Achieving an acid resistant surface on magnesium alloy via bio-inspired design

Hao Wu; Zhen Shi; Xuming Zhang; Abdul Mateen Qasim; Shu Xiao; Fan Zhang; Zhongzhen Wu; Guosong Wu; Kejian Ding; Paul K. Chu

doi:10.1016/j.apsusc.2019.01.181

Author(s)

Xuming Zhang
Shu Xiao
Fan Zhang
Zhongzhen Wu
Guosong Wu
Kejian Ding

Detail(s)

Original language	English
Pages (from-to)	150-161
Journal / Publication	Applied Surface Science
Volume	478
Online published	22 Jan 2019
Publication status	Published - 1 Jun 2019

Link(s)

DOI	DOI https://doi.org/10.1016/j.apsusc.2019.01.181 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85060709585&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(39dd402c-ac14-4464-bb48-6893d231b835).html

Abstract

Developing acid-resistant magnesium alloys is challenging because of the high chemical reactivity of magnesium in acidic media. In this work, a bio-inspired strategy by taking advantage of the super-hydrophobic effects on lotus leaves is described. The self-layered coating consisting of an inner compact layer and outer Mg-Al layered double hydroxide (LDH) microsheet-based layer prepared hydrothermally exhibits enhanced corrosion resistance in saline solutions but cannot resist corrosion in sulfuric acid. After depositing a fluorocarbon polymer film on the microsheets using a polytetrafluoroethylene (PTFE) target by magnetron sputtering, a super-hydrophobic surface is created on the magnesium alloy. Compared to the surface modified hydrothermally, the super-hydrophobic surface provides better corrosion protection in H₂SO₄ due to trapped air pockets in the microsheet array. The dual process offers a promising means to mitigate corrosion of magnesium alloys in acidic media.

Research Area(s)

Corrosion resistance, Hydrothermal treatment, Magnesium alloy, Magnetron sputtering, Super-hydrophobic surface

Citation Format(s)

[ RIS ] [ BibTeX ]

Achieving an acid resistant surface on magnesium alloy via bio-inspired design. / Wu, Hao ; Shi, Zhen; Zhang, Xuming et al.
In: Applied Surface Science, Vol. 478, 01.06.2019, p. 150-161.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Wu, H , Shi, Z, Zhang, X, Qasim, AM, Xiao, S, Zhang, F, Wu, Z, Wu, G, Ding, K & Chu, PK 2019, 'Achieving an acid resistant surface on magnesium alloy via bio-inspired design', Applied Surface Science, vol. 478, pp. 150-161. https://doi.org/10.1016/j.apsusc.2019.01.181

Wu, H., Shi, Z., Zhang, X., Qasim, A. M., Xiao, S., Zhang, F., Wu, Z., Wu, G., Ding, K., & Chu, P. K. (2019). Achieving an acid resistant surface on magnesium alloy via bio-inspired design. Applied Surface Science, 478, 150-161. https://doi.org/10.1016/j.apsusc.2019.01.181

Wu H , Shi Z, Zhang X, Qasim AM, Xiao S, Zhang F et al. Achieving an acid resistant surface on magnesium alloy via bio-inspired design. Applied Surface Science. 2019 Jun 1;478:150-161. Epub 2019 Jan 22. doi: 10.1016/j.apsusc.2019.01.181

Wu, Hao ; Shi, Zhen ; Zhang, Xuming et al. / Achieving an acid resistant surface on magnesium alloy via bio-inspired design. In: Applied Surface Science. 2019 ; Vol. 478. pp. 150-161.