Results 21 to 30 of about 164,543 (307)

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

Investigation on AA5083/AA7075+Al2O3 Joint Fabricated by Friction Stir Welding: Characterizing Microstructure, Corrosion and Toughness Behavior [PDF]

open access: yesMaterials Research, 2015
The effects of Al2O3 reinforcements on microstructure, corrosion and toughness properties of dissimilar aluminum alloys joint fabricated by friction stir welding (FSW) technique were explored in this research.
Mehdi Saeidi   +2 more
doaj   +2 more sources

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

SiO2-CaO-Al2O3 Glass Solder for Joining of Al2O3 to Al2O3

open access: yesHigh Temperature Materials and Processes, 1998
To utilize glass as a solder for joining of ceramics, the joining of Al 2 O 3 to Al 2 O 3 by glass solders with the compositions (mass %) of 33SiO 2 -34CaO-33Al 2 O 3 and 50SiO 2 -38CaO-12Al 2 O 3 has been investigated. The thermal expansion of these glasses and the wettability between glasses and alumina have been measured to confirm the ...
Ahn, B.-G., Shiraishi, Y.
openaire   +2 more sources

Numerical investigation of turbulent flow heat transfer and pressure drop of AL2O3/water nanofluid in helically coiled tubes [PDF]

open access: yes, 2013
Passive convective heat transfer enhancement can be achieved by improving the thermo-physical properties of the working fluid, changing flow geometry or both.
Mahmoud, Saad   +7 more
core   +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

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

Fabrication of a High Wear Resistance AA7075/AL2O3 Composites Via Liquid Metallurgy Process

open access: yesInternational Journal of Applied Mechanics and Engineering, 2022
In the present study, AA7075/Al2O3 composites have been fabricated via liquid metallurgy process. AA7075 alloy and Al2O3 particles were taken as the base matrix and reinforcements, respectively. Then, contents of 3 and 6 wt.
R. Sivaraman   +5 more
doaj   +1 more source

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

Atomic layer deposited films of Al2O3 on fluorine-doped tin oxide electrodes: stability and barrier properties

open access: yesBeilstein Journal of Nanotechnology, 2021
Al2O3 layers were deposited onto electrodes by atomic layer deposition. Solubility and electron-transport blocking were tested. Films deposited onto fluorine-doped tin oxide (FTO, F:SnO2/glass) substrates blocked electron transfer to redox couples ...
Hana Krýsová   +5 more
doaj   +1 more source

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