Influence of low temperature ageing on optical and mechanical properties of transparent yittria stabilized-zirconia cranial prosthesis

2018 ◽  
Author(s):  
Guillermo Aguilar ◽  
Nami Davoodzadeh ◽  
David Halaney ◽  
Gottlieb Uahengo ◽  
Javier E. Garay
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Stabilized Zirconia ◽  
Temperature Ageing ◽  
Optical And Mechanical Properties

scholarly journals Synthesis of Graphene on Ni/SiC Structure

2016 ◽  
Vol 67 (2) ◽  
pp. 149-151 ◽  
Author(s):  
Petr Machac ◽  
Tomas Hrebicek
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Scientific Community ◽  
Nickel Silicide ◽  
Promising Material ◽  
Layer Graphene ◽  
Optical And Mechanical Properties ◽  
Few Layer Graphene

Abstract graphene is a promising material with excellent electrical, thermal, optical and mechanical properties. Therefore, it is a material of high relevance for various applications in many branches of technique. Graphene has received much attention recently in scientific community. The contribution reports formation and characterization of few-layer graphene (FLG) films on a SiC substrate from nickel silicide supersaturated with carbon by annealing at a favourable low temperature.

Low temperature ageing in water vapor and mechanical properties of ZTA ceramics

2002 ◽  
Vol 56 (6) ◽  
pp. 1014-1018 ◽  
Author(s):  
Ruisong Guo ◽  
Duoli Guo ◽  
Dan Zhao ◽  
Zhengfang Yang ◽  
Yuru Chen
Keyword(s):  
Mechanical Properties ◽  
Water Vapor ◽  
Low Temperature ◽  
Temperature Ageing

Mechanical properties, translucency, and low temperature degradation (LTD) of yttira (3-6 mol%) stabilized zirconia

2021 ◽  
Author(s):  
Sharon R. Uwanyuze ◽  
Sulekha Ramesh ◽  
Mark K. King ◽  
Nathaniel Lawson ◽  
Manoj K. Mahapatra
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Stabilized Zirconia

Synthesis, microstructural, optical and mechanical properties of yttria stabilized zirconia thin films

2012 ◽  
Vol 536 ◽  
pp. S412-S417 ◽  
Author(s):  
P. Amézaga-Madrid ◽  
A. Hurtado-Macías ◽  
W. Antúnez-Flores ◽  
F. Estrada-Ortiz ◽  
P. Pizá-Ruiz ◽  
...  
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Optical And Mechanical Properties

scholarly journals Investigating the effect of yttria contents on the structure and mechanical properties of zirconia ceramics

2016 ◽  
Vol 19 (4) ◽  
pp. 232-240
Author(s):  
Linh Ba Ngoc Nguyen ◽  
Dung Van Hoang ◽  
Van Thi Thanh Tran
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Critical Concentration ◽  
Annealing Process ◽  
Yttria Stabilized Zirconia ◽  
Precipitation Method ◽  
Stabilized Zirconia ◽  
Zirconia Ceramics ◽  
Grain Sizes ◽  
Co Precipitation

In this study, the co- precipitation method and annealing process were used to prepare the yttria stabilized zirconia ceramics. Data of Raman and XRD showed that an increase of yttria doping leads to an decrease of the ratio between monoclinic and tetragonal phases. Howerver, it existed a critical concentration of yttrium at which the highest value of hardness was about 14.5 GPa and grain sizes of 0.2–0.5 m. An investigation of low temperature degradation indicated that theaging process only occurred in the first 5 hours and then virtually negligible changes.

Effect of Al2O3 on the Phase Stability of Y-Ce-TZP/Al2O3 Composites at Low Temperature

2007 ◽  
Vol 336-338 ◽  
pp. 1190-1193
Author(s):  
Xu Ping Lin ◽  
Jing Tao Ma ◽  
Bao Qing Zhang ◽  
Qiang Lin
Keyword(s):  
Mechanical Properties ◽  
Phase Transformation ◽  
Water Vapor ◽  
Low Temperature ◽  
Phase Stability ◽  
Stabilized Zirconia ◽  
Al2o3 Particles ◽  
Aging In Air

The mechanical properties and the phase stability in yttria and ceria stabilized zirconia containing 0-20wt% A12O3 during aging in air (300°C) and in water vapor (150°C, 180°C, 200°C and 250°C) are investigated in this paper. It is found that water can greatly accelerate the degradation of Y-Ce-TZP. The addition of Al2O3 to Y-Ce-TZP prevents the low temperature degradation in air. Also Al2O3 particles can restrain the phase transformation of tetragonal to monoclinic in Y-Ce-TZP under water vapor condition when the temperature is below 200°C.

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).

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