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Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic Pressing

Ayub, Hasan, Khan, Lehar Asip, McCarthy, Eanna, Ahad, Inam Ul orcid logoORCID: 0000-0002-3802-6156, Fleischer, Karsten orcid logoORCID: 0000-0002-7638-4480 and Brabazon, Dermot orcid logoORCID: 0000-0003-3214-6381 (2023) Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic Pressing. Journal of Materials Research and Technology, 19 . pp. 208-219. ISSN 2238-7854

Abstract
This paper presents an examination of the production of copper air filters via the Hydraulic Pressing (HP) method. Processing conditions examined included powder particle type (spherical and dendritic), varying compaction pressures (635, 714, and 793 MPa) and different pore forming (polyvinyl alcohol (PVA)) concentrations (1, 2, and 3 wt.%). Following compaction, the samples were thermally sintered in a two stage sintering regime at 200 ◦C and 750 ◦C. The morphology, porosity, and mechanical properties of the sintered samples were characterised. Morphological analysis demonstrated better consolidation and over-lapping of the copper powder particles in samples with a higher weight percentage of the PVA. Highest porosity was achieved in the sample produced using the dendritic copper powder mixed with highest weight percentage of PVA. As the samples were very porous, the hardness of the samples varied greatly. Samples prepared with spherical powders at high pressure demonstrated the highest hardness. The results in this study show that copper filters with 14%e26% porosity can effectively be produced using spherical and dendritic copper powders by controlling the compaction pressure and PVA concentration.
Metadata
Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:Copper filters; Powder compaction; Microstructure; Morphology analysis; Porosity
Subjects:Engineering > Mechanical engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
Research Institutes and Centres > I-Form
Publisher:Elsevier
Official URL:https://doi.org/10.1016/j.jmrt.2022.05.012
Copyright Information:© 2022 The Authors.
Funders:Science Foundation Ireland (SFI) under Grant Numbers 16/RC/3872, 19/US-C2C/3579, and is co-funded under the European Regional Development Fund.
ID Code:29244
Deposited On:24 Nov 2023 14:45 by Thomas Murtagh . Last Modified 24 Nov 2023 14:45
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