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

被引：59

作者：

Askari, E. ^{[2
,3
]}

Mehrali, M. ^{[1
]}

Metselaar, I. H. S. C. ^{[2
,3
]}

Kadri, N. A. ^{[1
]}

Rahman, Md. M. ^{[2
,3
]}

机构：

[1] Univ Malaya, Fac Engn, Dept Biomed Engn, Kuala Lumpur 50603, Malaysia

[2] Univ Malaya, Dept Mech Engn, Kuala Lumpur 50603, Malaysia

[3] Univ Malaya, Adv Mat Res Ctr, Kuala Lumpur 50603, Malaysia

来源：

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS | 2012年 / 12卷

关键词：

Functionally graded material (FGM); Electrophoretic deposition (EPD); Silicon carbide; Alumina; Hot isostatic pressing (HIP); METAL-CERAMIC COMPOSITES; FRACTURE-TOUGHNESS; AL2O3-SIC NANOCOMPOSITES; BIOMEDICAL APPLICATIONS; BEHAVIOR; ALUMINA; TEMPERATURE; ZIRCONIA; STRESS; EPD;

D O I：

10.1016/j.jmbbm.2012.02.029

中图分类号：

R318 [生物医学工程];

学科分类号：

100103 [病原生物学];

摘要：

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.

引用

页码：144 / 150

页数：7

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