Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 12, Pages 11106-11115Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b16848
Keywords
AZ31 magnesium alloy; ZIF-8@SiO2; superhydrophobic; antiattrition; corrosion resistance
Funding
- National Natural Science Foundation of China [NSFC 51301050]
- Fundamental Research Funds of the Central University (HEUCFZ)
- Natural Science Foundation of Heilongjiang Province [B2015021]
- International Science & Technology Cooperation Program of China [2015DFA500.50]
- Magor Project of Science and Technology of Heilongjiang Province [GA14A101]
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Superhydrophobic coatings are highly promising for protecting material surfaces and for wide applications. In this study, superhydrophobic composites, comprising a rhombic-dodecahedral zeolitic imidazolate framework (ZIF-8@SiO2), have been manufactured onto AZ31 magnesium alloy via chemical etching and dip-coating methods to enhance stability and corrosion resistance. Herein, we report on a simple strategy to modify hydrophobic hexadecyltrimethoxysilan (HDTMS) on ZIF-8@SiO2 to significantly improve the property of repelling water. We show that various liquids can be stable on its surface and maintain a contact angle higher than 150. The morphologies and chemical composition were characterized by means of scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FI-IR). In addition, the anticorrosion and antiattrition properties of the film were assessed by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization and HT, respectively. Such a coating shows promising potential as a material for large-scale fabrication.
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