Fabrication and mechanical properties of Al2O3/SiC/ZrO2 functionally graded material by electrophoretic deposition

Askari, E. and Mehrali, Mehdi and Metselaar, I.H.S.C. and Kadri, Nahrizul Adib and Rahman, Md Moshiur (2012) Fabrication and mechanical properties of Al2O3/SiC/ZrO2 functionally graded material by electrophoretic deposition. Journal of the Mechanical Behavior of Biomedical Materials, 12. pp. 144-150. ISSN 1751-6161

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Official URL: https://doi.org/10.1016/j.jmbbm.2012.02.029

Abstract

This study describes the synthesis of Al2O3/SiC/ZrO2 functionally graded material (FGM) in bio-implants (artificial joints) by electrophoretic deposition (EPD). A suitable suspension that was based on 2-butanone was applied for the EPD of Al2O3/SiC/ZrO2, and a pressureless sintering process was applied as a presintering. Hot isostatic pressing (HIP) was used to densify the deposit, with beneficial mechanical properties after 2 h at 1800 degrees C in Ar atmosphere. The maximum hardness in the outer layer (90 vol. Al2O3 + 10 vol. SiC) and maximum fracture toughness in the core layer (75 vol. Al2O3 + 10 vol. SiC + 15 vol. ZrO2) composite were 20.8 +/- 0.3 GPa and 8 +/- 0.1 MPa m(1/2), respectively. The results, when compared with results from Al2O3/ZrO2 FGM, showed that SiC increased the compressive stresses in the outer layers, while the inner layers were under a residual tensile stress. (C) 2012 Elsevier Ltd. All rights reserved.

Item Type: Article
Additional Information: Askari, E. Mehrali, M. Metselaar, I. H. S. C. Kadri, N. A. Rahman, Md. M.
Uncontrolled Keywords: Functionally graded material (FGM); Electrophoretic deposition (EPD); Silicon carbide; Alumina; Hot isostatic pressing (HIP)
Subjects: R Medicine
T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Mr. Mohammed Salim Abd Rahman
Date Deposited: 07 Mar 2013 02:43
Last Modified: 03 Dec 2019 05:10
URI: http://eprints.um.edu.my/id/eprint/5042

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