Abstract
This work investigates the influence of the direct laser texturing at high fluences (DLT-HF) on surface mor - phology, chemistry, and wettability. We use a Nd:YAG laser (gamma= 1064 nm) with pulse duration of 95 ns to process stain- less steel surface. The surface morphology and chemistry after the texturing is examined by using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and electron backscatter diffraction (EBSD), while the surface wettability is evaluated by measuring the static contact angle. Immediately after the texturing, the surface is superhydrophilic in a saturated Wenzel regime. However, this state is not stable and the superhydrophilic-to-superhy - drophobic transition happens if the sample is kept in atmos- pheric air for 30 days. After this period, the laser-textured stainless steel surface expresses lotus-leaf-like behavior. By using a high-speed camera at 10,000 fps, we measured that the water droplet completely rebound from this superhydro- phobic surface after the contact time of 12 ms.
Keywords
surface engineering;laser microstructuring;surface functionalization;
Data
Language: |
English |
Year of publishing: |
2017 |
Typology: |
1.01 - Original Scientific Article |
Organization: |
UL FS - Faculty of Mechanical Engineering |
UDC: |
535(045) |
COBISS: |
15750427
|
ISSN: |
0947-8396 |
Views: |
2321 |
Downloads: |
518 |
Average score: |
0 (0 votes) |
Metadata: |
|
Other data
Secondary language: |
Slovenian |
Secondary keywords: |
inženiring površin;lasersko mikrostrukturiranje;funkcionalizacija površin; |
Type (COBISS): |
Not categorized |
Embargo end date (OpenAIRE): |
2018-11-13 |
Pages: |
str. 1-8 |
Issue: |
ǂVol. ǂ123 |
Chronology: |
Nov. 2017 |
DOI: |
10.1007/s00339-017-1392-5 |
ID: |
10914917 |