Surface modification and wear test of carbon steel by plasma electrolytic nitrocarburizing

2011 ◽  
Vol 44 (3) ◽  
pp. 342-351 ◽  
Author(s):  
Ahmad Reza Rastkar ◽  
Babak Shokri
Keyword(s):  
Surface Modification ◽  
Carbon Steel ◽  
Wear Test ◽  
Plasma Electrolytic ◽  
Plasma Electrolytic Nitrocarburizing

Anodic Plasma Electrolytic Nitrocarburizing of Low-Carbon Steel

2013 ◽  
Vol 704 ◽  
pp. 31-36 ◽  
Author(s):  
Pavel N. Belkin ◽  
Sergei A. Kusmanov ◽  
Alexander Naumov ◽  
Yulia Parkaeva
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Treatment Temperature ◽  
Electrolyte Composition ◽  
Low Carbon ◽  
Surface Layers ◽  
Treatment Conditions ◽  
Plasma Nitrocarburizing ◽  
Plasma Electrolytic ◽  
Plasma Electrolytic Nitrocarburizing

Alternating surface oxide and hardened layers were fabricated by means of anodic plasma nitrocarburizing of low-carbon steel in aqueous ammonium chloride/carbamide solutions. The effect of electrolyte composition and treatment conditions on the phase characteristics, structure and properties of the surface layers was studied. The distributions of hardness, phase and structure composition of the surface layers were defined. Controllability of diffusion saturation with nitrogen and carbon by variation of electrolyte composition and treatment temperature was shown. The formation of nitrogen and carbon, which are diffusing into the steel surface at anodic plasma electrolytic nitrocarburizing was described.

scholarly journals Cathodic boriding and anodic polishing of medium-carbon steel by plasma electrolysis

2021 ◽  
Vol 2144 (1) ◽  
pp. 012027
Author(s):  
S S Korableva ◽  
I R Palenov ◽  
I M Naumov ◽  
A A Smirnov ◽  
I A Kusmanova ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Carbon Steel ◽  
Sulfate Solution ◽  
Medium Carbon Steel ◽  
Operating Voltage ◽  
Medium Carbon ◽  
Plasma Electrolysis ◽  
Electrolytic Polishing ◽  
Cathodic Plasma ◽  
Plasma Electrolytic

Abstract The possibility of cathodic plasma electrolytic boriding of medium-carbon steel in an aqueous solution of ammonium chloride and boric acid followed by anodic plasma electrolytic polishing in an ammonium sulfate solution on the same equipment with a change in the operating voltage is shown. The morphology and roughness of the surface, microhardness of the modified layer have been investigated. Wear resistance was studied under dry friction conditions. It has been established that cathodic boriding at 850 °C for 5–30 min leads to the hardening of the surface layer up to 1050 HV with an increase in roughness by 1.5–2.5 times and wear resistance by 3.5 times. Subsequent anodic plasma electrolytic polishing of the boriding surface leads to a decrease in roughness with an increase in wear resistance by 2.3 times.

Influence of discharge time on properties of plasma electrolytic borocarburized layers on Q235 low-carbon steel

2015 ◽  
Vol 168 ◽  
pp. 10-17 ◽  
Author(s):  
Bin Wang ◽  
Wenbin Xue ◽  
Zhenglong Wu ◽  
Xiaoyue Jin ◽  
Jie Wu ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Discharge Time ◽  
Plasma Electrolytic

Surface modification of valve metals using plasma electrolytic oxidation for antibacterial applications: A review

2017 ◽  
Vol 106 (2) ◽  
pp. 590-605 ◽  
Author(s):  
Muhammad Rizwan ◽  
Rodianah Alias ◽  
Umi Zhalilah Zaidi ◽  
Reza Mahmoodian ◽  
Mohd Hamdi
Keyword(s):  
Surface Modification ◽  
Plasma Electrolytic Oxidation ◽  
Electrolytic Oxidation ◽  
Valve Metals ◽  
Plasma Electrolytic

Surface modification of graphene-coated carbon steel using aromatic molecules for enhancing corrosion resistance; comparison between type of aryl substitution with different spatial situations

2018 ◽  
Vol 65 (3) ◽  
pp. 249-262 ◽  
Author(s):  
Zahra Shams Ghahfarokhi ◽  
Mojtaba Bagherzadeh ◽  
Ebrahim Ghiamati Yazdi ◽  
Abbas Teimouri
Keyword(s):  
Surface Modification ◽  
Carbon Steel ◽  
Corrosion Protection ◽  
Protection Efficiency ◽  
Graphene Surface ◽  
Content Type ◽  
X Ray ◽  
Aromatic Molecules ◽  
Proposed Modification ◽  
Coated Carbon

Purpose The purpose of this paper is study of the type of functional group and its situation on phenyl molecule, in increasing the corrosion protection of modified graphene layers by it. Corrosion protection efficiency of graphene was raised via modifying the surface of graphene-coated carbon steel (CS/G) by using aromatic molecules. Phenyl groups with three different substitutions including COOH, NO2 and CH3 grafted to graphene via diazonium salt formation route, by using carboxy phenyl, nitro phenyl and methyl phenyl diazonium salts in ortho, meta and para spatial situations. Design/methodology/approach Molecular bindings were characterized by using X-ray diffractometer, fourier-transform infrared spectroscopy (FTIR), Raman and scanning electron microscopy (SEM)/ energy dispersive X-ray analysis (EDXA) methods. Anti-corrosion performance of modified CS/G electrodes was evaluated by weight loss and electrochemical techniques, potentiodynamic polarization (Tafel) and electrochemical impedance spectroscopy, in 3.5 per cent NaCl solution. Findings The obtained results confirmed covalently bonding of phenyl groups to the graphene surface. Also, the observed results showed that substitution spatial situations on phenyl groups can affect charge transfer resistance (Rct), corrosion potential (Ecorr), corrosion current density (jcorr) and the slope of the anodic and cathodic reaction (ßa,c), demonstrating that the proposed modification method can hinder the corrosion reactions. The proposed modification led to restoring the graphene surface defects and consequently increasing its corrosion protection efficiency. Originality/value The obtained results from electrochemical methods proved that protection efficiency was observed in order COOH < NO2 < CH3 and MPD in the para spatial situation and showed the maximum protection efficiency of 98.6 per cent in comparison to other substitutions. Finally, the ability of proposed graphene surface modification route was further proofed by using surface methods, i.e. SEM and EDXA, and contact angles measurements.

High temperature tribological behaviors of plasma electrolytic borocarburized Q235 low-carbon steel

2013 ◽  
Vol 232 ◽  
pp. 142-149 ◽  
Author(s):  
Bin Wang ◽  
Xiaoyue Jin ◽  
Wenbin Xue ◽  
Zhenglong Wu ◽  
Jiancheng Du ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Tribological Behaviors ◽  
Plasma Electrolytic
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