Wettability transition of laser textured brass surfaces inside different mediums
| Autor: | Fengping Li, Mohamed Raiz B. Abdul Rashid, Si Ying Khew, Minghui Hong, Huangping Yan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Scanning electron microscope General Physics and Astronomy 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Brass Contact angle X-ray photoelectron spectroscopy law Immersion (virtual reality) Composite material Metallurgy Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Laser 0104 chemical sciences Surfaces Coatings and Films visual_art visual_art.visual_art_medium Wetting Absorption (chemistry) 0210 nano-technology |
| Zdroj: | Applied Surface Science. 427:369-375 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2017.08.218 |
| Popis: | Hydrophobic surface on brass has attracted intensive attention owing to its importance in scientific research and practical applications. Laser texturing provides a simple and promising method to achieve it. Reducing wettability transition time from hydrophilicity to hydrophobicity or superhydrophobicity remains a challenge. Herein, wettability transition of brass surfaces with hybrid micro/nano-structures fabricated by laser texturing was investigated by immersing the samples inside different mediums. Scanning electron microscopy, energy-dispersive X-ray analysis, X-ray photoelectron spectroscopy and surface contact angle measurement were employed to characterize surface morphology, chemical composition and wettability of the fabricated surfaces of brass samples. Wettability transition time from hydrophilicity to hydrophobicity was shortened by immersion into isopropyl alcohol for a period of 3 h as a result of the absorption and accumulation of organic substances on the textured brass surface. When the textured brass sample was immersed into sodium bicarbonate solution, flower-like structures on the sample surface played a key role in slowing down wettability transition. Moreover, it had the smallest steady state contact angle as compared to the others. This study provides a facile method to construct textured surfaces with tunable wetting behaviors and effectively extend the industrial applications of brass. |
| Databáze: | OpenAIRE |
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