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

@article{Ichiki2014PeculiarRO,
  title={Peculiar Relationship of Plume Brightness and Hard Layer Formation in Atmospheric-Pressure Plasma Jet Nitriding},
  author={Ryuta Ichiki and Takashi Inoue and Yuki Yoshimitsu and Hirofumi Yamamoto and Shogo Kanda and Masashi Yoshida and Shuichi Akamine and Seiji Kanazawa},
  journal={IEEE Transactions on Plasma Science},
  year={2014},
  volume={42},
  pages={2466-2467}
}
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.