Influence of C doping on the fracture mode and abrasive wear of Al2O3

Yahya, N.A. and Todd, R.I. (2012) Influence of C doping on the fracture mode and abrasive wear of Al2O3. Journal of the European Ceramic Society, 32 (16). pp. 4003-4007. ISSN 0955-2219

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Abstract

Previous studies have shown that the addition of SiC nanoparticles to Al2O3 changes the fracture mode from intergranular to transgranular and in doing so improves the wear resistance. The reason for this is not clear but a change to the grain boundary chemistry caused by impurities such as C added with the SiC may be involved. The aim of the current study was to investigate the influence of small amounts of C doping on the fracture mode and wear properties of Al2O3. The microstructure and properties of Al2O3 doped with 0 and 0.012 wt C were studied. Al2O3 showed mainly intergranular fracture. The addition of 0.012 wt C to Al2O3 changed the fracture mode to mainly transgranular. The wear resistance improved and the percentage of surface grains pulled out was lower compared to pure Al2O3. (C) 2012 Elsevier Ltd. All rights reserved.

Item Type: Article
Additional Information: ISI Document Delivery No.: 027ZM Times Cited: 0 Cited Reference Count: 25 Cited References: Ahmad I, 2009, J EUR CERAM SOC, V30, P865 Ahmad I, 2010, COMPOS SCI TECHNOL, V70, P1199, DOI 10.1016/j.compscitech.2010.03.007 Castellan E, 2010, J AM CERAM SOC, V93, P954, DOI 10.1111/j.1551-2916.2009.03515.x Chen HJ, 2000, SCRIPTA MATER, V42, P555, DOI 10.1016/S1359-6462(99)00403-0 Davidge RW, 1996, J EUR CERAM SOC, V16, P799, DOI 10.1016/0955-2219(95)00198-0 Dillon SJ, 2008, J EUR CERAM SOC, V28, P1485, DOI 10.1016/j.jeurceramsoc.2007.12.018 Gao L, 2000, J EUR CERAM SOC, V20, P2149, DOI 10.1016/S0955-2219(00)00086-8 Jiao S, 1998, PHILOS MAG A, V78, P507 Jiao S, 1997, J MICROSC-OXFORD, V185, P259, DOI 10.1046/j.1365-2818.1997.d01-610.x Kara H, 2000, J AM CERAM SOC, V83, P1219 Limpichaipanit A, 2009, J EUR CERAM SOC, V29, P2841, DOI 10.1016/j.jeurceramsoc.2009.03.023 Marquis EA, 2010, MATER TODAY, V13, P42 Niihara K, 1991, ADV STRUC INORG COMP, V63 Niihara K., 1991, J CERAM SOC JPN, V99, P974 Ortiz-Merino JL, 2005, ACTA MATER, V53, P3345, DOI 10.1016/j.actamat.2005.03.031 Rodriguez J, 1999, J AM CERAM SOC, V82, P2252 Rutherford KL, 1997, J TEST EVAL, V25, P250 Sedlacek J, 2004, EURO CERAM, VVIII, P264 SEDLACEK J, 2004, EURO CERAM, V264, P841 Sedlacek J, 2008, J EUR CERAM SOC, V28, P2983, DOI 10.1016/j.jeurceramsoc.2008.04.018 Todd RI, 2006, ADV SCI TECHNOL, V45, P555 Walker CN, 1994, BR CERAM P, V53, P249 Winn AJ, 1999, BRIT CERAM T, V98, P219, DOI 10.1179/096797899680471 WURST JC, 1972, J AM CERAM SOC, V55, P109, DOI 10.1111/j.1151-2916.1972.tb11224.x ZHAO JH, 1993, J AM CERAM SOC, V76, P503, DOI 10.1111/j.1151-2916.1993.tb03814.x Yahya, Noor A. Todd, Richard I. Elsevier sci ltd Oxford
Uncontrolled Keywords: Al2O3 Al2O3/C Fracture mode Abrasive wear Wear resistance Pullout alumina/silicon carbide nanocomposites alumina microstructure behavior silicon ceramics carbon
Subjects: R Medicine > RK Dentistry
Divisions: Faculty of Dentistry > Dept of Conservative Dentistry
Depositing User: Mr Ahmad Azwan Azman
Date Deposited: 19 Apr 2013 01:12
Last Modified: 19 Apr 2013 01:12
URI: http://eprints.um.edu.my/id/eprint/5838

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