scholarly journals Electrodeposition of a YSZ–Yttria Stabilized Zirconia Composite Coating on a Titanium Bone Implant

2018 ◽  
pp. 822-831 ◽  
Author(s):  
Xin Yin ◽  
Keyword(s):  
Composite Coating ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Bone Implant

Sulfate‐vanadate hot corrosion of neodymium cerate/yttria stabilized zirconia composite coating

2018 ◽  
Vol 16 (3) ◽  
pp. 931-942
Author(s):  
Noveed Ejaz ◽  
Liaqat Ali ◽  
Akhlaque Ahmed ◽  
Asif Rafiq ◽  
Gul Hameed Awan ◽  
...  
Keyword(s):  
Composite Coating ◽  
Hot Corrosion ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

3-Dimensional Porosity in Electroless Ni-YSZ Composite Coating

2014 ◽  
Vol 1025-1026 ◽  
pp. 672-676
Author(s):  
Nor Bahiyah Baba ◽  
Mohamad Amir Harunsyam Lamshah ◽  
Mohamad Asyraf Mohd Amin
Keyword(s):  
Composite Coating ◽  
Electroless Nickel ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Pore Former ◽  
Atomic Sphere ◽  
3 Dimensional ◽  
Rhombic Dodecahedra ◽  
Electroless Ni ◽  
Area And Volume

The paper discussed on a 3-dimensional porosity network in electroless nickel (Ni) - yttria stabilized zirconia (YSZ) composite coating. The important characteristics of Ni-YSZ composite such as high ceramic YSZ incorporation and adequate porosity up to 40 vol.% are used as the main parameters. The arrangement of the porosity that give a 3-dimensional porosity network within the composite was design in Pro-Engineer Wildfire 3.0 software. Three structures of 3-dimensional porosity network were used namely honeycomb, atomic sphere and rhombic dodecahedra. The calculated area and volume of one unit porosity, consequently the number of porosity were compared between the three structures. These were supported by the porosity in the electroless Ni-YSZ composite coating obtained experimentally. Two batches were produced, EN-YSZ and EN-YSZ-G representing samples without and with pore former respectively. The two batch samples were investigated and compared. The addition of graphite pore former was burnt out completely and left porosity in the coating.

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).

Characterizations of Synthetic 8mol% YSZ with Comparison to 3mol %YSZ for HT-SOFC

2020 ◽  
Vol 38 (4A) ◽  
pp. 491-500
Author(s):  
Abeer F. Al-Attar ◽  
Saad B. H. Farid ◽  
Fadhil A. Hashim
Keyword(s):  
Ionic Conductivity ◽  
Electrochemical Impedance ◽  
Structural Information ◽  
Impedance Analysis ◽  
High Energy ◽  
Yttria Stabilized Zirconia ◽  
X Ray Diffraction ◽  
Stabilized Zirconia ◽  
Powder Morphology ◽  
X Ray

In this work, Yttria (Y2O3) was successfully doped into tetragonal 3mol% yttria stabilized Zirconia (3YSZ) by high energy-mechanical milling to synthesize 8mol% yttria stabilized Zirconia (8YSZ) used as an electrolyte for high temperature solid oxide fuel cells (HT-SOFC). This work aims to evaluate the densification and ionic conductivity of the sintered electrolytes at 1650°C. The bulk density was measured according to ASTM C373-17. The powder morphology and the microstructure of the sintered electrolytes were analyzed via Field Emission Scanning Electron Microscopy (FESEM). The chemical analysis was obtained with Energy-dispersive X-ray spectroscopy (EDS). Also, X-ray diffraction (XRD) was used to obtain structural information of the starting materials and the sintered electrolytes. The ionic conductivity was obtained through electrochemical impedance spectroscopy (EIS) in the air as a function of temperatures at a frequency range of 100(mHz)-100(kHz). It is found that the 3YSZ has a higher density than the 8YSZ. The impedance analysis showed that the ionic conductivity of the prepared 8YSZ at 800°C is0.906 (S.cm) and it was 0.214(S.cm) of the 3YSZ. Besides, 8YSZ has a lower activation energy 0.774(eV) than that of the 3YSZ 0.901(eV). Thus, the prepared 8YSZ can be nominated as an electrolyte for the HT-SOFC.

Spectroscopic investigation of the electronic structure of yttria-stabilized zirconia

2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Thomas Götsch ◽  
Erminald Bertel ◽  
Alexander Menzel ◽  
Michael Stöger-Pollach ◽  
Simon Penner
Keyword(s):  
Electronic Structure ◽  
Spectroscopic Investigation ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia
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