Arc voltage fluctuations in a nitrogen plasma torch

1997 ◽  
Vol 1 (2) ◽  
pp. 179-190 ◽  
Author(s):  
V. Lago ◽  
M. De Graaf ◽  
Michel A. Dudeck
Keyword(s):  
Plasma Torch ◽  
Nitrogen Plasma ◽  
Voltage Fluctuations ◽  
Arc Voltage

Arc voltage fluctuations: Comparison between two plasma torch types

2008 ◽  
Vol 202 (18) ◽  
pp. 4387-4393 ◽  
Author(s):  
E. Nogues ◽  
M. Vardelle ◽  
P. Fauchais ◽  
P. Granger
Keyword(s):  
Plasma Torch ◽  
Voltage Fluctuations ◽  
Arc Voltage

Cuprous Oxide Films Prepared by Using a Microwave Atmospheric Pressure Plasma Torch

2008 ◽  
Vol 47-50 ◽  
pp. 1015-1018 ◽  
Author(s):  
Hong Ying Chen ◽  
Lien Teng Kuo ◽  
Wan Yu Chang ◽  
Cheng Hsien Tsai
Keyword(s):  
Plasma Treatment ◽  
Cuprous Oxide ◽  
Atmospheric Pressure ◽  
Plasma Torch ◽  
Microwave Plasma ◽  
Cupric Oxide ◽  
Oxide Films ◽  
Atmospheric Pressure Plasma ◽  
Oxide Phase ◽  
Nitrogen Plasma

A 2.45 GHz microwave atmospheric pressure torch is employed to prepare cuprous oxide films. The sputtered copper films are firstly deposited on slide glass. After that, the films are annealed in air at 500°C for 12 h, which would directly oxidize into cupric oxide. The annealed films are then treated by atmospheric nitrogen plasma at 800 W for 10 min. The color changed significantly from black to reddish brown after nitrogen plasma treatment. The X-ray diffraction patterns show that annealed films are cupric oxide which is vanished after plasma treatment. The cuprous oxide films appeared after nitrogen plasma treatment. The resistivity of annealed films is 16.7 --cm, which reduce to 2.08 --cm after plasma treatment. The optical band gap of annealed films, cupric oxide phase, is 2.1 eV but the value shifts toward 2.4 eV after plasma treatment. The novel microwave plasma torch posses a fast and easy way to fabricate cuprous oxide films.

Large arc voltage fluctuations and droplet formation in electric arc wire spraying

2003 ◽  
Vol 46 (3) ◽  
pp. 229-235 ◽  
Author(s):  
A. P. Newbery ◽  
P. S. Grant
Keyword(s):  
Droplet Formation ◽  
Electric Arc ◽  
Voltage Fluctuations ◽  
Arc Voltage
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