Effect of DC-Plasma Arc Behavior on Growth of Diamond Film

2006 ◽  
pp. 385-390
Author(s):  
Duo Sheng Li ◽  
Dun Wen Zuo ◽  
Rong Fa Chen ◽  
Bing Kun Xiang ◽  
Li Gang Zhao
Keyword(s):  
Diamond Film ◽  
Plasma Arc ◽  
Dc Plasma ◽  
Arc Behavior

Effect of DC-Plasma Arc Behavior on Growth of Diamond Film

2006 ◽  
Vol 315-316 ◽  
pp. 385-390 ◽  
Author(s):  
Duo Sheng Li ◽  
Dun Wen Zuo ◽  
Rong Fa Chen ◽  
Bing Kun Xiang ◽  
Li Gang Zhao
Keyword(s):  
Carbon Source ◽  
Plasma Density ◽  
Diamond Film ◽  
Plasma Arc ◽  
Key Factors ◽  
Dc Plasma ◽  
Arc Behavior ◽  
Long Time ◽  
Sediment Carbon

DC-Plasma arc behavior is one of the key factors on growth of diamond film. The results show that keeping steady DC-Plasma arc can grow better quality diamond film. In a long-time growth of diamond film, there is sediment carbon on about 5mm border-entad anode annulus, which was proved to be graphite. It results in fluctuating and instability of DC-Plasma arc and in the DC-Plasma density, which causes graphite generation and much stress in the film. By means of adjusting anode annulus assembly, pausing the supply of carbon source and increasing H2, the problem of sediment carbon cab be effectively resolved. Finally, the mechanism of the effect of arc behavior on growth of diamond film is discussed.

scholarly journals COMPARISON OF RESULTS OBTAINED FROM TEMPERATURE MEASUREMENT AND NUMERICAL SIMULATION OF DC PLASMA ARC

1999 ◽  
Vol 48 (9) ◽  
pp. 1691
Author(s):  
SHAO QI-YUN ◽  
HE YU ◽  
GUO WEN-KANG ◽  
XU PING ◽  
ZANG DE-HONG
Keyword(s):  
Numerical Simulation ◽  
Temperature Measurement ◽  
Plasma Arc ◽  
Dc Plasma ◽  
Comparison Of Results

The effect of potassium addition on plasma parameters in argon dc plasma arc

2010 ◽  
Vol 43 (33) ◽  
pp. 335202 ◽  
Author(s):  
D Ranković ◽  
M Kuzmanović ◽  
J Savović ◽  
M S Pavlović ◽  
M Stoiljković ◽  
...  
Keyword(s):  
Plasma Arc ◽  
Plasma Parameters ◽  
Dc Plasma ◽  
Potassium Addition

Characterization of Diamond Spherical Shell Thick Film by DC Plasma CVD

2008 ◽  
Vol 375-376 ◽  
pp. 216-220 ◽  
Author(s):  
Duo Sheng Li ◽  
Dun Wen Zuo ◽  
Yu Li Sun ◽  
Rong Fa Chen ◽  
Wen Zhuang Lu ◽  
...  
Keyword(s):  
Spherical Shell ◽  
Thick Film ◽  
Diamond Film ◽  
Substrate Surface ◽  
Film Surface ◽  
Growth Surface ◽  
Dc Plasma ◽  
Force Microscopy ◽  
Microstructure Morphology

Diamond spherical shell thick film was prepared by high power DC-plasma jet CVD. Atom force microscopy, scanning electron microscopy, Raman spectroscopy and roughness-profile-meter were used to characterize microstructure, morphology, impurities and orientation evolution of diamond spherical shell thick film. The results show that, when nucleation begins, grains grow random orientation. The grain size of spherical diamond film prepared is compact, clear, uniform, continuous and no remarkable bigger grain over the whole surface of film. On the growth surface, (100) facets were dominant, and the cross-section SEM indicated that film columnar spreading grew from the substrate surface to the diamond film surface. The roughness of the growth surface was much more than that of the nucleation surface. To adjust some important parameters as methane concentrate, depositing time, and matrix temperature, and high quality diamond spherical shell thick film was deposited.

Arc characteristics in small-scale DC plasma arc furnaces using graphite cathodes

1990 ◽  
Vol 10 (2) ◽  
pp. 359-373 ◽  
Author(s):  
R. Knight ◽  
M. J. Murawa ◽  
N. M. Girgis ◽  
K. J. Reide
Keyword(s):  
Small Scale ◽  
Plasma Arc ◽  
Dc Plasma ◽  
Arc Furnaces ◽  
Arc Characteristics

scholarly journals Investigation of the Arc-Anode Attachment Area by Utilizing a High-Speed Camera

2016 ◽  
Vol 3 (1) ◽  
pp. 1-4 ◽  
Author(s):  
P. Ondac ◽  
A. Maslani ◽  
M. Hrabovsky
Keyword(s):  
Flow Structure ◽  
Power Distribution ◽  
High Speed ◽  
Average Velocity ◽  
Anode Voltage ◽  
Plasma Jet ◽  
High Speed Camera ◽  
Plasma Arc ◽  
Hydrodynamic Waves ◽  
Dc Plasma

The arc-anode attachment in the DC plasma arc influences power distribution in the plasma, a lifespan of anode and flow structure of plasma jet. A movement of the attachment and the surrounding plasma was directly observed by using a high-speed camera (max. 1,080,000 fps). The observations were compared with cathode-anode voltage measurements (sample rate 80 MHz). We have directly measured the average velocity of the attachments and hydrodynamic waves above them, as well as the characteristic dwell times and dwell frequencies of the attachments.

scholarly journals Comparison of Copper and Graphite Crucibles for Si Extraction from TiO2 - SiO2 System at Plasma-Arc Heating

2018 ◽  
Vol 5 (3) ◽  
pp. 128-130
Author(s):  
D. E. Kirpichev ◽  
A. A. Nikolaev ◽  
A. V. Nikolaev
Keyword(s):  
Temperature Field ◽  
Graphite Crucible ◽  
Arc Furnace ◽  
Plasma Arc ◽  
Dc Plasma ◽  
Sio2 System ◽  
Anode Spot ◽  
Arc Heating ◽  
Material Temperature ◽  
Made In

<p>Plasma arc recovery melting of the quartz-leucoxene concentrate is investigated. Experiments were made in laboratory DC plasma arc furnace in various crucibles. The best results are reached in a cold copper crucible. The temperature field of a pool is calculated in hot graphite and cold copper crucibles. It is shown that in a graphite crucible diameter of an anode spot is more, and density of current and material temperature in a spot is less, than in copper that is the reason of the worst refinements in a graphite crucible.</p>

Active electronic devices fabricated by DC plasma arc spray process

Vacuum ◽  
2000 ◽  
Vol 59 (1) ◽  
pp. 179-184 ◽  
Author(s):  
H.C. Dickey ◽  
T.T. Meek
Keyword(s):  
Electronic Devices ◽  
Plasma Arc ◽  
Dc Plasma ◽  
Spray Process ◽  
Arc Spray
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