Mechanical properties of spark plasma sintered ceria reinforced 8 mol% yttria-stabilized zirconia electrolyte

2012 ◽  
Vol 1 (5) ◽  
pp. 306-315 ◽  
Author(s):  
Alka Gupta ◽  
Samir Sharma ◽  
Neelima Mahato ◽  
Amanda Simpson ◽  
Shobit Omar ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Spark Plasma ◽  
Zirconia Electrolyte

Mechanical Properties and Toughening Mechanisms of Multi-Walled Carbon Nanotube Reinforced Yttria-Stabilized Zirconia Composite

2014 ◽  
Vol 1052 ◽  
pp. 24-27
Author(s):  
Lv Zhang ◽  
Wei Wei Liu ◽  
Yao Chen
Keyword(s):  
Mechanical Properties ◽  
Yttria Stabilized Zirconia ◽  
Sintering Process ◽  
Stabilized Zirconia ◽  
Toughening Mechanisms ◽  
Plasma Sintering ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Spark Plasma ◽  
Walled Carbon Nanotubes

Yttria-stabilized zirconia (YSZ) reinforced with multi-walled carbon nanotubes (MWCNTs) is fabricated through spark plasma sintering (SPS). Raman spectroscopy corroborated that MWCNTs survived the harsh sintering process. The MWCNT/YSZ composite exhibits ~ 34% improvement in fracture toughness as compared to YSZ. Grain refinement, MWCNT pullout and crack bridging are the major toughening mechanisms.

Microstructural examination of modified yttria stabilized zirconia by EM analytical techniques

1986 ◽  
Vol 44 ◽  
pp. 842-843
Author(s):  
W. W. Davison ◽  
R. C. Buchanan
Keyword(s):  
Mechanical Properties ◽  
Analytical Techniques ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Transmission Microscopy ◽  
Sintering Aid ◽  
Densification Temperature ◽  
Chemical Inertness ◽  
Scanning Transmission ◽  
Microstructural Examination

Yttria stabilized zirconia (YSZ) has become a significant technological material due to its high ionic conductivity, chemical inertness, and good mechanical properties. Temperatures on the order of 1700°C are required, however, to densify YSZ to the degree necessary for good electrical and mechanical properties. A technique for lowering the densification temperature is the addition of small amounts of material which facilitate the formation of a liquid phase at comparatively low temperatures. In this study, sintered microstructures obtained from the use of Al2O3 as a sintering aid were examined with scanning, transmission, and scanning transmission microscopy (SEM, TEM, and STEM).

Effect of Coupled Conditions of Thermal Cycle and Dump Environment on Conductivity of 5mol% Yttria Stabilized Zirconia

2013 ◽  
Vol 591 ◽  
pp. 245-248 ◽  
Author(s):  
Jin Feng Xia ◽  
Hong Qiang Nian ◽  
Tao Feng ◽  
Hai Fang Xu ◽  
Dan Yu Jiang
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Transmission Electron Microscopy ◽  
High Temperature ◽  
Thermal Cycle ◽  
Oxygen Sensor ◽  
Yttria Stabilized Zirconia ◽  
Cyclic Change ◽  
Stabilized Zirconia ◽  
Transmission Electron

In some applications such as automotive oxygen sensor, 5mol% Y2O3stabilized zirconia (5YSZ) is generally used because it has both excellent ionic conductivity and mechanical properties. The automotive oxygen sensor would experience a cyclic change from high temperature (engine running) environment to the low temperature damp environment (in the tail pipe when vehicle stops). The conductivity change with coupled conditions of thermal cycle and dump environment in the 5mol%Y2O3ZrO2(5YSZ) system was examined by XRD,Impedance spectroscopy and transmission electron microscopy (SEM) in this paper.

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