Results 281 to 290 of about 547,292 (342)

Preparation and Characterization of FeCo-Al2O3 and Al2O3 Aerogels

Journal of Sol-Gel Science and Technology, 2004
Nanocrystalline γ-Al2O3 and FeCo-Al2O3 nanocomposites containing FeCo alloy nanoparticles well dispersed in the nanocrystalline γ-Al2O3 matrix were successfully obtained by the sol-gel method using aluminum tri-sec-butoxide and iron and cobalt nitrates as precursors.
CORRIAS, ANNA, CASULA, MARIA FRANCESCA, FALQUI, ANDREA, Paschina G.   +3 more
openaire   +2 more sources

Microstructural study of the κ-Al2O3 → α-Al2O3 transformation in CVD κ-Al2O3

Surface and Coatings Technology, 1992
The microstructural variations occurring during the κ → α transformation in CVD κ-Al2O3 coatings subjected to isothermal heat treatments have been investigated. The microstructures developed in the partly transformed κ-Al2O3 layer (32% α-Al2O3) and fully transformed κ-Al2O3 layer (100% α-Al2O3) were studied and compared with as-deposited κ-Al2O3 (100 ...
J. Skogsmo, M. Halvarsson, S. Vuorinen
openaire   +1 more source

Synthesis of PDA-BN@f-Al2O3 hybrid for nanocomposite epoxy coating with superior corrosion protective properties

, 2020
A novel PDA-BN@f-Al2O3 nanohybrid was synthesized by depositing Al2O3 nanoparticles modified with γ -Aminopropyltriethoxysilane (KH550) on the surface of hexagonal boron-nitride (h-BN) sheets covered with polydopamine (PDA).
Pengying Wan, Nie Zhao, Fugang Qi, Biao Zhang, Hailong Xiong, Heng Yuan, B. Liao, Ouyang Xiaoping   +7 more
semanticscholar   +1 more source

Acetone hydrogenation over co-precipitated Ni/Al2O3, Co/Al2O3 and Fe/Al2O3 catalysts

Journal of the Chemical Society, Faraday Transactions, 1998
Co-precipitated Ni/Al2O3, Co/Al2O3 and Fe/Al2O3 catalysts containing 10–50 wt.% of metal are prepared and characterized by BET surface area, pore volume and XRD. Hydrogen chemisorption and oxygen uptake measurements are used to estimate the extent of reduction and the available surface metal sites. Acetone hydrogenation under vapour phase conditions is
Sankarasubbier Narayanan, Ramachandranpillai Unnikrishnan   +1 more
openaire   +1 more source

Role of Al2O3 in Al2O3–Bi2O3–P2O5 glasses

Applied Physics A, 2021
Research on ternary Al2O3–P2O5–Bi2O3 glasses had been achieved. The changes in density and ultrasonic velocities were used to determine the elastic moduli and Debye temperature of the glasses. The investigated ultrasonic parameters were correlated with the structural variations represented by the FTIR spectra to examine the function of Al2O3 in the ...
Yasser B. Saddeek, A. El-Denglawey, H. Doweidar   +2 more
openaire   +1 more source

Energy and exergy comparison of a flat-plate solar collector using water, Al2O3 nanofluid, and CuO nanofluid

Applied Thermal Engineering, 2019
The performance of a flat-plate solar collector was investigated by using water, Al2O3 nanofluid, and CuO nanofluid as the working fluids. The energy efficiency, entropy generation, exergy destruction, and exergy efficiency were analyzed and compared ...
Y. Tong, Hoseong Lee, Woobin Kang, Honghyun Cho   +3 more
semanticscholar   +1 more source

Thermodynamic assessment of the Al2O3–ZrO2, CaO–Al2O3–ZrO2, and Al2O3–SiO2–ZrO2 systems

Ceramics International, 2022
Abstract All available thermodynamic data and phase diagram data in the Al2O3–ZrO2, CaO–Al2O3–ZrO2, and Al2O3–SiO2–ZrO2 systems at 1 bar total pressure were critically evaluated and assessed simultaneously to obtain a set of the optimized Gibbs energies of all phases in the systems.
Sun Yong Kwon, In-Ho Jung
openaire   +1 more source

Al2O3 nano additives blended Polanga biodiesel as a potential alternative fuel for existing unmodified DI diesel engine

, 2020
The current research work emphases on analysing the characteristics of combustion, performance, and emissions of Polanga Biodiesel (PBD) fuelled single-cylinder diesel engine with Al2O3 nano-additives added at a concentration of 25 ppm and 50 ppm.
H. Venu, Prabhu Appavu
semanticscholar   +1 more source

Preparation of high-porosity Al2O3 ceramic foams via selective laser sintering of Al2O3 poly-hollow microspheres

, 2020
In this paper, high-porosity Al2O3 ceramic foams called Al2O3 PHM ceramics were fabricated through selective laser sintering (SLS) via Al2O3 poly-hollow microspheres (Al2O3 PHMs).
Shanshan Liu, M. Li, Jia‐Min Wu, An-Nan Chen, Yusheng Shi, Chen-Hui Li   +5 more
semanticscholar   +1 more source

In-situ DRIFTS study of two-step CO2 capture and catalytic methanation over Ru,“Na2O”/Al2O3 Dual Functional Material

Applications of Surface Science, 2019
Dual Function Materials (DFM) are composed of an alkali or alkaline earth CO2 adsorbent phase and a supported catalyst. It selectively captures CO2 which is then methanated using renewable H2. Both the capture and methanation steps are conducted at about
Laura Proaño, Edisson Tello, Martha A. Arellano-Treviño, Shuoxun Wang, R. Farrauto, Martha Cobo   +5 more
semanticscholar   +1 more source