The Effect of Pulse Plasma Treatment on the Corrosion Resistance of AISI 4140 Steel

2014 ◽  
pp. 19-25
Author(s):  
Gencer Ağdaş ◽  
A. Şükran Demirkıran ◽  
Yıldız Yaralı Özbek
Keyword(s):  
Corrosion Resistance ◽  
Plasma Treatment ◽  
Pulse Plasma ◽  
Aisi 4140 Steel ◽  
Aisi 4140

Enhancement of corrosion resistance for plasma nitrided AISI 4140 steel by plain air plasma post-oxidizing

2015 ◽  
Vol 632 ◽  
pp. 397-401 ◽  
Author(s):  
Jiqiang Wu ◽  
Han Liu ◽  
Xuemei Ye ◽  
Yating Chai ◽  
Jing Hu
Keyword(s):  
Corrosion Resistance ◽  
Air Plasma ◽  
Aisi 4140 Steel ◽  
Aisi 4140

Plasma surface treatment of AISI 4140 steel for improved corrosion resistance

1996 ◽  
Vol 31 (2) ◽  
pp. 431-435 ◽  
Author(s):  
F. G. Mittelstädt ◽  
C. V. Franco ◽  
J. Muzart ◽  
A. R. de Souza ◽  
L. P. Cardoso
Keyword(s):  
Corrosion Resistance ◽  
Surface Treatment ◽  
Aisi 4140 Steel ◽  
Plasma Surface ◽  
Plasma Surface Treatment ◽  
Aisi 4140

Tribological properties of plasma and pulse plasma nitrided AISI 4140 steel

1998 ◽  
Vol 108-109 ◽  
pp. 454-460 ◽  
Author(s):  
B Podgornik ◽  
J Vižintin ◽  
V Leskovšek
Keyword(s):  
Tribological Properties ◽  
Pulse Plasma ◽  
Aisi 4140 Steel ◽  
Aisi 4140

Effect of Nanocrystallization-Assisted Nitriding on the Corrosion Behavior of AISI 4140 Steel

2016 ◽  
Author(s):  
Zhencheng Ren ◽  
Xiaoning Hou ◽  
Yalin Dong ◽  
Chang Ye
Keyword(s):  
Corrosion Resistance ◽  
Processing Conditions ◽  
Nitrogen Diffusion ◽  
X Ray Diffraction ◽  
Aisi 4140 Steel ◽  
X Ray ◽  
Innovative Process ◽  
Micro Channels ◽  
Aisi 4140 ◽  
Scanning Electron

In this study, an innovative process called nanocrystallization-assisted nitriding was used to process 4140 steels. First, a nanocrystalline surface layer was induced in 4140 steel by ultrasonic nanocrystal surface modification (UNSM). The abundant nanoscale grain boundaries provide micro-channels for efficient nitrogen diffusion during nitriding at relatively low temperature (450 °C) and short duration (4 hours). The samples were characterized by X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. The hardness and corrosion resistance were examined and compared for samples after different processing conditions. It has been demonstrated that the sample processed by nanocrystallization-assisted nitriding has much higher hardness and corrosion resistance compared with the samples processed by nitriding only.

Wear Properties of Plasma Nitrided Steel in Dry Sliding Conditions

1999 ◽  
Vol 121 (4) ◽  
pp. 802-807 ◽  
Author(s):  
B. Podgornik ◽  
J. Vizˇintin
Keyword(s):  
Tribological Properties ◽  
Plasma Nitriding ◽  
Testing Machine ◽  
Compound Layer ◽  
Wear Testing ◽  
Pulse Plasma ◽  
Dry Sliding ◽  
Wear Properties ◽  
Aisi 4140 Steel ◽  
Aisi 4140

In our study, we investigated the wear, mechanical and tribological properties of plasma and pulse plasma nitrided AISI 4140 steel compared to hardened steel. Contact surfaces of the samples were fully characterized using metallographic, SEM microscopic, microhardness, and profilometric techniques, before and after wear testing. Wear tests were performed on a pin-on-disk wear testing machine in which nitrided pins were mated to hardened ball bearing steel disks under dry sliding conditions. Results show only slight improvement of the tribological properties of AISI 4140 steel after plasma and pulse plasma nitriding compared to hardening. However, improvements become more evident when testing conditions become more severe. It was also found that compound layer should be removed from the nitrided surface to avoid impairment of the tribological properties by fracture of hard and brittle compound layer followed by the formation of hard abrasive particles.

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