Results 61 to 70 of about 347,742 (199)

A novel route for controlling and improving the texture of porous structures through dual growth of alumina nanoparticles and carbon nanotubes using explosion process of solid fuel

open access: yesJournal of Materials Research and Technology, 2020
Micro- and meso-porous structures of alumina have attracted attention for their potential use in different applications. In this research, a novel and facile route was introduced for dual growth of alumina nanoparticles and carbon nanotubes together to ...
Osama Saber   +4 more
doaj   +1 more source

Developing the Alumina Hybrid Sol-Gel Coating for Steel Oxidation Protection at High Temperatures [PDF]

open access: yesEngineering and Technology Journal, 2014
The use of nano alumina thin film by hybrid sol-gel route to protect steel from high-temperature oxidation is limited due to the low thermal stability of this coat. In this work, study has been conducted to minimize this effect. The chemical compositions
Mohammed Hussein J. Al Atia
doaj   +1 more source

Alumina-promoted oxodefluorination

open access: yesRSC Advances, 2020
A simple protocol for the clean preparation of heterocyclic compounds containing dibenzofuran's coreviaoxodefluorination of fluoroarenes on activated γ-Al2O3is reported.
Akhmetov Vladimir   +2 more
openaire   +3 more sources

Study some thermal properties for hybrid composite reinforced with particales [PDF]

open access: yesEngineering and Technology Journal, 2015
In this work a hybrid composite materials were prepared containing matrix of polymer blend (Novolac 80% + Epoxy 20%) reinforced by different reinforcing materials (Alumina Powder (type α) + Silica Powder + Asbestos short fiber) with two values of volume ...
Ali Hassan R.Al-Azzawi   +2 more
doaj   +1 more source

Nuclear radiation problems, unmanned thermionic reactor ion propulsion spacecraft [PDF]

open access: yes, 1972
A nuclear thermionic reactor as the electric power source for an electric propulsion spacecraft introduces a nuclear radiation environment that affects the spacecraft configuration, the use and location of electrical insulators and the science ...
Mondt, J. F.   +2 more
core   +1 more source

Structural characterization of the scale formed on a Ti–46Al–8Nb alloy oxidised in air at 700 C [PDF]

open access: yes, 2010
The structures of the oxide scale formed on a lamellar (gþ a2) Ti46Al8Nb alloy after heat-treatment in air at 700 C for 50 and 1000 h have been compared.
Lacaze, Jacques   +5 more
core   +2 more sources

Performance evaluation of optical attocells configuration in an indoor visible light communication [PDF]

open access: yes, 2019
Visible light communication VLC is deemed as futuristic technology applied for both illumination and data communication due to the low-cost energy consumption, long life expectancy, huge bandwidth, and high security compared to radio frequency RF ...
Abdullah, Mohammad Faiz Liew   +1 more
core   +1 more source

Preparation and crystallization kinetics of silica-based ceramic cores modified by alumina

open access: yesCailiao gongcheng
Alumina is a common mineralizer in silica-based ceramic cores, but its promotion or inhibition effects on the crystallization of fused-silica are in contrary conclusions.
FAN Hongna   +5 more
doaj   +1 more source

Research on the Sustainable Development of Alumina Industry in China-Based on the Perspective of Environmental Governance [PDF]

open access: yesE3S Web of Conferences
This paper analyzes the main contradictions and challenges in the development of China's alumina industry in terms of resources, production costs and environmental governance, compares the production cost of China's alumina with that of other countries ...
Yao Jingwu   +3 more
doaj   +1 more source

Protective Alumina Coatings by Low Temperature Metalorganic Chemical Vapour Deposition [PDF]

open access: yes, 2007
Alumina thin films were processed from aluminium tri-iso-propoxide in a horizontal, with N2 as a carrier gas, occasional addition of water in the gas phase, deposition temperature in the range 350-700°C, total pressure 0.67 kPa (2 kPa when water was used)
Alphonse, Pierre   +5 more
core   +1 more source

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