Results 171 to 180 of about 22,022,044 (223)

Micropatterned Silica Films with Nanohydroxyapatite for Y-TZP Implants

open access: yesJournal of Dental Research, 2018
This investigation aimed at developing micropatterned silica thin films (MSTFs) containing nanohydroxyapatite (nano-HA) microaggregates that were not completely covered by silica so that they could directly interact with the surrounding cells.
R B P, Miranda   +5 more
openaire   +3 more sources

Adhesion to Y-TZP ceramic: study of silica nanofilm coating on the surface of Y-TZP.

Journal of biomedical materials research. Part B, Applied biomaterials, 2015
This study evaluated the influence of silica-based film coatings on the surface of yttrium-stabilized tetragonal zirconia polycrystal (Y-TZP), in particular on the durability of the bond strength between the ceramic and resin cement. Eighty Y-TZP (In-Ceram YZ, Vita) blocks (4 × 4 × 3 mm) were obtained and divided into four groups according to the ...
Carolina Ceolin, Druck   +4 more
openaire   +2 more sources

Effects of Surface Treatments on Y-TZP Phase Stability, Microstructure and Osteoblast Cell Response [PDF]

open access: yesCeramics International, 2015
The effects of hydrothermal and phosphoric acid treatments on the tetragonal ZrO2 stability and surface microstructure were determined for 3mol% yttria- partially stabilized zirconia (Y-TZP) and Al2O3 doped Y-TZP (Y-TZPA).
Maria P Albano   +2 more
exaly   +2 more sources

Bonding of stabilised zirconia (Y-TZP) by means of nano Y-TZP particles

Materials Science and Engineering: A, 2001
A technique has been developed for bonding conventionally produced plates of yttria stabilised tetragonal zirconia polycrystals (Y-TZP) to one another by using nano-sized particles of the same chemical composition as an interlayer. The latter was in the form of a disc partially pre-consolidated at elevated temperature.
B. Cina, I. Eldror
openaire   +1 more source

Joining of Y-TZP parts

Scripta Metallurgica et Materialia, 1995
Based on the grain boundary sliding (GBS) mechanism, the authors used the structural superplasticity of a 3 mol% Y{sub 2}O{sub 3}-tetragonal ZrO{sub 2} polycrystals (Y-TZP) as a new technique to join two pieces of this material. The fully dense 3 mol% Y-TZP material was obtained from 3Y-TZP powders (Tosoh Co. Japan) which were cold pressed, sintered at
J. Ye, A. Dominguez-Rodriguez
openaire   +1 more source

Friction and wear of Y-TZP and Y-TZP-Al2O3 ceramics in high-speed sliding on steel

Journal of Friction and Wear, 2009
The processes of wear of tetragonal zirconia-based ceramics partially stabilized with yttrium oxide (Y-TZP) are studied during dry high-speed sliding in pin-on-disk pairs at sliding velocities up to 47 m/s. It is shown that these wear tests produce tribolayers of intricate composition on the surface of the Y-TZP and Y-TZP-Al2O3 ceramic materials ...
N. L. Savchenko, S. N. Kul’kov
openaire   +1 more source

SEM observations of porcelain Y-TZP interface

Dental Materials, 2009
The metastability of the tetragonal phase of yttria tetragonal zirconia polycrystalline (Y-TZP) ceramics is a cause for concern in dental crown and bridge applications. One specific problematic area is the nature of the interface between the veneering porcelain and the Y-TZP framework and whether the associated preparation procedures and reactions ...
Michael J, Tholey   +2 more
openaire   +2 more sources

Crack Propagation Behavior of Y‐TZP Ceramics

Journal of the American Ceramic Society, 1995
Y‐TZP ceramics present the twofold advantage of a very fine grain size and a phase transformation leading to some reinforcement, making them useful in hip joint head prostheses. The subcritical crack growth of such a material that mainly drives the lifetime of the components has been evaluated for wide crack ...
Chevalier, Jérome   +3 more
openaire   +2 more sources

Sintering, Microstructure and Hardness of Y-TZP- 64S Bioglass Ceramics [PDF]

open access: yesCeramics International, 2018
3 mol% yttria-partially stabilized zirconia (Y-TZP) powder and a sol-gel derived CaO- P2O5- SiO2 (64S) bioglass, were used to produce Y-TZP- 64S slip cast compacts.
Maria P Albano, María Susana Conconi
exaly   +2 more sources

Y-TZP ceramics for artificial joint replacements

Biomaterials, 1998
Due to their excellent mechanical properties, Yttria-stabilized Tetragonal Zirconia Polycrystal ceramics (Y-TZP) are used in ball heads for Total Hip Replacements. It is known that Y-TZP materials may show strength degradation due to ageing or to hydrothermal treatment. Also high wear of UHMWPE sockets coupled to steam sterilized Y-TZP ball heads after
C, Piconi   +8 more
openaire   +2 more sources

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