TY - JOUR
T1 - The structure-property-processing relationship for sintered yttria-stabilized zirconia (YSZ)/alumina bioceramics
AU - Wang, Sea Fue
AU - Yang, Thomas Chung Kuang
AU - Hsu, Ya Ting
AU - Lee, Sheng Yang
AU - Yang, Jen Chang
N1 - Funding Information:
This study was supported by the grants of (NTUT-TMU-98-01) from National Taipei University of Technology and Taipei Medical University and (99-EC-17-A-19-S1-160) from Ministry of Economic A®airs (MOEA).
PY - 2013/8
Y1 - 2013/8
N2 - The objective of this research is to study the effects of alumina addition on the microstructure-mechanical property relationship and sintering behavior of yttria (3 mol%)-stabilized zirconia (YSZ) ceramics. Well-dispersed YSZ/Al 2O3 ceramics containing 10-40 wt.% Al2O 3 were prepared by solid state reaction method. The relative density, average grain size, lattice parameters, microhardness, and fracture toughness of YSZ/Al2O3 ceramics system sintered in the temperature range of 1250∼1500°C as a function of Al2O3 content were investigated. Experimental results showed that the ceramics with high Al2O3 content and low sintering temperature tended to reveal low bulk densities. But the Al2O3 content dependence on relative density for YSZ/Al2O3 ceramics becomed deminishing when increasing the sintering temperature. Dense ceramics with composition of (80/20) (YSZ/Al2O3) and sintered at temperature of 1400°C and 1450°C revealed the optimal Vickers hardness and fracture toughness properties. These ceramics with high Al2O 3 content tended to reveal small grain sizes. The high sintering temperature governs the slow grain growth and high hardness in materials indicating the good correlation between microstructure of fabricated dense and mechanical properties.
AB - The objective of this research is to study the effects of alumina addition on the microstructure-mechanical property relationship and sintering behavior of yttria (3 mol%)-stabilized zirconia (YSZ) ceramics. Well-dispersed YSZ/Al 2O3 ceramics containing 10-40 wt.% Al2O 3 were prepared by solid state reaction method. The relative density, average grain size, lattice parameters, microhardness, and fracture toughness of YSZ/Al2O3 ceramics system sintered in the temperature range of 1250∼1500°C as a function of Al2O3 content were investigated. Experimental results showed that the ceramics with high Al2O3 content and low sintering temperature tended to reveal low bulk densities. But the Al2O3 content dependence on relative density for YSZ/Al2O3 ceramics becomed deminishing when increasing the sintering temperature. Dense ceramics with composition of (80/20) (YSZ/Al2O3) and sintered at temperature of 1400°C and 1450°C revealed the optimal Vickers hardness and fracture toughness properties. These ceramics with high Al2O 3 content tended to reveal small grain sizes. The high sintering temperature governs the slow grain growth and high hardness in materials indicating the good correlation between microstructure of fabricated dense and mechanical properties.
KW - Alumina
KW - Microhardness
KW - Toughness
KW - Yttrium-stabilized zirconium polycrystal
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U2 - 10.4015/S1016237213500051
DO - 10.4015/S1016237213500051
M3 - Article
AN - SCOPUS:84883109142
SN - 1016-2372
VL - 25
JO - Biomedical Engineering - Applications, Basis and Communications
JF - Biomedical Engineering - Applications, Basis and Communications
IS - 4
M1 - 1350005
ER -