Scanning Kelvin probe force microscopy and magnetic force microscopy for characterization of duplex stainless steels

被引:72
作者
Femenia, M [1 ]
Canalias, C
Pan, J
Leygraf, C
机构
[1] Royal Inst Technol, Dept Mat Sci & Engn, Div Corros Sci, SE-10044 Stockholm, Sweden
[2] Royal Inst Technol, Dept Phys, Div Laser Phys & Quantum Opt, SE-10044 Stockholm, Sweden
关键词
D O I
10.1149/1.1572482
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
In this study, the Volta potential distribution over the surface of duplex stainless steels (DSSs) has been mapped for the first time with submicrometer resolution by scanning Kelvin probe force microscopy (SKPFM). The different magnetic properties of ferrite and austenite enable the utilization of magnetic force microscopy (MFM) for visualizing their surface distribution without the need of surface etching. The combined MFM and SKPFM mapping of the same area makes it possible to associate the variation in the Volta potential to the phase distribution and phase boundaries. The difference in potential between the two phases is measurable and significant. Generally, the ferrite phase was associated to regions of lower potential, and the austenite phase to regions of more noble potential. This can be regarded as direct evidence of galvanic interactions between the two phases. The phase boundary regions often exhibited a lower potential in the ferrite phase, indicating a higher tendency to corrosion. The high lateral resolution of SKPFM provides the possibility of comparing these results with those obtained from other localized techniques, a necessary step for a deeper understanding of the local corrosion processes in DSSs. (C) 2003 The Electrochemical Society.
引用
收藏
页码:B274 / B281
页数:8
相关论文
共 48 条
[1]   Imaging of domain-inverted gratings in LiNbO3 by electrostatic force microscopy [J].
Bluhm, H ;
Wadas, A ;
Wiesendanger, R ;
Roshko, A ;
Aust, JA ;
Nam, D .
APPLIED PHYSICS LETTERS, 1997, 71 (01) :146-148
[2]   Relation between microstructural aspects of AA2024 and its corrosion behaviour investigated using AFM scanning potential technique [J].
Campestrini, P ;
van Westing, EPM ;
van Rooijen, HW ;
de Wit, JHW .
CORROSION SCIENCE, 2000, 42 (11) :1853-1861
[3]   Scanning Kelvin probe analysis of the potential distribution under small drops of electrolyte [J].
Chen, C ;
Breslin, CB ;
Mansfeld, F .
ELECTROCHEMICAL METHODS IN CORROSION RESEARCH VI, PTS 1 AND 2, 1998, 289-2 :181-191
[4]   Potential distribution in the Evans drop experiment [J].
Chen, CY ;
Mansfeld, F .
CORROSION SCIENCE, 1997, 39 (02) :409-413
[5]  
COMBRADE O., 1991, P DSS C BEAUN FRANC, P257
[6]   Atomic force and magnetic force microscopics applied to duplex stainless steels [J].
Dias, A ;
Andrade, MS .
APPLIED SURFACE SCIENCE, 2000, 161 (1-2) :109-114
[7]   In situ local dissolution of duplex stainless steels in 1 M H2SO4+1 M NaCl by electrochemical scanning tunneling microscopy [J].
Femenia, M ;
Pan, J ;
Leygraf, C .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (06) :B187-B197
[8]   In situ study of selective dissolution of duplex stainless steel 2205 by electrochemical scanning tunnelling microscopy [J].
Femenia, M ;
Pan, J ;
Leygraf, C ;
Luukkonen, P .
CORROSION SCIENCE, 2001, 43 (10) :1939-1951
[9]   In situ high-resolution microscopy on duplex stainless steels [J].
Garfias, LF ;
Siconolfi, DJ .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2000, 147 (07) :2525-2531
[10]   Metastable pitting in 25 Cr duplex stainless steel [J].
Garfias-Mesias, LF ;
Sykes, JM .
CORROSION SCIENCE, 1999, 41 (05) :959-987