Nanomaterials, 2012 The wettability of reactively sputtered Y2O3, thermally oxidized Y-Y2O3 and Cd-CdO template assisted Y2O3 coatings has been studied. The wettability of as-deposited Y2O3 coatings was determined by contact angle measurements.
Natarajan T. Manikandanath +3 more
doaj +1 more source
Effect of 1 wt% LiF additive on the densification of nanocrystalline Y2O3 ceramics by spark plasma sintering [PDF]
, 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
Manufacturing and Macroscopic Properties of Y2O3 Coating Layer on Ceramic (AlN) Substrate Fabricated by Aerosol Deposition [PDF]
Archives of Metallurgy and Materials, 2018 This study attempted to manufacture an Y2O3 ceramic coating layer on a ceramic (AlN) substrate using aerosol deposition (AD) and investigated its macroscopic properties.
D.-Y. Wi +3 more
doaj +1 more source
Plastic deformation of dense nanocrystalline yttrium oxide at elevated temperatures [PDF]
, 2012 Nanocrystalline yttrium oxide, Y2O3 with 110 nm average grain size was plastically deformed between 800 ◦C and 1100 ◦C by compression at different strain rates and by creep at different stresses. The onset temperature for plasticity was at 1000 ◦C. Yield
Estournès, Claude +4 more
core +1 more source
CO<sub>2</sub> Activation by Small Copper, Cobalt, and Yttrium Oxide Clusters Probed via Infrared Multiple-Photon Dissociation Spectroscopy. [PDF]
ChemphyschemInfrared multiple photon dissociation spectroscopy is used to study the activation of CO2 on Cu‐, Co‐, and Y‐oxide clusters. While CO2 activation is not possible on cationic clusters, the binding motif on anionic clusters depends on a fine interplay between the nature and energetic location of the molecular orbitals and the charge (oxidation state) on ...
Mikolaj P, Bakker JM, Lang SM.
europepmc +2 more sources
Influence Of Y2O3 On The Structure Of Y2O3-Doped Batio3 Powder And Ceramics
, 2018 Barium titanate (BaTiO3) doped with rare-earth elements (REE) is used as dielectric in the manufacture of multilayer ceramic capacitors (MLCCs). The most common REE oxide employed as dopant for this application is Y2O3. The behavior of the Y3+ in the BaTiO3 structure depends on its concentration and the sintering conditions, among other factors, which ...
Hernández-López, Ana Maria +7 more
openaire +4 more sources
Measuring Local Exothermic Effects During the Oxidative Coupling of Methane Using Operando Luminescence Thermometry. [PDF]
Angew Chem Int Ed EnglOperando luminescence thermometry shows that the local catalyst temperature can exceed the set oven temperature by almost 250°C during the exothermic oxidative coupling of methane process. We demonstrate how the reactor dimensions, catalyst grain size, and reactant feed mixture affect the local temperature.
Groefsema DW +5 more
europepmc +3 more sources
Tạp chí Khoa họcZinc oxide (ZnO)-based varistor ceramics, incorporating varying amounts of Y2O3/CeO2, were fabricated through a twostep solid-state reaction method involving pre-calcination and subsequent sintering processes.
Nguyen Trung Huy, Nguyen Van Trang, Cao Thi Hong, Nguyen Thi Xuyen, Vo Thi Kieu Anh, Nguyen Quang Duong, Nguyen Tuan Anh, Le Dang Quang, Do Quang Tham*
doaj +1 more source
Iron-Based Catalysts on Tailored Alumina Supports for CO<sub>x</sub>-Free Methane Decomposition to H<sub>2</sub> and Carbon. [PDF]
ChemistryOpenFe‐10ZrAl catalyst enables catalytic methane decomposition into COx‐free H2 and solid carbon. ZrO2‐modified alumina improves Fe particle stabilization, reducibility, and carbon growth behavior, giving the best performance among the tested catalysts with 76.5% CH4 conversion and 74.1% H2 yield at 800 °C.
Alturki HS +10 more
europepmc +2 more sources
Excellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement
Materials & Design, 2021 In this article, Y2O3-reinforced tungsten composites are fabricated by using an improved wet chemical method combined with the spark plasma sintering (SPS). Triethanolamine (TEA) surfactant addition and an appropriate calcination process are innovatively
Gang Yao +8 more
doaj +1 more source