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Laser powder bed fusion of soda lime silica glass: optimisation of processing parameters and evaluation of part properties

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journal contribution
posted on 19.02.2021, 10:57 by KC Datsiou, F Spirrett, I Ashcroft, M Magallanes, Steven ChristieSteven Christie, R Goodridge
Glass has a number of attractive properties, such as transparency, chemical resistance, good thermal stability and high electrical resistivity, that make it a favourable material for a range of applications, including medical technology, electronics, chemical and pharmaceutical industries. However, compared to metals and polymers, the additive manufacturing of glass is still at a primitive stage. The inherent material properties of glass, i.e. its amorphous structure, lack of ductility and high processing temperatures, make processing of glass by additive manufacturing challenging. This paper describes the laser powder bed fusion of a soda lime silica glass. Optimisation of the laser powder bed fusion process was undertaken and the physical and mechanical properties of the manufactured parts were characterised revealing an average porosity of 12%, a mean flexural strength of 6.5 MPa and a fully amorphous structure. Feasibility examples were successfully demonstrated, indicating that geometrically complex shapes are possible. Even though the manufactured parts are opaque, they could potentially find use in applications where the need for chemical inertness and geometrical complexity surpass the need for transparency as in the chemical and pharmaceutical industries e.g. in the form of continuous flow reactors or structured catalysts.

Funding

Innovate UK (project number 103447)

Future Additive Manufacturing Platform Grant

Engineering and Physical Sciences Research Council

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History

School

  • Science

Department

  • Chemistry

Published in

Additive Manufacturing

Volume

39

Publisher

Elsevier BV

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/

Acceptance date

29/01/2021

Publication date

2021-02-03

Copyright date

2021

ISSN

2214-8604

Language

en

Depositor

Prof Steven Christie. Deposit date: 18 February 2021

Article number

101880