Effect of sintering parameters (time and temperature) upon the fabrication process of organic binder-based metallic hollow sphere
| Autor: | Mohammad Hossain Paydar, Seyed Abolghasem Dehghan, Hamid Reza Davari, Hooman Gholamzadeh |
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| Rok vydání: | 2017 |
| Předmět: |
Fabrication
Materials science 020502 materials Metals and Alloys Sintering 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Iron powder Metal 0205 materials engineering Coating Mechanics of Materials visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium engineering SPHERES Adhesive Composite material 0210 nano-technology |
| Zdroj: | Powder Metallurgy. 60:363-370 |
| ISSN: | 1743-2901 0032-5899 |
| DOI: | 10.1080/00325899.2017.1355424 |
| Popis: | Metallic hollow spheres (MHSs) are developed to be used in structural applications in syntactic and metal foams. These foams are lightweight and energy-absorbing structures which also can be used for acoustic insulation. In this study, the fabrication process of MHSs with optimum mechanical properties has been investigated. To achieve this goal, polystyrene spheres were coated with iron powder and an organic binder. During the multi-stage heat treatment, the green spheres were sintered into MHSs. Sintering was done at various temperatures (1125, 1150, 1175 and 1200°C) at different durations (3:30, 4:30 and 5:30 h). The influence of the different sintering durations and temperatures on mechanical features, microstructure and density was studied as well. The obtained results indicate that samples that were sintered at the temperature of 1175°C for 4:30 h resulted in superior mechanical and physical properties. |
| Databáze: | OpenAIRE |
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