Steel nitriding by atmospheric-pressure plasma jet using N2/H2 mixture gas

Nagamatsu, H.; Ichiki, Ryuta; Yasumatsu, Y.; Inoue, Takashi; Yoshida, Minoru; Akamine, Shuichi; Kanazawa, Susumu

doi:10.1016/j.surfcoat.2013.03.012

Cited by 46 publications

(39 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 9 shows that only the emission of the N 2 second positive system and Ar appear. N 2 first positive system (550-800 nm) and NH radical (336.1 nm) reported in previous study [4] are not detected. Moreover, the spectra peak of positive ions (N 2 + , N + etc.)…”

Section: Experimental Methods and Conditionscontrasting

confidence: 49%

See 1 more Smart Citation

Surface Modification of Tool Steel by Atmospheric-Pressure Plasma Nitriding Using Dielectric Barrier Discharge

et al. 2016

View full text Add to dashboard Cite

The plasma nitriding of tool steel under atmospheric-pressure was performed using a dielectric barrier discharge method, resulting in the formation of a uniform nitrided layer. In this study, the tribology properties of the nitrided layer generated by atmospheric-pressure plasma nitriding were investigated. The results showed that the surface hardness of the tool steel nitrided by the atmospheric-pressure plasma method were increased by more than twofold compared with that of the core material. The surface hardness and the thickness of the nitrided layer were uniform, with values of 1300 HV and 30 m, respectively. In addition, the wear rate of the sample nitrided by the atmospheric-pressure plasma method was decreased by more than 25 times compared with that of the untreated sample. Only the emission of the N 2 second positive system and Ar were detected by the optical emission spectroscopic observation of the generated plasma. For this reason, we consider that the nitriding of this research caused by the dissociation of nonexcited N 2 , NH 3 , NH 2 , and NH etc. on the sample like a gas nitriding.

show abstract

Section: Experimental Methods and Conditionscontrasting

confidence: 49%

“…However, glow discharge plasma nitriding requires a vacuum system to generate plasma under vacuum. Therefore, most traditional plasma nitriding can be performed only as a batch process and capital costs become very high [4]. For this reason, we are developing a new plasma nitriding method that is conducted under atmospheric pressure.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Tool Steel by Atmospheric-Pressure Plasma Nitriding Using Dielectric Barrier Discharge

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Second, the PA discharge can produce higher density reactive species than dielectric barrier discharges. Up to now, we have demonstrated that local nitriding is feasible by irradiating the PA plasma jet plume onto a steel surface, provided that H 2 gas is added to the operating N 2 gas [3], [4]. Here, we present effects of H 2 addition on the appearance of jet plume and the thickness of formed hard layer.…”

mentioning

confidence: 87%

Peculiar Relationship of Plume Brightness and Hard Layer Formation in Atmospheric-Pressure Plasma Jet Nitriding

Ichiki

Inoue

Yoshimitsu

et al. 2014

IEEE Trans. Plasma Sci.

View full text Add to dashboard Cite

show abstract

“…The flow measured by displacement with grade five high purity nitrogen is 3.6 ℎ ⁄ . The quality of nitriding depends on the flow rate of hydrogen, which has an optimum value [7].…”

Section: Nitriding Of Test Piecesmentioning

confidence: 99%

Effect of surface roughness on nitriding processes by dielectric barrier discharges of carbon steel

Quiñonez-Delgado

Dulce-Moreno

Peña-Rodríguez

et al. 2017

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Abstract. Changes in the behaviour of steels to carbon, for three different finishes, surfaces were determined to be nitride by atmospheric pressure dielectric barrier discharge. The surfaces were characterized both morphologically and structurally before and after the treatment. The techniques used were: measurement of roughness and electrochemical testing (Tafel). Results show changes differential depending on the type of finish, but in any case, an improvement of corrosion resistance.

show abstract

Steel nitriding by atmospheric-pressure plasma jet using N2/H2 mixture gas

Cited by 46 publications

References 56 publications

Surface Modification of Tool Steel by Atmospheric-Pressure Plasma Nitriding Using Dielectric Barrier Discharge

Surface Modification of Tool Steel by Atmospheric-Pressure Plasma Nitriding Using Dielectric Barrier Discharge

Peculiar Relationship of Plume Brightness and Hard Layer Formation in Atmospheric-Pressure Plasma Jet Nitriding

Effect of surface roughness on nitriding processes by dielectric barrier discharges of carbon steel

Contact Info

Product

Resources

About