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Effect of chromium and nitrogen co‐implantation on the characteristics of the passive layer developed on austenitic and duplex stainless steels
Author(s) -
Abreu C. M.,
Cristóbal M. J.,
Nóvoa X. R.,
Pena G.,
Pérez M. C.
Publication year - 2008
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2796
Subject(s) - chromium , metallurgy , austenite , materials science , nitrogen , austenitic stainless steel , layer (electronics) , metal , oxide , duplex (building) , electrochemistry , saturation (graph theory) , corrosion , chemistry , microstructure , composite material , electrode , mathematics , organic chemistry , combinatorics , dna , biochemistry
AISI 304L and SAF 2205 stainless steel samples were implanted with chromium plus nitrogen at saturation dose in order to improve their hardness and wear properties. Consequently, the passive layer is modified so that besides the detected presence of CrN, a clear decrease in the amount of Fe oxides forming the passive layer is detected in both steels; this effect is especially important in AISI 304L. Co‐implantation also causes Ni 0 enrichment present at the metal/oxide of unimplanted steels to disappear. The induced changes in the electrochemical response in NaOH solution are finally considered. Copyright © 2008 John Wiley & Sons, Ltd.