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Role of MgO nanoparticles on zirconia-toughened alumina-5 wt-% CeO2 ceramics mechanical properties

Rejab, Nik Akmar and Ahmad Azhar, Ahmad Zahirani and Ratnam, Mani Maran (2016) Role of MgO nanoparticles on zirconia-toughened alumina-5 wt-% CeO2 ceramics mechanical properties. Materials Science and Technology, 32 (13). pp. 1316-1322. ISSN 0267-0836

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Abstract

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.

Item Type: Article (Journal)
Additional Information: 6954/54660
Uncontrolled Keywords: Cutting inserts; Fracture toughness; MgO nanoparticles; Nose wear area; ZTA
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA349 Mechanics of engineering. Applied mechanics
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: Dr Ahmad Zahirani Ahmad Azhar
Date Deposited: 12 Apr 2017 16:04
Last Modified: 18 Jul 2017 12:04
URI: http://irep.iium.edu.my/id/eprint/54660

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