In situ photoemission electron spectroscopy study of nitrogen ion implanted AISI-H13 steel

Luiz Fernando Zagonel (1) , C. A. Figueroa (2) , F. Alvarez , F. Zagonel (3)

1 LPS - Laboratoire de Physique des Solides
2 CCET, Universidade de Caxias do Sul,
3 IFGW - Instituto de Fisica 'Gleb Wataghin'

In this paper we report the effect of hydrogen on the structural properties of AISI-H13 steel nitrogen-implanted samples in low oxygen partial pressure atmosphere. The samples were implanted in a high vacuum chamber by using a broad ion beam source. The H2+/N2+ ion composition of the beam was varied and the surface composition studied in situ by photoemission electron spectroscopy (XPS). The samples were also ex situ analyzed by X-ray diffraction and scanning electron microscopy (SEM), including energy-dispersive spectroscopy measurements. It was found that hydrogen has the effect of modifying the amount of retained nitrogen at the surfaces. This result shows that hydrogen plays a role beyond the well-established effect of oxygen etching in industrial machines where vacuum is relatively less well controlled. Finally, an optimum concentration of 20 to 40% [H2]/[H2+N2] ion beam composition was determined to obtain maximum nitrogen incorporation on the metal surface.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Luiz Fernando Zagonel, C. A. Figueroa, F. Alvarez, F. Zagonel. In situ photoemission electron spectroscopy study of nitrogen ion implanted AISI-H13 steel. Surface and Coatings Technology, 2005, 200 (7), pp.2566 - 2570. ⟨10.1016/j.surfcoat.2004.10.126⟩. ⟨hal-01656975⟩