Effects of Calcium Hexaluminate Addition on the Mechanical Properties of Zirconia-Toughened-Alumina

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The effects of calcium hexaluminate addition on the microstructure and mechanical properties of zirconia-toughened-alumina ceramic were investigated. Zirconia-toughened-alumina (ZTA) composite ceramics which have different additions of calcium hexaluminate were successfully fabricated by pressureless sintering at 1600°C for 3h. The result shows that the bending strength and abrasive wearing improved with the increasing of CaAl12O19 addition while the fracture toughness declined.

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286-290

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March 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] A.Z. Ahmad Azhar, L.C. Choong, H. Mohamed. et al. Effects of Cr2O3 addition on the mechanical properties, microstructure and wear performance of zirconia-toughened-alumina (ZTA) cutting inserts, Journal of Alloys and Compounds, (2012) 513: 91–96.

DOI: 10.1016/j.jallcom.2011.09.092

Google Scholar

[2] J. Wang, R. Stevens. Review zirconia-toughened alumina(ZTA)ceramics, J. Mater. Sci. (1989) 24: 3421-3440.

DOI: 10.1007/bf02385721

Google Scholar

[3] Li Youqi, Li Yawei, JinShengli, et al , Synthesis and its microstructure of calcium hexaluminate material by reaction sintering, Naihuo Cailiao. (2004)38(5): 318 (in Chinese).

Google Scholar

[4] V.V. SrdicL, L. Radonjic, Transformation Toughening in Sol–Gel-Derived Alumina–Zirconia Composites, J. Am. Ceram. Soc, (1997)80(8): 2056–60.

Google Scholar

[5] J. Wang, R. Pinggen, M. Lv. et. al. Mechnical and wear properties of ZTA ceramic. J. Ceram. (2008) NO2. Jun. Vol. 29; (in Chinese).

Google Scholar

[6] Y.Y. shizawa, M. Toriyama. Ceramic Soc Japan, (1998)106(12): 1172.

Google Scholar

[7] T. Masaki. Mechanical Properties of Toughened ZrO2-Y2O3 Ceramics. J. Am. Cerom. Soc., (1986)69 (8): 63840.

Google Scholar

[8] C. Dominguez, J. Chevalier, R. Torrecillas, et. al. Thermomechanical Properties And Fracture Mechanisms of Calcium Hesaluminate. J. Europ. Ceram. Soc. (2001)21: 908-917.

Google Scholar