Povzetek
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.
Ključne besede
surface engineering;laser microstructuring;surface functionalization;
Podatki
Jezik: |
Angleški jezik |
Leto izida: |
2017 |
Tipologija: |
1.01 - Izvirni znanstveni članek |
Organizacija: |
UL FS - Fakulteta za strojništvo |
UDK: |
535(045) |
COBISS: |
15750427
|
ISSN: |
0947-8396 |
Št. ogledov: |
2321 |
Št. prenosov: |
518 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Slovenski jezik |
Sekundarne ključne besede: |
inženiring površin;lasersko mikrostrukturiranje;funkcionalizacija površin; |
Vrsta dela (COBISS): |
Delo ni kategorizirano |
Konec prepovedi (OpenAIRE): |
2018-11-13 |
Strani: |
str. 1-8 |
Zvezek: |
ǂVol. ǂ123 |
Čas izdaje: |
Nov. 2017 |
DOI: |
10.1007/s00339-017-1392-5 |
ID: |
10914917 |