Study of anti-corrosion and anti-wear properties on superhydrophobic aluminium alloy surfaces. Issue 15 (13th October 2018)

• Record Type: Journal Article
• Authors: Qiu, Rongxian; Wu, Zhilin; Xu, Jinkai
• Is Part Of: Materials science and technology. Volume 34:Issue 15(2018)
• Page Start: 1861
• Page End: 1867
• Publication Date: 2018-10-13
• Subjects: Salt environments -- corrosion -- wear -- superhydrophobic surface; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2018.1495879
• Languages: English
• ISSNs: 0267-0836

Abstract

ABSTRACT: To improve the wear and corrosion resistance of aluminium alloys in salt environments, we produced superhydrophobic surfaces via high-speed electrical discharge machining. The specimens were characterised using a scanning electron microscope and a laser scanning confocal microscope and through contact angle (CA) measurement, measurement of electrochemical corrosion at an electrochemical workstation and wear testing. Results showed that the superhydrophobic specimens had a water CA of 151.5°. The corrosion of the as-obtained superhydrophobic specimens was significantly reduced by more than 50%, indicating their excellent anti-corrosion properties. The wear of as-obtained superhydrophobic specimens were reduced by approximately 10–35% in dry conditions and by approximately 45–85% in 3.5% NaCl solution, revealing their excellent anti-wear properties in both dry and salt environments.