Results 21 to 30 of about 406,295 (339)

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

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

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

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

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

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

Augmentation of the mechanical and chemical resistance characteristics of an Al2O3-based refractory by means of high power diode laser surface treatment [PDF]

open access: yes, 2003
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

Home - About - Disclaimer - Privacy