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

Author

Ichiki, Ryuta ; Inoue, Takeru ; Yoshimitsu, Yuki ; Yamamoto, Hiroshi ; Kanda, S. ; Yoshida, Manabu ; Akamine, Shuichi ; Kanazawa, S.

Author_Institution

Dept. of Electr. & Electron. Eng., Oita Univ., Oita, Japan

Volume

42

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

2466

Lastpage

2467

Abstract

Irradiating the plume of atmospheric-pressure pulsed-arc plasma jet with nitrogen/hydrogen mixture gas enables to harden steel surface by nitrogen diffusion into steel. An important parameter is the hydrogen mixture ratio. Images of plasma-jet plume and formed hard layer for several hydrogen mixture ratios are presented.

Keywords

gas mixtures; plasma jets; plasma materials processing; steel; surface diffusion; surface hardening; atmospheric-pressure plasma jet nitriding; atmospheric-pressure pulsed-arc plasma jet; hard layer formation; harden steel surface; irradiation effect; nitrogen diffusion; nitrogen-hydrogen mixture gas; plasma-jet plume; plume brightness; pressure 1 atm; Atmospheric-pressure plasmas; Brightness; Electrodes; Steel; Surface discharges; Surface treatment; Nitriding; pulsed-arc plasma jet; surface hardening; surface hardening.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2014.2311152

Filename

6779621