scholarly journals Processing and Characterization of Yttria-Stabilized Zirconia Foams for High-Temperature Applications

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Ana María Herrera ◽  
Amir Antônio Martins de Oliveira ◽  
Antonio Pedro Novaes de Oliveira ◽  
Dachamir Hotza
Keyword(s):  
High Temperature ◽  
Thermal Behavior ◽  
Polyurethane Foams ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Ceramic Foams ◽  
Pore Sizes ◽  
Replication Method ◽  
Microstructural Defects

In this work ceramic foams of 3 and 8 mol% yttria-stabilized zirconia (3YSZ and 8YSZ) were manufactured by the replication method using polystyrene-polyurethane foams with pore sizes in the 7–10 ppi range. A second coating was carried out on presintered foams in order to thicken struts and hinder microstructural defects. The produced ceramic foams were structurally and thermomechanically characterized. Samples recoated with 3YSZ presented the highest relative densities (0.2±0.1) which contributed to a better mechanical and thermal behavior.

Ti – ZrO2 Interactions during Manufacturing of High Porous Ti/Ti-Based MMC of Regulated Structure

2008 ◽  
Vol 604-605 ◽  
pp. 411-417
Author(s):  
Yuliya Orlova ◽  
K. Maekawa ◽  
Henry J. Rack
Keyword(s):  
High Temperature ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Xrd Analysis ◽  
Yttria Stabilized Zirconia ◽  
Matrix Composites ◽  
Stabilized Zirconia ◽  
Pore Sizes ◽  
Porous Ti ◽  
Sintering Conditions

The present paper reports a microstructure inspection of powder fabrication of regulated structure Ti/Ti-based metal matrix composites (MMC) utilizing sacrificial NaCl particles. Blending, compaction and sintering of Ti and YSZ reinforced Ti compacts containing NaCl resulted in regulated foam structures with porosities between 45 and 70 pct. SEM observations indicated that three pore sizes and morphologies were formed while XRD analysis suggested that the yttria stabilized zirconia (YSZ) reinforcements are unstable at the high temperature sintering conditions considered in this study.

Design, preparation, and characterization of Yttria-Stabilized Zirconia (YSZ) coatings obtained by electrophoretic deposition (EPD)

2021 ◽  
Author(s):  
Juan Luis Pantoja-Pertegal ◽  
Antonio Díaz-Parralejo ◽  
Antonio Macías-García ◽  
J.Sánchez González ◽  
Eduardo M. Cuerda-Correa
Keyword(s):  
Electrophoretic Deposition ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

Optical characterization of Pr3+-doped yttria-stabilized zirconia single crystals

1997 ◽  
Vol 56 (10) ◽  
pp. 5856-5865 ◽  
Author(s):  
B. Savoini ◽  
J. E. Muñoz Santiuste ◽  
R. González
Keyword(s):  
Single Crystals ◽  
Optical Characterization ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

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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