Analysis of the Passive Layer Developed on Two Stainless Steels Co-Implanted with Chromium and Nitrogen

C.M. Abreu; M.J. Cristóbal; P. Merino; Xosé R.  Nóvoa; G. Pena; M.C. Pérez

doi:10.4028/www.scientific.net/MSF.587-588.800

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HomeMaterials Science ForumMaterials Science Forum Vols. 587-588Analysis of the Passive Layer Developed on Two...

Analysis of the Passive Layer Developed on Two Stainless Steels Co-Implanted with Chromium and Nitrogen

Abstract:

Surface analysis techniques (XPS and grazing incidence X-ray diffraction GIXRD) and electrochemical techniques have been combined to elucidate the effect resulting from Cr+ and N+ co-implantation in the formation and evolution of passive layers generated on two different stainless steels (AISI 430 and AISI 304L) in alkaline medium. The results show that the nitrides formed on AISI 430, identified as (Cr,Fe)2N1-x, are less resistant to dissolution while the nitride phase formed in AISI 304L, NCr with nanocrystalline structure, allows the compact growth of the oxide film.