Results 21 to 30 of about 453,181 (168)

A dimensionless study of the evaporation and drying stages in spray pyrolysis [PDF]

open access: yes, 2007
An original dimensionless study of the pure evaporation and precipitation stages of a spray pyrolysis process has been performed. An estimation of the evaporation time is proposed and the influence of the main processing parameters has been investigated.
Caussat, Brigitte, Reuge, Nicolas
core   +1 more source

Preparation of W-Cu Composite Powders by Hydrogen Reduction of WO3 And Copper Nitrate Mixture [PDF]

open access: yesArchives of Metallurgy and Materials
The synthesis of fine W composite powder with homogeneously dispersed Cu particles was investigated. Commercial or ultrasonic spray pyrolysis WO3 powders were used as source materials of W, and copper nitrate was added and hydrogen-reduced to finally ...
Ji Won Choi   +4 more
doaj   +1 more source

Formation and application of hydrogen in non-ferrous metallurgy

open access: yesVojnotehnički Glasnik, 2023
Introduction/purpose: Hydrogen is the most abundant element in the universe (75 % by mass) and the lightest element (with a density of 0.00082 g/cm3) which consists of only one proton and one electron. Because of its presence in many different forms such
Srećko R. Stopić, Bernd G. Friedrich
doaj   +1 more source

Y2O3:Eu micronic particles synthesised by spray pyrolysis: Global modelling and optimisation of the evaporation stage [PDF]

open access: yes, 2008
There are a number of some major advantages to be gained in processing micronic europium-doped yttrium oxide Y2O3 particles for phosphor applications using spray pyrolysis.
Caussat, Brigitte   +3 more
core   +1 more source

The Formation of Ultrafine Particles of Metal Sulfide by the Electrostatic Spray Pyrolysis Method [Translated]†

open access: yesKONA Powder and Particle Journal, 2014
In the preparation of fine particles of metal sulfide such as zinc sulfide and cadmium sulfide using the spray pyrolysis method, the electrostatic spray method was applied to atomize the starting solutions.
Kikuo Okuyama   +4 more
doaj   +1 more source

Synthesis of Brookite Titanium Dioxide Nanorods using Salt-Assisted Ultrasonic Spray Pyrolysis Process and their Photocatalytic Activities [PDF]

open access: yesArchives of Metallurgy and Materials
Here, We present the first-ever synthetic method based on the salt-assisted ultrasonic spray pyrolysis process of pure brookite TiO2 nanorods. H2TiF6 and NaNO3 were used as a titanium precursor and salt for the synthesis, the NaNO3 contributes to the ...
Hee Yeon Jeon   +4 more
doaj   +1 more source

Synthesis of nanosized metal particles from an aerosol

open access: yesVojnotehnički Glasnik, 2013
The synthesis of metallic nanoparticles from the precursor solution of salts using the ultrasonic spray pyrolysis method was considered in this work. During the control of process parameters (surface tension and density, the concentration of solution ...
Srećko R. Stopić
doaj   +1 more source

Flame-Assisted Spray Pyrolysis Using an Annular Flame Nozzle with Decoupled Velocity Control

open access: yesJournal of Manufacturing and Materials Processing, 2018
Flame spray pyrolysis, widely used in chemical industries, is a technology to synthesize nanoparticles. While the flame spray pyrolysis uses fuels as a solution liquid, the flame-assisted spray pyrolysis method uses aqueous solutions.
Maxym Rukosuyev   +4 more
doaj   +1 more source

Preparation of ultrafine Sm2Fe17N3 magnetic powders without ball milling

open access: yesJournal of Materials Research and Technology, 2023
Ultrafine Sm2Fe17N3 powders obtained via ball or airflow milling usually exhibit defects and localized demagnetization owing to their irregular morphologies.
Jing Wang   +12 more
doaj   +1 more source

Spray-processed nanoporous BiVO4 photoanodes with high charge separation efficiency for oxygen evolution

open access: yesAPL Materials, 2020
Spray pyrolysis is a convenient method for fabricating BiVO4 photoanondes from a precursor solution. As the precursor solution of spray pyrolysis can significantly influence the nanostructure and the amount of oxygen vacancies of the final films ...
Xi Chen   +7 more
doaj   +1 more source

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