Influence of Mechanical Stress on the Potential Distribution on a 301 LN Stainless Steel Surface | Zendy

Nuria Fuertes | Zendy; A. Nazarov | Zendy; Flavien Vucko | Zendy; Rachel Pettersson | Zendy; Dominique Thierry | Zendy

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Influence of Mechanical Stress on the Potential Distribution on a 301 LN Stainless Steel Surface

Author(s) -

Nuria Fuertes,

A. Nazarov,

Flavien Vucko,

Rachel Pettersson,

Dominique Thierry

Publication year - 2015

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/2.0511509jes

Subject(s) - materials science , kelvin probe force microscope , austenitic stainless steel , composite material , deformation (meteorology) , stress (linguistics) , slip (aerodynamics) , ultimate tensile strength , work hardening , work (physics) , surface stress , plasticity , metallurgy , atomic force microscopy , surface energy , nanotechnology , microstructure , thermodynamics , corrosion , linguistics , philosophy , physics

The aim of the present work was to study the influence of the stress on the electrode potential of the austenitic stainless steel301LN using Scanning Kelvin Probe (SKP). It was found that elastic deformation reversibly ennobles the potential whereas plasticdeformation decreases the potential in both tensile and compressive deformation mode and this decrease is retained even 24 h afterremoval of the load. To interpret the stress effects, different surface preparations were used and the composition and thickness ofthe passive film were determined by GDOES. Slip steps formed due to plastic deformation were observed using AFM. The effect ofplastic strain on the potential is explained by the formation of dislocations, which creates more a defective passive film.

QC 20160516

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