Results 21 to 30 of about 547,292 (342)

Microstructure and mechanical properties of Al2O3-Cu-Ni hybrid composites fabricated by slip casting [PDF]

open access: yesProcessing and Application of Ceramics, 2020
This work focuses on developing the fabrication method of hybrid composites based on Al2O3-Cu system with the addition of nickel phase. The composites were prepared by slip casting and the slurries with a high concentration of solid content were used ...
Justyna Zygmuntowicz   +5 more
doaj   +1 more source

Improvement of dielectric loss of doped Ba0.5Sr0.5TiO3 thin films for tunable microwave devices [PDF]

open access: yes, 2003
Al2O3-Ba0.5Sr0.5TiO3 (Al2O3-BST) thin films, with different Al2O3 contents, were deposited on (100) LaAlO3 substrate by pulsed laser deposition (PLD) technique.
C. K. Ong   +10 more
core   +2 more sources

Resolving the puzzle of single-atom silver dispersion on nanosized γ-Al2O3 surface for high catalytic performance

open access: yesNature Communications, 2020
Ag/γ-Al2O3 is widely used for catalyzing various reactions, and its performance depends on the valence state, morphology and dispersion of Ag species. However, detailed anchoring mechanism of Ag species on γ-Al2O3 remains largely unknown.
Fei Wang   +7 more
semanticscholar   +1 more source

Reducing the density deviation in alumina by pressure-vacuum hybrid slip casting by employing powders with different particle sizes

open access: yesJournal of Asian Ceramic Societies, 2020
We reduced the density variation in Al2O3 fabricated by pressure-vacuum hybrid slip casting (PVHSC) by adding small powders to large particles. In PVHSC, consolidation occurs not only by compression of the slip in the casting chamber but also by suction ...
Kyeong-Sik Cho   +3 more
doaj   +1 more source

Rare-earth ion doped Al2O3 for active integrated photonics

open access: yesAdvances in Physics: X, 2021
Aluminum oxide (Al2O3) is an emerging material in integrated photonics. It exhibits a very broad transparency window from the UV to the mid-IR, very low propagation losses and a high solubility for rare-earth ions leading to optical gain in different ...
Ward A. P. M. Hendriks   +6 more
doaj   +1 more source

New insights into the dust formation of oxygen-rich AGB stars [PDF]

open access: yes, 2013
We observed the AGB stars S Ori, GX Mon and R Cnc with the MIDI instrument at the VLTI. We compared the data to radiative transfer models of the dust shells, where the central stellar intensity profiles were described by dust-free dynamic model ...
Boboltz, D. A.   +5 more
core   +2 more sources

Studies of processes of the precursor formation for production of CuAl2O4 nanoceramics at the effect of double laser pulses on AD1 and M2 alloys in the air atmosphere

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
A study of formation of mixed Al nanopowders, copper and aluminum oxides, and precursors for production of CuAlO2 and CuAl2O4 nanoceramics under the influence of double laser pulses with energy of 53 mJ and the interpulse interval of 10 microseconds on a
Maxim N. Kovalenko   +5 more
doaj   +1 more source

Phase Transformations of Metallorganic Chemical Vapor Deposition Processed Alumina Coatings Investigated by In Situ Deflection [PDF]

open access: yes, 2007
Phase transformations of Al2O3 films, deposited by metallorganic chemical vapor deposition from aluminium tri-isopropoxide on AISI 301 stainless steel, were investigated using an original technique of deflection associated with X-ray diffraction and ...
Andrieux, Michel   +5 more
core   +5 more sources

Effects of ZrO2 and Al2O3 Addition on the Physical Properties of Cu-Mo-Cr Alloy by Liquid Phase Sintering [PDF]

open access: yesArchives of Metallurgy and Materials, 2021
In this study, the effect of the addition of ZrO2 and Al2O3 ceramic powders to Cu-Mo-Cr alloy was studied by examining the physical properties of the composite material. The ceramic additives were selected based on the thermodynamic stability calculation
Yeong-Woo Cho   +9 more
doaj   +1 more source

Surface modification of an Al2O3/SiO2 based ceramic treated with CO2, Nd:YAG, excimer and high power diode lasers for altered wettability characteristics [PDF]

open access: yes, 1998
Interaction of CO2, Nd:YAG, excimer and high power diode laser (HPDL) radiation with the surface of an Al2O3/SiO2 based ceramic was found to affect significant changes in the wettability characteristics of the material.
Lawrence, Jonathan   +2 more
core   +1 more source

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