Y2O3 ceramics containing up to 4 at.%Zn2+ were prepared by infiltrating a zinc acetate water solution into pre-sintered matrix of Y2O3. After pressureless sintering for 2 h at 1400 °C, ZnO grains dispersed in an identified. The photoluminescence (PL) spectra the Y2O3:ZnO exhibit very broad emission band over entire visible spectral range with intensity maximum about 570−590 nm. PL increases inc...

In this research Bi2O3 was doped with mixtures of 8, 10, 12 and 18 mol % of Y2O3 and Yb2O3 to stabilizing the δ-Bi2O3 phase using solid state reaction technique. Experimental samples were fabricated by isostatic pressing and sintering at 850 °C for 24 h. X-ray diffraction analysis detected cubic phase (δ-Bi2O3) as the sole stable crystalline phase in samples including 12 and 18 mol % of Y2O3 an...

In this report, the development of multi-channel anti-Stokes luminescent Y2O3 nanoparticles for application to in vivo upconversion imaging is detailed.

Y2O3-reinforced Al-Si alloy coatings were prepared on the surface of a Mg by laser cladding technique. The microstructure, hardness, and wear resistance analyzed using an X-ray diffractometer, scanning electron microscope, energy spectrometer, Vickers hardness tester, friction tester. effect different additions Y2O3 microstructure properties was investigated. results indicate that addition lead...

Rare earth ion-doped yttrium oxide (Y2O3) nanocrystals are nontoxic and can be prepared as upconversion materials for cellular imaging, but they do not suspend well in water. In contrast to their tendency to dissolve in acidic media, yttria (Y2O3) nanoparticles readily react with phosphonic acids to give phosphonate-bonded yttria particles. Through the choice of phosphonic acid, the hydrophilic...

Highly compact green bodies are usually required to fabricate transparent or translucent polycrystalline yttrium oxide. The present work reports on the fabrication of highly dense (ρrel >98%) Y2O3 from low-density by exploiting a high sinterability nano powder. A commercial Y2O3, with crystallite size ca. 30 nm, was shaped uniaxial pressing and, afterwards, densified pre-sintering at 1500 °C fo...

Single-crystalline Y(OH)3:Eu nanowires have been prepared by polymer-assisted hydrothermal method. The yields of the nanowires were higher than 95%. XRD patterns showed that the products were the hexagonal Y(OH)3 structure. SEM images displayed that the nanowires consisted of nanobelts and nanorods. The nanorods have the diameter of about 85 nm and length up to several tens of microns, and the ...