Synthesis of Single-Phase Gd-Doped Ceria Nanopowders by Radio Frequency Thermal Plasma Treatment

2014 ◽  
Vol 97 (5) ◽  
pp. 1379-1382 ◽  
Author(s):  
Mi-Yeon Lee ◽  
Min-Kyung Song ◽  
Jeong-Soo Kim ◽  
Jun-Ho Seo ◽  
Min-Ho Kim
Keyword(s):  
Radio Frequency ◽  
Plasma Treatment ◽  
Thermal Plasma ◽  
Single Phase ◽  
Doped Ceria

Radio Frequency Thermal Plasma Treatment for Size Reduction and Spheroidization of Glass Powders Used in Ceramic Electronic Devices

2007 ◽  
Vol 90 (6) ◽  
pp. 1717-1722 ◽  
Author(s):  
Jun Ho Seo ◽  
Dong Uk Kim ◽  
Jun Seok Nam ◽  
Sang Hee Hong ◽  
Sung Bum Sohn ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Plasma Treatment ◽  
Thermal Plasma ◽  
Electronic Devices ◽  
Size Reduction ◽  
Glass Powders

scholarly journals Facile Synthesis of Single-Phase Alpha-Tungsten Nanopowders from Ammonium Paratungstate by RF Induction Thermal Plasma and Thermochemical Reduction

2020 ◽  
Vol 58 (11) ◽  
pp. 798-807
Author(s):  
Dongyoon Shin ◽  
Hyun-Woo Shim ◽  
Basudev Swain ◽  
Kyung-Soo Park ◽  
Chan-Gi Lee
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Plasma Treatment ◽  
Thermal Plasma ◽  
Single Phase ◽  
Morphological Evolution ◽  
Synthesis Conditions ◽  
Ammonium Paratungstate ◽  
Induction Thermal Plasma ◽  
Thermochemical Reduction

Facile, economic methods of preparing tungsten (W) nanopowder are critically needed to meet industrial demand. Herein, we report a method of preparing single-phase alpha-W (α-W) nanopowders using ammonium paratungstate (APT) as a starting material and the optimum synthesis conditions. The process involves two stages: i) the radio-frequency (RF) induction thermal plasma treatment of APT, followed by ii) thermochemical reduction at 600-900 <sup>o</sup>C. The crystallographic phase and morphological evolution of all products were systematically investigated using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM), and the effects of the annealing temperature on the phase and particle size of the obtained powders were also evaluated. When the RF induction thermal plasma treatment was conducted with and without H<sub>2</sub>, the XRD and FESEM results showed the formation of mixed-phase α- and beta-W (β-W) nanopowder and WO<sub>3</sub> nanopowder, respectively. Single-phase α-W nanopowder was achieved by annealing the WO<sub>3</sub> nanopowder in an H<sub>2</sub> reductive atmosphere at 700 <sup>o</sup>C for 10 min, resulting in homogenous nanoparticles with a small particle size (d50) of 21.16 nm without any aggregation.

THE MODIFICATION OF PAPER INDUCED BY RADIO FREQUENCY AND MICROWAVE PLASMA TREATMENT

2007 ◽  
Vol 11 (4) ◽  
pp. 593-600
Author(s):  
V. V. Azharonok ◽  
I. I. Filatova ◽  
A. P. Dostanko ◽  
S. V. Bordusov ◽  
Yu. S. Shynkevich
Keyword(s):  
Radio Frequency ◽  
Plasma Treatment ◽  
Microwave Plasma

scholarly journals Effects of a Non Thermal Plasma Treatment Alone or in Combination with Gemcitabine in a MIA PaCa2-luc Orthotopic Pancreatic Carcinoma Model

PLoS ONE ◽  
2012 ◽  
Vol 7 (12) ◽  
pp. e52653 ◽  
Author(s):  
Laura Brullé ◽  
Marc Vandamme ◽  
Delphine Riès ◽  
Eric Martel ◽  
Eric Robert ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Pancreatic Carcinoma ◽  
Thermal Plasma ◽  
Non Thermal Plasma

scholarly journals About a possibility of increasing the adhesion strength between mineral glass and polymeric binder under radio-frequency induction plasma treatment

2017 ◽  
Vol 789 ◽  
pp. 012033
Author(s):  
I S Miftakhov ◽  
A V Trofimov ◽  
A I Nagmutdinova ◽  
E F Voznesensky ◽  
F S Sharifullin ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Plasma Treatment ◽  
Adhesion Strength ◽  
Polymeric Binder ◽  
Induction Plasma

The Impact Evaluation of Factors on the Adhesion of Modified Polytetrafluoroethylene Films in a Glow Discharge Non-Thermal Plasma

2020 ◽  
Vol 992 ◽  
pp. 658-662
Author(s):  
M.A. Mokeev ◽  
L.A. Urkhanova ◽  
A.N. Khagleev ◽  
Denis B. Solovev
Keyword(s):  
Glow Discharge ◽  
Plasma Treatment ◽  
Thermal Plasma ◽  
Graphical Model ◽  
Polymer Surface ◽  
Practical Method ◽  
Wetting Angle ◽  
Regression Equations ◽  
Non Thermal Plasma ◽  
The Impact

Mechanical, chemical and plasma treatment are the main kind of treatment of polytetrafluoroethylene (PTFE) films. Each method is different from each other by the adhesive force: the value of the wetting angle. Mechanical treatment allows different particles to permeate into the structure of the polymer. Chemical treatment creates new functional groups on the polymer surface, but this method is toxic and dangerous. Plasma treatment, in a glow discharge non-thermal plasma, is a more ecological and practical method. The experiment showed that the plasma treatment successfully increases the adhesion, this has been proven by infrared spectroscopy and scanning electron microscopy. According to the obtained data of the wetting angle, the regression equation was derived. A graphical model is constructed by regression equations allows you to determine the main processing factor and choose the optimal values of treatment.

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