Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic Pressing
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 alcoho...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422006810 |
| _version_ | 1811188938609524736 |
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| author | Hasan Ayub Lehar Asip Khan Eanna McCarthy Inam Ul Ahad Karsten Fleischer Dermot Brabazon |
| author_facet | Hasan Ayub Lehar Asip Khan Eanna McCarthy Inam Ul Ahad Karsten Fleischer Dermot Brabazon |
| author_sort | Hasan Ayub |
| collection | DOAJ |
| description | 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 overlapping 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%–26% porosity can effectively be produced using spherical and dendritic copper powders by controlling the compaction pressure and PVA concentration. |
| first_indexed | 2024-04-11T14:26:25Z |
| format | Article |
| id | doaj.art-571ac12cf7ed4c7da1bbc23d7905863d |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-11T14:26:25Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-571ac12cf7ed4c7da1bbc23d7905863d2022-12-22T04:18:50ZengElsevierJournal of Materials Research and Technology2238-78542022-07-0119208219Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic PressingHasan Ayub0Lehar Asip Khan1Eanna McCarthy2Inam Ul Ahad3Karsten Fleischer4Dermot Brabazon5Corresponding author.; I-Form, Advanced Manufacturing Research Centre, & Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin 9, IrelandI-Form, Advanced Manufacturing Research Centre, & Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin 9, IrelandI-Form, Advanced Manufacturing Research Centre, & Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin 9, IrelandI-Form, Advanced Manufacturing Research Centre, & Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin 9, IrelandI-Form, Advanced Manufacturing Research Centre, & Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin 9, IrelandI-Form, Advanced Manufacturing Research Centre, & Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin 9, IrelandThis 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 overlapping 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%–26% porosity can effectively be produced using spherical and dendritic copper powders by controlling the compaction pressure and PVA concentration.http://www.sciencedirect.com/science/article/pii/S2238785422006810Copper filtersPowder compactionMicrostructureMorphology analysisPorosity |
| spellingShingle | Hasan Ayub Lehar Asip Khan Eanna McCarthy Inam Ul Ahad Karsten Fleischer Dermot Brabazon Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic Pressing Journal of Materials Research and Technology Copper filters Powder compaction Microstructure Morphology analysis Porosity |
| title | Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic Pressing |
| title_full | Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic Pressing |
| title_fullStr | Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic Pressing |
| title_full_unstemmed | Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic Pressing |
| title_short | Investigating the morphology, hardness, and porosity of copper filters produced via Hydraulic Pressing |
| title_sort | investigating the morphology hardness and porosity of copper filters produced via hydraulic pressing |
| topic | Copper filters Powder compaction Microstructure Morphology analysis Porosity |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422006810 |
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