Results 21 to 30 of about 18,795 (238)

Morphology and structure of YSZ powders: Comparison between xerogel and aerogel [PDF]

open access: yes, 2009
Yttria-stabilized zirconia (YSZ) fine powders were prepared via sol–gel route in order to shape thermal barrier coatings (TBCs) from these powders. The main objective is to develop new undirectional coatings to allow best thermo-mechanical accommodations
Ansart, Florence   +4 more
core   +1 more source

Effect of 1 wt% LiF additive on the densification of nanocrystalline Y2O3 ceramics by spark plasma sintering [PDF]

open access: yes, 2011
Densification of nanocrystalline cubic yttria (nc-Y2O3) powder, with 18 nm crystal size and 1 wt% LiF as a sintering additive was investigated. Specimens were fabricated by spark plasma sintering at 100 MPa, within the temperature range of 700–1500 °C ...
Estournès, Claude   +7 more
core   +1 more source

Eu, Gd-Codoped Yttria Nanoprobes for Optical and T1-Weighted Magnetic Resonance Imaging

open access: yesNanomaterials, 2017
Nanoprobes with multimodal functionality have attracted significant interest recently because of their potential applications in nanomedicine. This paper reports the successful development of lanthanide-doped Y2O3 nanoprobes for potential applications in
Timur Sh Atabaev   +9 more
doaj   +1 more source

The Effect of Yttria Content on Microstructure, Strength, and Fracture Behavior of Yttria-Stabilized Zirconia

open access: yesMaterials, 2022
Yttria-stabilized zirconia (YSZ) is well-known as a material with perfect mechanical, thermal, and electrical properties. It is used for manufacturing various high-temperature components for aerospace and energy generation, as well as wear- and corrosion-resistant devices in medicine.
Volodymyr Kulyk   +5 more
openaire   +4 more sources

Re-Melting Nb–Si-Based Ultrahigh-Temperature Alloys in Ceramic Mold Shells

open access: yesMetals, 2019
In furnaces with different heating elements, Nb−Si based ultrahigh-temperature alloy rods were re-melted in pure yttria mold shells and zirconia face-coat mold shells at 1850 °C for 30 min.
Yin Wang, Xiping Guo
doaj   +1 more source

Yttria-stabilized tetragonal zirconia prepared using gel casting and two-stage sintering

open access: yes, 2023
Gel casting technology and a two-stage sintering process were used to produce yttria-stabilized tetragonal zirconia (YTZP) ceramics with excellent mechanical properties. A carbonic acid-based polyelectrolyte dispersant was used as a dispersant to prepare
Hsing-I Hsiang (13002587)   +3 more
core   +1 more source

The effect of Y2O3 addition on thermal shock behavior of magnesium aluminate spinel [PDF]

open access: yesScience of Sintering, 2009
The effect of yttria additive on the thermal shock behavior of magnesium aluminate spinel has been investigated. As a starting material we used spinel (MgAl2O4) obtained by the modified glycine nitrate procedure (MGNP).
Pošarac Milica   +4 more
doaj   +1 more source

Microstructure and Wear Rate of Yttria Reinforced Aluminum – Silicon Matrix Composites [PDF]

open access: yesEngineering and Technology Journal, 2010
In this research, composite materials of hypereutectic aluminum – silicon as a matrix reinforced with different volume fractions (2%, 4%, 6%, 8%) of Yttria particles with grain size between (50 - 75 μm) are prepared. The composites are prepared by vortex
doaj   +1 more source

Yttria stabilized zirconia membrane stability in molten fluoride fluxes for low-carbon magnesium production by the SOM process [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2013
The Solid Oxide Membrane (SOM) process for magnesium production involves the direct electrolysis of magnesium oxide for energy efficient and low-carbon magnesium production.
Milshtein J.   +4 more
doaj   +1 more source

Damage tolerance of six dental zirconias with different translucencies

open access: yesBiomaterial Investigations in Dentistry, 2020
Purpose High-translucent dental zirconia has been introduced as a suitable material for anterior monolithic restorations. The material composition differs from traditional 3Y-TZP both with regard to yttria content and grain size.
Cathrine Å. Karlsen   +2 more
doaj   +1 more source

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