Corrosion Resistance and Durability of Superhydrophobic Copper Surface in Corrosive NaCl Aqueous Solution: Article No. 70

Qibo Li, Chun-Wei Yao, Divine Sebastian, Ian Lian, Ozge Gunaydin-Sen, Robbie Clarke, Kirby Clayton, Chiou-Yun Chen, Krishna Kharel, Yanyu Chen

Research output: Contribution to journalArticlepeer-review

43 Scopus Citations

Abstract

Artificial superhydrophobic copper surfaces play an important role in modern applications such as self-cleaning and dropwise condensation; however, corrosion resistance and durability often present as major concerns in such applications. In this study, the anti-corrosion properties and mechanical durability of superhydrophobic copper surface have been investigated. The superhydrophobic copper surfaces were achieved with wet chemical etching and an immersion method to reduce the complexity of the fabrication process. The surface structures and materials were characterized using scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), and Fourier transform infrared spectrometer (FTIR). The corrosion resistance and mechanical properties of the superhydrophobic copper surface were characterized after immersing surfaces in a 3.5 wt % NaCl solution. The chemical stability of the superhydrophobic copper surface in the NaCl solution for a short period of time was also evaluated. An abrasion test and an ultrasound oscillation were conducted to confirm that the copper surface contained durable superhydrophobic properties. In addition, an atomic force microscope was employed to study the surface mechanical property in the corrosion conditions. The present study shows that the resulting superhydrophobic copper surface exhibit enhanced corrosion resistance and durability.
Original languageAmerican English
Number of pages10
JournalCoatings
Volume8
Issue number2
DOIs
StatePublished - 2018

NREL Publication Number

  • NREL/JA-5400-72063

Keywords

  • AFM
  • anti-corrosion
  • durability
  • superhydrophobic copper surface

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