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Hardness and fracture toughness analysis of ZTA–SWCNT ceramic cutting inserts

Hamidon, Nor Ezzati and Abdul Molok, Salma and Manshor, Hanisah and Ahmad Azhar, Ahmad Zahirani and Rejab, Nik Akmar and Ahmad, Zainal Arifin and Mohd Ali, Afifah (2019) Hardness and fracture toughness analysis of ZTA–SWCNT ceramic cutting inserts. In: International Conference on X-Rays and Related Techniques in Research and Industry 2018 (IXCRI 2018), 18th-19th August 2018, Kota Bharu, Kelantan.

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Abstract

Hardness and fracture toughness of ZTA samples with addition of SWCNT have been investigated. The composition of Al2O3/YSZ was constant at 80:20 ratios with the amount of SWCNT varied from 0.00, 0.05, 0.10, 0.30 and 0.50 wt %. The SWCNT was soaked in 20 ml ethanol and dispersed using ultrasonic agitation for 1 hour prior to addition with Al2O3/YSZ powder using wet mixing. The hardness and fracture toughness were calculated using Vickers indentation techniques. The Vickers hardness results show that presence SWCNT causes agglomeration in the microstructure of ZTA matrix as a result decreased hardness value. Meanwhile the fracture toughness of ZTA with 0.50 wt. % SWCNT increased to 6.593 MPa·√m which is the highest value. In addition, the good dispersion of CNTs in ZTA matrix composites is with addition 0.10 wt. % of SWCNTs.

Item Type: Conference or Workshop Item (Plenary Papers)
Additional Information: 8089/70267
Uncontrolled Keywords: ZTA, CNT, SWNT, ceramic cutting tool
Subjects: T Technology > TN Mining engineering. Metallurgy > TN600 Metallurgy
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: Dr. Afifah Mohd. Ali
Date Deposited: 13 Mar 2019 10:47
Last Modified: 12 Jun 2019 16:19
URI: http://irep.iium.edu.my/id/eprint/70267

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