Results 1 to 10 of about 55,297 (275)

Effects of various aging modes on the optical properties of zirconia with different yttria concentrations in coffee and tea [PDF]

Journal of Dental Sciences
Background/purpose: The esthetic performance of dental zirconia may be affected by both material composition and environmental exposure. This study aimed to evaluate how different aging conditions-hydrothermal aging and thermal cycling-influenced the ...
Chih-Wei Tseng, Chenmin Yao, Liang-Yu Wei, Pei-Wen Peng, Wei-Chun Lin   +4 more
doaj   +2 more sources

Tetragonal zirconia: Wet chemical preparation, mechanical and electrical properties [PDF]

, 1985
Yttria-stabilized zirconia powders were prepared in the composition range of 3 to 13 at% yttria. The hydrolysis-gel precipitation technique was used, starting from metal alkoxides or chlorides.
Burggraaf, A.J., Graaf, M.A.C.G. van de, Hemert, M. van, Keizer, K.   +3 more
core   +31 more sources

Room temperature plasticity of zirconia-yttria-titania ceramics: Experimental indications and structural modelling [PDF]

Processing and Application of Ceramics, 2022
Yttria-stabilized tetragonal zirconia (Y-TZP) ceramics have excellent mechanical properties. However, such materials cannot undergo plastic deformation at room temperature due to their high hardness and brittleness values, hindering machinability.
Ussui Valter, Lazar Dolores Ribeiro Ricci, de Lima Nelson Batista, Arata Anelyse, Ribeiro Fabio Negreiros, Dalpian Gustavo Martini, Marchi Juliana, Paschoal José Octavio Armani   +7 more
doaj   +1 more source

Cytotoxicity and biocompatibility of high mol% yttria containing zirconia [PDF]

Restorative Dentistry & Endodontics, 2020
ObjectivesYttria-stabilized tetragonal phase zirconia has been used as a dental restorative material for over a decade. While it is still the strongest and toughest ceramic, its translucency remains as a significant drawback.
Gulsan Ara Sathi Kazi, Ryo Yamagiwa
doaj   +1 more source

Thermal Conductivity of Yttria-Gadolinia Solid Solution Optical Ceramics in the Temperature Range 50–300 K

Inorganics, 2022
This study looked at the thermal conductivity of translucent (Y1−xGdx)2O3 (where 0 ≤ x ≤ 1) solid solution ceramics in the temperature range from 50 K to 300 K.
Stanislav Balabanov, Timofey Evstropov, Dmitry Permin, Olga Postnikova, Alexander Praded, Pavel Popov   +5 more
doaj   +1 more source

Investigation of the Applicability of Y₂O₃–ZrO₂ Spherical Nanoparticles as Tribological Lubricant Additives

Lubricants, 2022
Long-term environmental goals will motivate the automotive industry, component suppliers, and lubricating oil developers to reduce the friction of their tribosystems to improve overall efficiency and wear for increased component lifetime.
Ádám I. Szabó, Álmos D. Tóth, Máté Zs. Leskó, Hajnalka Hargitai   +3 more
doaj   +1 more source

Surface Damage and Microstructure Evolution of Yttria Particle-Reinforced Tungsten Plate during Transient Laser Thermal Shock

Metals, 2022
Tungsten and its alloys are considered to be the most nominated plasma-facing materials in fusion reactors, which will be exposed to enormously rigorous conditions such as thermal load, plasma exposure, and neutron radiation.
Daya Ren, Ya Xi, Jie Yan, Xiang Zan, Laima Luo, Yucheng Wu   +5 more
doaj   +1 more source

Tribological Properties of the Nanoscale Spherical Y₂O₃ Particles as Lubricant Additives in Automotive Application

Lubricants, 2022
The continuous tribological development of engine lubricants is becoming more and more vital due to its fuel efficiency improvement and lifetime increasing potential.
Álmos D. Tóth, Ádám I. Szabó, Máté Zs. Leskó, Jan Rohde-Brandenburger, Rajmund Kuti   +4 more
doaj   +1 more source

Synthesis of Thulium-yttria Nanoparticles with EPR Response

Brazilian Journal of Radiation Sciences, 2022
Approaches to form new materials for radiation dosimetry are essential to enhance quality assurance and quality improvement practices based on radiation protection concept.
Silas Santos, Orlando Rodrigues, Letícia Lucente Campos Rodrigues   +2 more
doaj   +1 more source

Microstructure and Phases Analysis for Advanced Plasma Sprayed Zirconia-Ceria-Yttria Thermal Barrier Coating [PDF]

Engineering and Technology Journal, 2017
Thoroughly qualitative and quantitative topography, microstructure, splats formation and phases evaluation were made to understand carefully the behavior of plasma sprayed zirconia-ceria-yttria coatings processed under near optimum processing conditions.
M.J. Kadhim, M.H. Hafiz, M.A. Ali bash
doaj   +1 more source