N2/H2 Non-thermal Transferred arc Plasma Nitriding Treatment of Stainless Steel at Atmospheric Pressure

2020 ◽  
Vol 40 (6) ◽  
pp. 1525-1537
Author(s):  
Q. J. Guo ◽  
Y. J. Zhao ◽  
G. H. Ni ◽  
L. Li ◽  
Q. F. Lin ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Atmospheric Pressure ◽  
Plasma Nitriding ◽  
Arc Plasma ◽  
Transferred Arc

Stability and structures in atmospheric pressure DC non-transferred arc plasma jets of argon, nitrogen, and air

2018 ◽  
Vol 25 (7) ◽  
pp. 072103 ◽  
Author(s):  
N. Tiwari ◽  
S. Bhandari ◽  
S. Ghorui
Keyword(s):  
Atmospheric Pressure ◽  
Plasma Jets ◽  
Arc Plasma ◽  
Transferred Arc

Effects of Plasma Nitriding on the Erosion Behavior of AISI 403 Stainless Steel Solid State Particles

2014 ◽  
Vol 52 (8) ◽  
pp. 581-588 ◽  
Author(s):  
Kyeong Ho Baik ◽  
Ji Won Seo ◽  
Hee Jin Park ◽  
In Soo Kim ◽  
Byung Il Yang
Keyword(s):  
Stainless Steel ◽  
Solid State ◽  
Plasma Nitriding ◽  
Erosion Behavior

Synthesis of ultrafine silicon carbide nanoparticles using non‐thermal arc plasma at atmospheric pressure

2021 ◽  
Author(s):  
Cheng Wang ◽  
Jiawen Zhou ◽  
Ming Song ◽  
Zhongshan Lu ◽  
Xianhui Chen ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Atmospheric Pressure ◽  
Arc Plasma ◽  
Silicon Carbide Nanoparticles

Microstructure and micro-abrasive wear of sintered yttria-containing 316L stainless steel treated by plasma nitriding

2019 ◽  
Vol 374 ◽  
pp. 700-712 ◽  
Author(s):  
Michell F.C. Ordoñez ◽  
Cintia L.G. Amorim ◽  
Israel Krindges ◽  
Cesar Aguzzoli ◽  
Israel J.R. Baumvol ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Abrasive Wear ◽  
316L Stainless Steel ◽  
Plasma Nitriding

Predictions of Current Attachment at Thermionic Cathode for TIG Arcs

2008 ◽  
Vol 580-582 ◽  
pp. 319-322 ◽  
Author(s):  
Manabu Tanaka ◽  
Kentaro Yamamoto ◽  
Tashiro Shinichi ◽  
John J. Lowke
Keyword(s):  
Melting Point ◽  
Work Function ◽  
Atmospheric Pressure ◽  
The Other ◽  
Numerical Calculations ◽  
Maximum Temperature ◽  
Arc Plasma ◽  
Melting Points ◽  
Thermionic Cathode ◽  
Uniform Current

Study of current attachment at thermionic cathode for TIG arc at atmospheric pressure is attempted from numerical calculations of arc-electrodes unified model. The calculations show that the maximum temperature of arc plasma close to the cathode tip for W-2% ThO2 reaches 19,000 K and it is the highest value in comparison with the other temperatures for W-2% La2O3 and W-2% CeO2, because the current attachment at the cathode tip is constricted by a centralized limitation of liquid area of ThO2 due to its higher melting point. The calculations also show that, in cases of W- 2% La2O3 and W-2% CeO2, the liquid areas of La2O3 and Ce2O3 are widely expanded at the cathode tip due to their lower melting points and then produce uniform current attachments at the cathode. It is concluded that the current attachment at thermionic cathode is strongly dependent on work function, melting point and Richardson constant of emitter materials.

Effect of RF plasma nitriding time on microhardness and corrosion resistance of 304 stainless steel

1992 ◽  
Vol 59 (3-4) ◽  
pp. 253-260 ◽  
Author(s):  
M.M. Ibrahim ◽  
F.M. El-Hossary ◽  
N.Z. Negm ◽  
M. Abed ◽  
R.E. Ricker
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Plasma Nitriding ◽  
304 Stainless Steel ◽  
Rf Plasma ◽  
Nitriding Time

Nitriding of yttria-stabilized zirconia in atmospheric pressure microwave plasma

2009 ◽  
Vol 24 (6) ◽  
pp. 2021-2028 ◽  
Author(s):  
R. Milani ◽  
R.P. Cardoso ◽  
T. Belmonte ◽  
C.A. Figueroa ◽  
C.A. Perottoni ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Atmospheric Pressure ◽  
Microwave Plasma ◽  
Plasma Nitriding ◽  
Nitrided Layer ◽  
Zirconium Nitride ◽  
Stabilized Zirconia ◽  
Partially Stabilized Zirconia ◽  
X Ray ◽  
Yttria Partially Stabilized Zirconia

High temperature plasma nitriding of yttria-partially-stabilized zirconia in atmospheric pressure microwave plasma was investigated. The morphological, mechanical, and physicochemical characteristics of the resulting nitrided layer were characterized by different methods, such as optical and scanning electron microscopy, microindentation, x-ray diffraction, narrow resonant nuclear reaction profiling, secondary neutral mass spectrometry, and x-ray photoelectron spectroscopy, aiming at investigating the applicability of this highly efficient process for nitriding of ceramics. The structure of the plasma nitrided layer was found to be complex, composed of tetragonal and cubic zirconia, as well as zirconium nitride and oxynitride. The growth rate of the nitrided layer, 4 µm/min, is much higher than that obtained by any other previous nitriding process, whereas a typical 50% increase in Vickers hardness over that of yttria-partially-stabilized zirconia was observed.

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