PREPARATION OF DENSE TETRAGONAL ZIRCONIA CERAMICS FROM ZrO2 MICROPOWDERS

1986 ◽  
Vol 47 (C1) ◽  
pp. C1-237-C1-241
Author(s):  
A. SMITH ◽  
B. CALES ◽  
J. F. BAUMARD
Keyword(s):  
Tetragonal Zirconia ◽  
Zirconia Ceramics

Preparation of porous ceria doped tetragonal zirconia ceramics by capsule free hot isostatic pressing

1999 ◽  
Vol 98 (1) ◽  
pp. 19-23 ◽  
Author(s):  
S. Yin ◽  
S. Uchida ◽  
Y. Fujishiro ◽  
M. Ohmori ◽  
T. Sato
Keyword(s):  
Hot Isostatic Pressing ◽  
Tetragonal Zirconia ◽  
Zirconia Ceramics ◽  
Isostatic Pressing

scholarly journals Effect of cleaning agent, primer application and their combination on the bond strength of a resin cement to two yttrium-tetragonal zirconia polycrystal zirconia ceramics

2017 ◽  
Vol 11 (01) ◽  
pp. 006-011 ◽  
Author(s):  
William Matthew Negreiros ◽  
Glaucia Maria Bovi Ambrosano ◽  
Marcelo Giannini
Keyword(s):  
Bond Strength ◽  
Water Storage ◽  
Tetragonal Zirconia ◽  
Resin Cement ◽  
Zirconia Ceramic ◽  
Coupling Agents ◽  
Zirconia Ceramics ◽  
Cleaning Agent ◽  
Failure Data ◽  
Significant Difference

ABSTRACT Objective: The objective of this study is to evaluate the effect of a cleaning agent and priming on the bond strength (BS) of a resin cement (RC) to zirconia ceramics after 24 h and 1 year of water-storage. Materials and Methods: Fifty-six Katana and 56 ZirCAD zirconia ceramic plates were prepared and each zirconia brand was divided into four groups (n = 14): (1) untreated; (2) treated with Ivoclean cleaning agent; (3) treated with Monobond Plus coupling agent; (4) treated with Ivoclean + Monobond Plus. Cleaning and coupling agents were applied to zirconia following the manufacturers' instructions. The RC was manipulated, inserted into tubes (0.75 mm diameter/1 mm height) that were positioned on the zirconia surfaces and light activated. Specimens were tested after 24 h and 1 year of water storage. A shear load was applied to the base of the RC cylinders (until failure. Data were analyzed by three-way ANOVA and Tukey tests (α = 5%). Results: No significant difference in BS was noted between zirconia ceramics, except when the combination of cleaning and coupling agents was used. This combination increased the BS for Katana zirconia. One year of water storage leads to a decrease in BS for all experimental groups. Conclusion: The combination of cleaning agent and priming can yield higher BS for Katana at 24 h. BS to zirconia ceramics reduced approximately 50% after 1 year.

Transparent Tetragonal Zirconia Ceramics by Colloidal Processing of Nanoparticle Suspension

2014 ◽  
Vol 87 ◽  
pp. 85-90
Author(s):  
Martin Trunec ◽  
Oskar Bera
Keyword(s):  
Osmotic Dehydration ◽  
Hot Isostatic Pressing ◽  
Plate Thickness ◽  
Tetragonal Zirconia ◽  
Nanocrystalline Structure ◽  
Colloidal Processing ◽  
Zirconia Ceramics ◽  
Concentrated Suspensions ◽  
Nanoparticle Suspension ◽  
Average Grain Size

Colloidal processing was applied to a commercial 5 vol% 3Y-ZrO2 nanosuspension with a particle size of 10-15 nm. The nanosuspension was concentrated by evaporation or by the newly developed method of osmotic dehydration. The viscosity and stability of concentrated suspensions were investigated. The concentrated nanosuspension prepared by osmotic dehydration was consolidated by centrifugation in non-porous moulds. The dried deposit had a relative density of 46% and pores ranged from 4 to 8 nm. This deposit was densified by pressureless presintering to closed porosity, followed by hot isostatic pressing in order to obtain transparent ceramics. After sintering, the tetragonal zirconia retained the nanocrystalline structure with an average grain size of 65 nm and an in-line transmission of 25 % (at 633 nm wavelength and 0.5 mm plate thickness).

Fretting Wear of Self-Mated Tetragonal Zirconia Ceramics in Different Humidity

2001 ◽  
Vol 206-213 ◽  
pp. 783-786 ◽  
Author(s):  
B. Basu ◽  
R.G. Vitchev ◽  
Jef Vleugels ◽  
J.P. Celis ◽  
Omer Van der Biest
Keyword(s):  
Tetragonal Zirconia ◽  
Fretting Wear ◽  
Zirconia Ceramics

The effect of reduction on the mechanical properties of CeO2 doped tetragonal zirconia ceramics

2004 ◽  
Vol 52 (6) ◽  
pp. 1675-1682 ◽  
Author(s):  
M. Matsuzawa ◽  
M. Abe ◽  
S. Horibe ◽  
J. Sakai
Keyword(s):  
Mechanical Properties ◽  
Tetragonal Zirconia ◽  
Zirconia Ceramics

Low Friction in CuO-Doped Yttria-Stabilized Tetragonal Zirconia Ceramics: A Complementary Macro- and Nanotribology Study

2008 ◽  
Vol 91 (5) ◽  
pp. 1646-1652 ◽  
Author(s):  
Ewa Tocha ◽  
Henry R. Pasaribu ◽  
Dik J. Schipper ◽  
Holger Schönherr ◽  
G. Julius Vancso
Keyword(s):  
Tetragonal Zirconia ◽  
Zirconia Ceramics ◽  
Low Friction

Microstructure–toughness–wear relationship of tetragonal zirconia ceramics

2004 ◽  
Vol 24 (7) ◽  
pp. 2031-2040 ◽  
Author(s):  
Bikramjit Basu ◽  
Jozef Vleugels ◽  
Omer Van Der Biest
Keyword(s):  
Tetragonal Zirconia ◽  
Zirconia Ceramics ◽  
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