scholarly journals Production of nanopowder of cerium (III) fluoride obtained by pulsed electron beam evaporation in vacuum

2021 ◽  
Vol 2064 (1) ◽  
pp. 012085
Author(s):  
V G Ilves ◽  
S Y Sokovnin ◽  
M A Uimin
Keyword(s):  
Drug Delivery ◽  
Magnetic Susceptibility ◽  
Electron Beam ◽  
Evaporation Rate ◽  
Coherent Scattering ◽  
Coherent Scattering Region ◽  
Electron Beam Evaporation ◽  
High Specific Surface Area ◽  
Pulsed Electron Beam ◽  
Large Pore Volume

Abstract The method of pulsed electron beam evaporation in vacuum was first used to obtain CeF3 nanopowder (NP). During NP production, a high evaporation rate of the target (~ 7 g/h) and a higher percentage of NP collection (> 72%) were observed, both for fluoride and the previously obtained CeO2 oxide. It was found that the produced NP contains two crystalline phases: hexagonal CeF3 (95 wt.%, coherent scattering region ≈ 8 nm and [Ce-O-F] or [Ce-F]. The magnetic susceptibility of CeF3 nanoparticles (NPles) coincides with the susceptibility of micron particles, indicating the potential for using such NPles as a contrast agent for tomography. High specific surface area (CeO2-270 m2/g, CeF3 – 62 m2/g), large pore volume (0.35-0.11 cm3/g) allow the use of NPles as nanocontainers for drug delivery.

scholarly journals Effect of iron doping on the properties of nanopowders and coatings on the basis of Al2O3 produced by pulsed electron beam evaporation

2013 ◽  
Vol 8 (7-8) ◽  
pp. 466-481 ◽  
Author(s):  
S. Yu. Sokovnin ◽  
V. G. Il’ves ◽  
A. I. Surdo ◽  
I. I. Mil’man ◽  
M. I. Vlasov
Keyword(s):  
Electron Beam ◽  
Electron Beam Evaporation ◽  
Iron Doping ◽  
Pulsed Electron Beam

scholarly journals Production of nanopowders of bismuth oxide doped with silver by pulsed electron beam evaporation in vacuum

2021 ◽  
Vol 2064 (1) ◽  
pp. 012106
Author(s):  
V G Ilves ◽  
S Y Sokovnin ◽  
M A Uimin
Keyword(s):  
Electron Beam ◽  
Bismuth Oxide ◽  
Solid Phase ◽  
Electron Beam Evaporation ◽  
Visible Range ◽  
Phase Synthesis ◽  
Pulsed Electron Beam ◽  
Long Term Storage ◽  
Environmentally Friendly Method

Abstract Various bismuth containing compounds are promising in many applications, including for creating photocatalysts based on them using a visible range of light. However, strong polymorphism (9 polymophic phases of Bi2O3), thermal instability and changes in the properties of bismuth oxide during long-term storage significantly complicate work with it. One way to increase stability and improve photocatalytic properties is by doping Bi2O3 with various metals. Ag doped Bi2O3 nanoparticles (NPs) are typically produced using chemical techniques often associated with the presence of toxic chemicals. The present paper used an environmentally friendly method of producing NPs using the method of pulsed electron beam evaporation in vacuum. The evaporation target was obtained by solid phase synthesis in an electric furnace on air using silver nitrate additives (1 and 5 wt.%). Textural, thermal and magnetic properties of the obtained NPs have been studied. Was found that the Ag-Bi2O3 NPs have a specific surface area (SSA) of 23.7 m2/g, which was almost 2 times bigger than the SSA of the pure Bi2O3 (13.2 m2/g) obtained previously. The thermal stability of the Ag-doped Bi2O3 samples was maintained to the temperature 350°C. While further heating on air took place the phase transition β → α

Evaporation rate distribution during electron beam evaporation

1993 ◽  
Vol 4 (10) ◽  
pp. 1050-1051 ◽  
Author(s):  
C Tenchov ◽  
D S Simeonova ◽  
V A Mitev ◽  
N Donkov
Keyword(s):  
Electron Beam ◽  
Evaporation Rate ◽  
Electron Beam Evaporation ◽  
Rate Distribution
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