Superhydrophobic surface based on nano-engineering for enhancing the durability of anticorrosion

ABSTRACT

Here, a new class superhydrophobic surface based on nano-engineering was proposed and prepared to improve the durability of corrosion protect. Moreover, the durability of anticorrosion was evaluated by the Tafel polarization curves and electrochemical impedance spectroscopy under various damages of mechanical abrasion, chemical immersion and cool/thermal treatment. The superhydrophobic surface based on nano-engineering still showed excellent anticorrosion performance, such as low corrosion current (∼10⁻¹⁰ A cm⁻²), large polarization resistance (>150.0 MΩ cm²) and low corrosion rate (∼10⁻⁶ mm/year). The good durability was attributed to the special nano-engineering with low surface roughness and surface energy. The work provides a new method to improve the durability of the superhydrophobic surfaces for application in anticorrosion technology.

KEYWORDS:

• Superhydrophobic surfaces
• nano-engineering
• surface energy
• corrosion protection
• durability

Acknowledgments

The authors are grateful for the support of National Natural Science Foundation of China under grants (51773184 and U1810114), and Shanxi Provincial Natural Science Foundation of China (201701D121046 and 201803D421081).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by National Natural Science Foundation of China [grant number 51773184].