Pressureless sintering behavior and mechanical properties of ZrB2–SiC composites: effect of SiC content and particle size
In the present paper, ZrB2–SiC composites were prepared by pressureless sintering at temperatures of 2000–2200 °C for 1 h under argon atmosphere. In order to prepare composite samples, ZrB2 powder was milled for 2 h, then the reinforcing particles including of micron and nano-sized SiC powder were a...
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| Format: | Article |
| Language: | English |
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Elsevier
2015-10-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785415000290 |
| _version_ | 1818517036854149120 |
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| author | Mehri Mashhadi Hamid Khaksari Saeed Safi |
| author_facet | Mehri Mashhadi Hamid Khaksari Saeed Safi |
| author_sort | Mehri Mashhadi |
| collection | DOAJ |
| description | In the present paper, ZrB2–SiC composites were prepared by pressureless sintering at temperatures of 2000–2200 °C for 1 h under argon atmosphere. In order to prepare composite samples, ZrB2 powder was milled for 2 h, then the reinforcing particles including of micron and nano-sized SiC powder were added. The mixtures were formed and, after the pyrolysis, they were sintered. Densification, microstructural and mechanical properties of ZrB2–SiC composites were investigated. The shrinkage of samples was measured both before and after the sintering, and the microstructure of samples was examined using scanning electron microscopy (SEM), equipped with EDS spectroscopy. Both mass fraction and size of SiC powder have a great effect on relative density, porosity, shrinkage, hardness and microstructure of these composites. The highest relative density and hardness were 98.12% and 15.02 GPa, respectively, in ZrB2–10 wt% SiCnano composite sintered at 2200 °C. |
| first_indexed | 2024-12-11T00:50:45Z |
| format | Article |
| id | doaj.art-e94ccf10aabe42bc99643144b0068754 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-11T00:50:45Z |
| publishDate | 2015-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-e94ccf10aabe42bc99643144b00687542022-12-22T01:26:38ZengElsevierJournal of Materials Research and Technology2238-78542015-10-014441642210.1016/j.jmrt.2015.02.004Pressureless sintering behavior and mechanical properties of ZrB2–SiC composites: effect of SiC content and particle sizeMehri Mashhadi0Hamid Khaksari1Saeed Safi2Department of Materials Eng., Malek-e-Ashtar University of Technology, Tehran, IranDepartment of Materials Eng., Malek-e-Ashtar University of Technology, Tehran, IranDepartment of Ceramic, Materials and Energy Research Center, Karaj, IranIn the present paper, ZrB2–SiC composites were prepared by pressureless sintering at temperatures of 2000–2200 °C for 1 h under argon atmosphere. In order to prepare composite samples, ZrB2 powder was milled for 2 h, then the reinforcing particles including of micron and nano-sized SiC powder were added. The mixtures were formed and, after the pyrolysis, they were sintered. Densification, microstructural and mechanical properties of ZrB2–SiC composites were investigated. The shrinkage of samples was measured both before and after the sintering, and the microstructure of samples was examined using scanning electron microscopy (SEM), equipped with EDS spectroscopy. Both mass fraction and size of SiC powder have a great effect on relative density, porosity, shrinkage, hardness and microstructure of these composites. The highest relative density and hardness were 98.12% and 15.02 GPa, respectively, in ZrB2–10 wt% SiCnano composite sintered at 2200 °C.http://www.sciencedirect.com/science/article/pii/S2238785415000290ZrB2–SiC compositesPressureless sinteringMicrostructureMechanical properties |
| spellingShingle | Mehri Mashhadi Hamid Khaksari Saeed Safi Pressureless sintering behavior and mechanical properties of ZrB2–SiC composites: effect of SiC content and particle size Journal of Materials Research and Technology ZrB2–SiC composites Pressureless sintering Microstructure Mechanical properties |
| title | Pressureless sintering behavior and mechanical properties of ZrB2–SiC composites: effect of SiC content and particle size |
| title_full | Pressureless sintering behavior and mechanical properties of ZrB2–SiC composites: effect of SiC content and particle size |
| title_fullStr | Pressureless sintering behavior and mechanical properties of ZrB2–SiC composites: effect of SiC content and particle size |
| title_full_unstemmed | Pressureless sintering behavior and mechanical properties of ZrB2–SiC composites: effect of SiC content and particle size |
| title_short | Pressureless sintering behavior and mechanical properties of ZrB2–SiC composites: effect of SiC content and particle size |
| title_sort | pressureless sintering behavior and mechanical properties of zrb2 sic composites effect of sic content and particle size |
| topic | ZrB2–SiC composites Pressureless sintering Microstructure Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785415000290 |
| work_keys_str_mv | AT mehrimashhadi pressurelesssinteringbehaviorandmechanicalpropertiesofzrb2siccompositeseffectofsiccontentandparticlesize AT hamidkhaksari pressurelesssinteringbehaviorandmechanicalpropertiesofzrb2siccompositeseffectofsiccontentandparticlesize AT saeedsafi pressurelesssinteringbehaviorandmechanicalpropertiesofzrb2siccompositeseffectofsiccontentandparticlesize |