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Superhydrophobic surfaces are commonly fabricated by a combination of hierarchical rough structures and low surface energy materials. The hierarchical rough structures of micrometre-scale lump-like structures and sub-micrometre-scale concave–convex structures were firstly and directly fabricated on the surfaces of magnesium (Mg) alloy plates by a simple chemical corrosion. Then, chemical modification with fluoroalkylsilane (FAS) and stearic acid was employed to decrease surface energy. Effect of the composition of chemical corrosive solution on the surface morphology was also studied. Results show that a good superhydrophobic surface on Mg alloy substrates with a 163.4° static water contact angle and 8° rolling angle was obtained via chemical corrosion and FAS modification. The chemicals NiSO4 and NaH2PO2 are both essential to fabricate the hierarchical rough structures needed by the superhydrophobic surfaces.
References
-
-
1)
-
T. Ishizaki ,
N. Saito
.
Rapid formation of a superhydrophobic surface on a magnesium alloy coated with a cerium oxide film by a simple immersion process at room temperature and its chemical stability.
Langmuir
,
9749 -
9755
-
2)
-
W. Barthlott ,
C. Neinhuis
.
Purity of the sacred lotus, or escape from contamination in biological surfaces.
Planta
,
1 -
8
-
3)
-
D.K. Sarkar ,
M. Farzaneh ,
K.L. Mittal
.
(2008)
Superhydrophobic aluminum surfaces obtained by chemical etching, Contact angle, wettability and adhesion.
-
4)
-
R. Ambat ,
W. Zhou
.
Electroless nickel-plating on AZ91D magnesium alloy: effect of substrate microstructure and plating parameters.
Surf. Coat. Technol.
,
124 -
134
-
5)
-
X. Yao ,
Y.L. Song ,
L. Jiang
.
Applications of bio-inspired special wettable surfaces.
Adv. Mater.
,
719 -
734
-
6)
-
A.K. Sharma ,
M.R. Suresh ,
H. Bhojraj ,
H. Narayanamurthy ,
R.P. Salm
.
Electroless nickel plating on magnesium alloy.
Metal Finishing
,
12 -
16
-
7)
-
B.S. Xu ,
S.C. Liu
.
(2009)
Electroless nickel-plating, Xu B.S., Liu S.C. (Eds.): ‘Surface engineering technology manual.
-
8)
-
M. Luo ,
P. Guan ,
W.H. Liu
.
The identification of several saturated fatty acids and their salts by means of infrared spectrometry.
Spectrosc. Spectral Anal.
,
250 -
253
-
9)
-
Y.H. Wang ,
W. Wang ,
L. Zhong ,
J. Wang ,
Q.L. Jiang ,
X.Y. Guo
.
Super-hydrophobic surface on pure magnesium substrate by wet chemical method.
Appl. Surf. Sci.
,
3837 -
3840
-
10)
-
Z. Chen ,
F. Li ,
L.M. Hao ,
A.Q. Chen ,
Y.C. Kong
.
One-step electrodeposition process to fabricate cathodic superhydrophobic surface.
Appl. Surf. Sci.
,
1395 -
1398
-
11)
-
B. Yin ,
L. Fang ,
J. Hu ,
A.Q. Tang ,
W.H. Wei ,
J. He
.
Preparation and properties of super-hydrophobic coating on magnesium alloy.
Appl. Surf. Sci.
,
1666 -
1671
-
12)
-
J. Liang ,
Z.G. Guo ,
J. Fang ,
J.C. Hao
.
Fabrication of superhydrophobic surface on magnesium alloy.
Chem. Lett.
,
416 -
417
-
13)
-
G. Ballerini ,
U. Bardi ,
R. Bignucolo ,
G. Ceraolo
.
About some corrosion mechanisms of AZ91D magnesium alloy.
Corros. Sci.
,
2173 -
2184
-
14)
-
W.J. Xiao ,
Z.C. Huang ,
Z.H. He
.
Tuning the wettability on La0.7Sr0.3MnO3 coating from superhydrophilicity to superhydrophobicity by hierarchical microstructure.
Appl. Phys. Lett.
,
083101 -
083101
-
15)
-
L. Feng ,
S.H. Li ,
Y.S. Li
.
Super-hydrophobic surfaces: from natural to artificial.
Adv. Mater.
,
1857 -
1860
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