Effect of Titania (TiO2) Addition to Zirconia Toughened Alumina (ZTA) Phases, Hardness and Microstructure

Hanisah Manshor; Suriyana Md Aris; Ahmad Zahirani Ahmad Azhar; Ezzat Chan Abdullah; Zainal Arifin Ahmad

doi:10.4028/www.scientific.net/AMR.1087.293

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1087Effect of Titania (TiO2) Addition to Zirconia...

Effect of Titania (TiO₂) Addition to Zirconia Toughened Alumina (ZTA) Phases, Hardness and Microstructure

Abstract:

Ceramic composites consist of zirconia toughened alumina (ZTA) with TiO₂ as additive was fabricated via solid state sintering route. Numerous studies have indicated that TiO₂ can be used as sintering additives for Al₂O₃ and the ability of microstructural control introduce by TIO₂. The Vickers hardness of the obtained ZTA-TiO₂ was evaluated as a function of different TiO2 addition. Each sample was dry mixed, uniaxially pressed and sintered at 1600 °C for 4 hours in pressureless condition. It is noticed that the presence of TiO₂ greatly influence the microstructure of Al₂O₃. Al₂O₃ grains tend to increase in size with more addition of TiO₂. Characteristics of Vickers hardness increases increases from 1516.13 HV (0 wt% TiO₂) to 1615.8 HV (3 wt% TiO₂). Addition of TiO₂ also increases the bulk density of ZTA-TiO₂ from 3.90 g/cm³ (0 wt% TiO₂) to 4.10 g/cm³ (3 wt% TiO₂).

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Periodical:

Advanced Materials Research (Volume 1087)

Pages:

293-298

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1087.293

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Online since:

February 2015

Authors:

Hanisah Manshor, Suriyana Md Aris, Ahmad Zahirani Ahmad Azhar*, Ezzat Chan Abdullah, Zainal Arifin Ahmad

Keywords:

Microstructure, TiO₂, Vickers Hardness, Zirconia-Toughened Alumina (ZTA)

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* - Corresponding Author

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