grosvenor St., Manchester, Ml 7HS, UK.
K. A. M. Seerden
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, UK;
B. Derby
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, UK; Now at Manchester Materials Science Centre, Grosvenor St., Manchester, Ml 7HS, UK.
J. W. Halloran
Affiliation:
Materials Science and Engineering Department, University of Michigan, Ann Arbor, MI 48109-2136, USA;
J. R. G. Evans
Affiliation:
Department of Materials, Queen Mary and Westfield College, London, El 4NS, UK;
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Abstract

In order to successfully build three-dimensional shapes by hot-melt inkjet deposition it is essential to control the building block characteristics, i.e., the deposit geometry, dimensions and fine feature resolution. The deposit formation is mainly dependent on the material systems and their jetting behaviour. It is therefore crucial to understand how the jet formation is affected by the inks 'rheological properties and how to manipulate the jet-head driving parameters to achieve optimum deposition conditions. This paper reports our investigations with a model jet firing station, about the influence of driving parameters of hot-melt drop-on-demand print-heads (e.g., pulse shape and frequency) on the jet and deposit formation characteristics, for both unfilled and powder loaded vehicles.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 542: Symposium V – Solid Freeform and Additive Fabrication , 1998 , 147
Copyright
Copyright © Materials Research Society 1999

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