scholarly journals Phase stability and microstructure evolution of yttria-stabilized zirconia during firing in a reducing atmosphere

2011 ◽  
Vol 37 (4) ◽  
pp. 1401-1407 ◽  
Author(s):  
Chang-Ju Ho ◽  
Wei-Hsing Tuan
Keyword(s):  
Microstructure Evolution ◽  
Phase Stability ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Reducing Atmosphere

Effect of Cation Dopant on Phase Stability of Zirconia Bioceramics in Hot Water

2006 ◽  
Vol 49 ◽  
pp. 97-102 ◽  
Author(s):  
Yorinobu Takigawa ◽  
Yukihisa Naka ◽  
Kenji Higashi
Keyword(s):  
Phase Transformation ◽  
Phase Stability ◽  
Ionic Radius ◽  
Hot Water ◽  
Yttria Stabilized Zirconia ◽  
Transformation Behavior ◽  
Stabilized Zirconia

The effect of cation ion dopant on phase transformation of zirconia bioceramics is evaluated by ageing in hot water. The phase transformation progresses with time in all specimens. However, the transformation behavior is much different depending on the dopant. The transformation is promoted when the 1 mol% of pentavalent element is added to 3mol% yttria stabilized zirconia (3Y-TZP). In contrast, the transformation is suppressed when the bivalent element is added. In case that the tetravalent element is added, the transformation is promoted if the ionic radius of the element is larger than that of zirconium, and the transformation is suppressed if the element with smaller ionic radius than zirconium ion is added. This result indicates that the ionic radius and the valency of ions are important factors to control the phase stability in zirconia.

Investigation on the phase stability of yttria-stabilized zirconia electrolytes for high-temperature electrochemical application

2019 ◽  
Vol 45 (7) ◽  
pp. 9462-9467 ◽  
Author(s):  
Kuk-Jin Hwang ◽  
Miyoung Shin ◽  
Myung-Hyun Lee ◽  
Heesoo Lee ◽  
Mi Young Oh ◽  
...  
Keyword(s):  
High Temperature ◽  
Phase Stability ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Electrochemical Application

Microstructure evolution in yttria stabilized zirconia during laser hybrid induction modification

2019 ◽  
Vol 810 ◽  
pp. 151898 ◽  
Author(s):  
Zhengjie Fan ◽  
Rujia Wang ◽  
Xuesong Mei ◽  
Xiaofeng Zhang ◽  
Xiaomao Sun ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Laser Hybrid

Microwave Processing of Redox Ceramic-Metal Composites

1996 ◽  
Vol 430 ◽  
Author(s):  
R. R. Di Fiore ◽  
D. E. Clark
Keyword(s):  
Compressive Strength ◽  
Activated Carbon ◽  
Copper Oxide ◽  
Yttria Stabilized Zirconia ◽  
Carbon Powder ◽  
Stabilized Zirconia ◽  
Metal Composites ◽  
Reducing Atmosphere ◽  
Fine Powders ◽  
Microwave Hybrid Heating

AbstractCeramic-metal composites have been produced through the reduction of copper oxide (CuO) and the oxidation of aluminum in a reducing atmosphere. Fine powders of CuO and Al (<38μm) were mixed with yttria stabilized zirconia, ball milled and uniaxially pressed into disc samples. Microwave hybrid heating was used to process samples using β-SiC and activated carbon powder as susceptors. Pyrolysis of the carbon provided the reducing atmosphere. The resulting Ctt/Al2O3/Y-ZrO2 composite was analyzed for density, compressive strength and resistivity.

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