Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite

Ceramic composite made up of zirconia-toughened alumina (ZTA) with TiO2 as additive was constructed via a solid-state sintering route. The Vickers hardness of the obtained ZTA–TiO2 was evaluated at various levels of the TiO2 addition. Every sample was dry mixed, uniaxially pressed and sintered a...

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Main Authors:	Manshor, Hanisah, Md Aris, Suriyana, Ahmad Azhar, Ahmad Zahirani, Abdullah, Ezzat Chan, Ahmad, Zainal Arifin
Format:	Article
Language:	English
Published:	Pergamon 2014
Subjects:	QC Physics
Online Access:	http://irep.iium.edu.my/39894/ http://irep.iium.edu.my/39894/ http://irep.iium.edu.my/39894/ http://irep.iium.edu.my/39894/1/1-s2.0-S0272884214018409-main_4.pdf

id	iium-39894
recordtype	eprints
spelling	iium-398942014-12-16T03:05:33Z http://irep.iium.edu.my/39894/ Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite Manshor, Hanisah Md Aris, Suriyana Ahmad Azhar, Ahmad Zahirani Abdullah, Ezzat Chan Ahmad, Zainal Arifin QC Physics Ceramic composite made up of zirconia-toughened alumina (ZTA) with TiO2 as additive was constructed via a solid-state sintering route. The Vickers hardness of the obtained ZTA–TiO2 was evaluated at various levels of the TiO2 addition. Every sample was dry mixed, uniaxially pressed and sintered at 1600 1C for 1 h in a pressureless condition. The presence of TiO2 was observed to have greatly influenced the microstructure of the Al2O3. Grain growth of the Al2O3 particles was hindered with the addition of 3 wt% TiO2, but increased in size at an excess of 3 wt% TiO2. According to the results, tialite (Al2TiO5) begun appearing at a composition of ZTA–5 wt% TiO2 and this increased with the TiO2 content. The fracture toughness and hardness were enhanced from 5.93 MPa √m (0 wt% TiO2) to 6.56 MPa √m (3.0 wt% TiO2) and from 1516.13 HV (0 wt% TiO2) to 1615.8 HV (3.0 wt% TiO2), respectively. The improved bulk density from 3.9 g/cm3 (0 wt% TiO2) to 4.10 g/cm3 (3.0 wt% TiO2) resulted from the fine microstructure, thereby enhancing the mechanical properties. Pergamon 2014 Article PeerReviewed application/pdf en http://irep.iium.edu.my/39894/1/1-s2.0-S0272884214018409-main_4.pdf Manshor, Hanisah and Md Aris, Suriyana and Ahmad Azhar, Ahmad Zahirani and Abdullah, Ezzat Chan and Ahmad, Zainal Arifin (2014) Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite. Ceramics International. ISSN 0272-8842 (In Press) http://www.sciencedirect.com/science/article/pii/S0272884214018409 doi:10.1016/j.ceramint.2014.11.080
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	QC Physics
spellingShingle	QC Physics Manshor, Hanisah Md Aris, Suriyana Ahmad Azhar, Ahmad Zahirani Abdullah, Ezzat Chan Ahmad, Zainal Arifin Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite
description	Ceramic composite made up of zirconia-toughened alumina (ZTA) with TiO2 as additive was constructed via a solid-state sintering route. The Vickers hardness of the obtained ZTA–TiO2 was evaluated at various levels of the TiO2 addition. Every sample was dry mixed, uniaxially pressed and sintered at 1600 1C for 1 h in a pressureless condition. The presence of TiO2 was observed to have greatly influenced the microstructure of the Al2O3. Grain growth of the Al2O3 particles was hindered with the addition of 3 wt% TiO2, but increased in size at an excess of 3 wt% TiO2. According to the results, tialite (Al2TiO5) begun appearing at a composition of ZTA–5 wt% TiO2 and this increased with the TiO2 content. The fracture toughness and hardness were enhanced from 5.93 MPa √m (0 wt% TiO2) to 6.56 MPa √m (3.0 wt% TiO2) and from 1516.13 HV (0 wt% TiO2) to 1615.8 HV (3.0 wt% TiO2), respectively. The improved bulk density from 3.9 g/cm3 (0 wt% TiO2) to 4.10 g/cm3 (3.0 wt% TiO2) resulted from the fine microstructure, thereby enhancing the mechanical properties.
format	Article
author	Manshor, Hanisah Md Aris, Suriyana Ahmad Azhar, Ahmad Zahirani Abdullah, Ezzat Chan Ahmad, Zainal Arifin
author_facet	Manshor, Hanisah Md Aris, Suriyana Ahmad Azhar, Ahmad Zahirani Abdullah, Ezzat Chan Ahmad, Zainal Arifin
author_sort	Manshor, Hanisah
title	Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite
title_short	Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite
title_full	Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite
title_fullStr	Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite
title_full_unstemmed	Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite
title_sort	effects of tio2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite
publisher	Pergamon
publishDate	2014
url	http://irep.iium.edu.my/39894/ http://irep.iium.edu.my/39894/ http://irep.iium.edu.my/39894/ http://irep.iium.edu.my/39894/1/1-s2.0-S0272884214018409-main_4.pdf
first_indexed	2023-09-18T20:57:16Z
last_indexed	2023-09-18T20:57:16Z
_version_	1777410387992379392

Effects of TiO2 addition on the phase, mechanical properties, and microstructure of zirconia-toughened alumina ceramic composite

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