Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/69321
Type: Artigo de periódico
Title: In situ photoemission electron spectroscopy study of nitrogen ion implanted AISI-H13 steel
Author: Zagonel, LF
Figueroa, CA
Alvarez, F
Abstract: 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 H-2(+)/N-2(+) 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 20-40% [H-2]/[H-2+N-2] ion beam composition was determined to obtain maximum nitrogen incorporation on the metal surface. (c) 2004 Elsevier B.V. All rights reserved.
Subject: nitriding
ion implantation
X-ray
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.surfcoat.2004.10.126
Date Issue: 2005
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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