Controlling the stainless steel surface wettability by nanosecond direct laser texturing at high fluences

Gregorčič, Peter (avtor), Šetina Batič, Barbara (avtor), Hočevar, Matej (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: surface engineering, laser microstructuring, surface functionalization
• Vrsta gradiva: Delo ni kategorizirano
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Št. strani: Str. 1-8
• Številčenje: Vol. 123
• PID: 20.500.12556/RUL-98469
• UDK: 535(045)
• ISSN pri članku: 0947-8396
• DOI: 10.1007/s00339-017-1392-5
• COBISS.SI-ID: 15750427
• Datum objave v RUL: 28.02.2018

Gradivo je del revije

• Naslov: Applied physics
• Skrajšan naslov: Appl. phys., A, Mater. sci. process.
• Založnik: Springer
• ISSN: 0947-8396
• COBISS.SI-ID: 14196007

Licence

• Licenca: CC BY-NC-SA 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Deljenje pod enakimi pogoji 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-sa/4.0/deed.sl
• Opis: Licenca Creative Commons, ki prepoveduje komercialno uporabo in zahteva, da uporabnik predelana dela objavi z enako licenco.
• Začetek licenciranja: 04.12.2017

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: inženiring površin, lasersko mikrostrukturiranje, funkcionalizacija površin

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0392
• Naslov: Optodinamika

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0132
• Naslov: Fizika in kemija površin kovinskih materialov