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
Effects of ZrO2 and Al2O3 Addition on the Physical Properties of Cu-Mo-Cr Alloy by Liquid Phase Sintering [PDF]
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
Rare-earth ion doped Al2O3 for active integrated photonics
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]
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
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]
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
Surface modification of an Al2O3/SiO2 based ceramic treated with CO2, Nd:YAG, excimer and high power diode lasers for altered wettability characteristics [PDF]
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
Fabrication of a High Wear Resistance AA7075/AL2O3 Composites Via Liquid Metallurgy Process
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
SiO2-CaO-Al2O3 Glass Solder for Joining of Al2O3 to Al2O3
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
Augmentation of the mechanical and chemical resistance characteristics of an Al2O3-based refractory by means of high power diode laser surface treatment [PDF]
Augmentation of the wear rate and wear life characteristics of an Al2O3-based refractory within both normal and corrosive (NaOH and HNO3) environmental conditions was effected by means of high power diode laser (HPDL) surface treatment.
Borodina +19 more
core +1 more source

