Title :
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
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.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2014.2311152
