Role of MgO nanoparticles on zirconia-toughened alumina-5 wt-% CeO2 ceramics mechanical properties
The poor hardness of zirconia-toughened alumina (ZTA) with 5 wt-% CeO2 (ZTA5CeO2) ceramic has limited its applications as a cutting insert. Therefore, in this work, the possibility of MgO nanoparticles (20 nm) as reinforcement to ZTA5CeO2 ceramics was investigated. Mgo nanoparticles with different w...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Taylor and Francis Ltd.
2016
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/54660/ http://irep.iium.edu.my/54660/ http://irep.iium.edu.my/54660/ http://irep.iium.edu.my/54660/1/54660_Role%20of%20MgO%20nanoparticles.pdf http://irep.iium.edu.my/54660/2/54660_Role%20of%20MgO%20nanoparticles_WOS.pdf http://irep.iium.edu.my/54660/3/54660_Role%20of%20MgO%20nanoparticles_SCOPUS.pdf |
| Summary: | The poor hardness of zirconia-toughened alumina (ZTA) with 5 wt-% CeO2 (ZTA5CeO2) ceramic has limited its applications as a cutting insert. Therefore, in this work, the possibility of MgO nanoparticles (20 nm) as reinforcement to ZTA5CeO2 ceramics was investigated. Mgo nanoparticles with different weight percentages (0-2 wt-%) were added to ZTA5CeO2 ceramics. ZTA5CeO2 with 0.5 wt-%MgO showed the highest fracture toughness of 9.14 MPa.√m. The addition of 0.5 wt-%MgO nanoparticles showed the excellent role of MgAl11CeO19 grains as a crack deflector, which consequently produced a reasonable hardness value of 1591 HV and lowered the wear areas to 0.0528 mm2. © 2016 Institute of Materials, Minerals and Mining. |
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