Short- and long-term wettability evolution and corrosion resistance of uncoated and polymer-coated laser-textured steel surface

Conradi, Marjetka (avtor), Sever, Tina (avtor), Gregorčič, Peter (avtor), Kocijan, Aleksandra (avtor)

We present the results of one year observation of wetting and corrosion properties of nanosecond fiber laser-textured stainless steel, uncoated and coated with epoxy or FAS (fluoroalkylsilane)-TiO$_2$/epoxy. A comparative study was performed on samples kept under ambient conditions and in reduced air pressure and humidity. The results show the ability to induce wettability conversion from initially superhydrophilic to final superhydrophobic state either indirectly by ageing the uncoated laser-textured surface or directly by application of FAS-TiO$_2$/epoxy coating. The storage conditions significantly influenced the wettability development of uncoated laser-textured steel, i.e., the process of ageing was slowed down in reduced air pressure and humidity. Detailed surface chemical analysis revealed that adsorption of the organic matters from the surrounding media influences the wettability conversion and ageing. However, the ageing of the coated surfaces was not affected by the storage conditions. Corrosion stability of uncoated laser-textured surfaces was enhanced over time due to the wettability transition, depending on their morphology. Coatings represent a superior barrier over the texture and wettability with the stable long-term surface protection against aggressive media.

• Jezik: Angleški jezik
• Ključne besede: stainless steels, laser surface engineering, wettability conversion, surface chemistry, polymer coatings
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2019
• Št. strani: 15 str.
• Številčenje: Vol. 9, iss. 9, art. 592
• PID: 20.500.12556/RUL-111111
• UDK: 544.722.3:669.14.018.8 (045)
• ISSN pri članku: 2079-6412
• DOI: 10.3390/coatings9090592
• COBISS.SI-ID: 1510570
• Datum objave v RUL: 24.09.2019

Gradivo je del revije

• Naslov: Coatings
• Skrajšan naslov: Coatings
• Založnik: MDPI AG
• ISSN: 2079-6412
• COBISS.SI-ID: 523035673

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 19.09.2019

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: nerjavna jekla, laserski inženiring površin, omočljivost, korozijska odpornost