Uroš Trdan (Author), Matej Hočevar (Author), Peter Gregorčič (Author)

Abstract

This work investigates the evolution from superhydrophilic to superhydrophobic surface state on corrosion behaviour of SS316L produced by Nd:YAG nanosecond direct laser texturing (DLT). Results confirm perfect correlation among wettability and corrosion, hence superhydrophobic surface with a contact angle of 168 +/- 3.0° reflects in enhanced passivity, lower anodic dissolution and corrosion current reduction. Characterization of the corrosion attack by 3D microscopy reveals high sensitivity of superhydrophilic surfaces on corrosion propagation direction in regard to the laser beam passage (90°/0°). However, this trend completely diminishes with superhydrophobic development. Further, DLT also completely prohibits intergranular corrosion detected with the non-processed sample.

Keywords

lasersko teksturiranje;nerjavno jeklo;polarizacija;interkristalna korozija;pasivacija;jamičasta korozija;stainless steel;polarization;SEM;intergranular corrosion;passivity;pitting corrosion;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 620.178.3:621.7(045)
COBISS: 15482907 Link will open in a new window
ISSN: 0010-938X
Views: 1796
Downloads: 1223
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Other data

Secondary language: Slovenian
Secondary keywords: lasersko teksturiranje;nerjavno jeklo;polarizacija;interkristalna korozija;pasivacija;jamičasta korozija;
Type (COBISS): Article
Pages: str. 21-26
Issue: ǂVol. ǂ123
Chronology: Jul. 2017
DOI: 10.1016/j.corsci.2017.04.005
ID: 10991032