A novel method of surface modification for steel by plasma electrolysis carbonitriding

Shen, Dejiu; Wang, Yulin; Nash, Philip; Xing, Guangzhong

doi:10.1016/j.msea.2006.12.067

Cited by 73 publications

(28 citation statements)

References 7 publications

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“…Most studies are concentrated on the anodic process of plasma electrolysis in the past decades, such as the micro-arc oxidation (MAO) [4][5][6][7][8][9], and very few are on the cathodic process. However, in recent years, more and more researchers are paying attention to the study on the cathodic process of plasma electrolysis, for example, the plasma electrolytic nitriding/carburizing/boriding [10][11][12][13][14], surface cleaning [15][16][17] and coating [3], and they have made great progress. Cathode plasma electrolytic deposition (CPED) is an important part of plasma electrolysis.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and characterization of a novel cobalt coating prepared by cathode plasma electrolytic deposition

Quan

2015

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Microstructure and characterization of a novel cobalt coating prepared by cathode plasma electrolytic deposition

Quan

2015

Applied Surface Science

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“…In EIS test, the corrosion resistance of coated samples was increased up to 43 times rather than an untreated sample. Also, for potentiodynamic polarization tests, the corrosion current density for coated samples reached to the value of 1.2×10 -6 A/cm 2 4. An increase in frequency from 500 Hz to 10000 Hz, not only reduced the size of nanocrystallite to about half its value (from 77 nm to 42 nm) but also improved the corrosion resistance of the substrate (from 16403 Ω.cm 2 to 39353 Ω.cm 2 ).…”

Section: Resultsmentioning

confidence: 92%

“…However, lower corrosion and wear resistance of steels in comparison with some materials like ceramics causes their usage to be limited. Therefore, different coating processes were used to overcome these problems [2]. Plasma electrolytic is a relatively new process which improves mechanical and chemical properties of metals and alloys.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Nitrocarburized Coating by Plasma Electrolytic Saturation

Noori¹,

Dehghanian²

2018

Acta Metall. Slovaca

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Plasma electrolytic saturation (PES) is an atmospheric pressure plasma deposition which is used for fabrication of nanostructural coatings. This process starts with the appearance of some sparks on the surface and finally by the formation of plasma envelope around the sample, particles and free radicals bombard the surface and diffusion takes place into the work-piece. In this paper, the effect of frequency (500, 1000 and 10000 Hz) as pulse parameters on properties of nitrocarburized layers deposited on AISI 1045 steel were investigated. The analytical characteristics of the coating were assessed using X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The corrosion behavior of coatings was analyzed by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in 3.5% sodium chloride solution. Moreover, the microhardness and wear resistance of coated samples were also studied. The results indicated that applying nitrocarburized layer in all cases, improved the corrosion resistance, microhardness and also wear resistance of the substrate. The coatings treated at the frequency of 10000 Hz, had corrosion resistance about 2.4 and 1.4 times higher than those of the samples prepared at the frequency of 500 Hz and 1000 Hz. The surface hardness of 10000 Hz treated sample was about 1040 Vickers, which was more than those of the two other ones. An increase in frequency also caused wear resistance to increase.

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“…However, such processes [2] often add significant cost to the manufacturing processes. There is, therefore, an interest in exploring alternative cost effective approaches to the surface modification of engineering components, which are often produced from steels [3].…”

Section: Introductionmentioning

confidence: 99%