声明
摘要
Abstract
Contents
1 Introduction
1.1 Aluminum and its alloys
1.1.1 Characteristics and application of aluminum
1.1.2 Challenges in the use of aluminum and its alloys
1.1.3 Improving the corrosion resistance of aluminum and its alloys
1.2 Superhydrophobicity
1.2.2 History of superhydrophobic materials
1.2.3 Existence of superhydrophobicity in nature
1.3 Theoretical background of superhydrophoic surface
1.3.2 Wenzel Model
1.3.3 Cassie Model
1.4 Fabrication of superhydrophobic surfaces
1.5 Superhydrophobic material on the aluminum alloy surface and it's applications in self-cleaning and anti-icing
1.6 Technical problems in the preparation of superhydrophobic surface
1.7 Objective of this thesis
2 Constructing superhydrophobic aluminum alloy surface via boiling water treatment+Ethanol-STA-H2O solution modification method
2.1 Introduction
2.2 Experimental work
2.2.1 Experimental materials and apparatus
2.2.2 Fabrication method
2.2.3 Characterization methods and instruments
2.3 Results and discussions
2.3.1 Wettability and structure of aluminum alloy surface
2.3.2 Phase structure of the superhydrophobic aluminum alloy surface
2.3.3 Effect of boiling water treatment time on the wettability of aluminum alloy surface
2.3.4 Effect of temperature on the wettability of aluminum alloy surface and microstructure
2.3.5 Effect of STA immersion time on the aluminum alloy surface wettability
2.3.6 Morphology and Hydrophobic Mechanism of Superhydrophobic aluminum alloy surface
2.4 Summary
3 Fabrication of superhydrophobic aluminum alloy surface by one step method in Ethanol-STA-H2O solution
3.1 Introduction
3.2 Experimental materials and apparatus
3.2.1 Experimental materials
3.2.2 Experimental apparatus and equipment
3.2.3 Fabrication method
3.2.4 Surface charactcrization
3.3.1 Hydrophobic diversity and stability of superhydrophobic aluminum alloy
3.3.2 Microstructure and wettability of aluminum alloy surface
3.3.3 Chemical structure of the superhydrophobic aluminum alloy surface
3.3.4 Mechanism of hydrophobicity
3.4 Summary
4 Corrosion resistance and antifouling performance of superhydrophobic aluminum alloy surface
4.1 Introduction
4.2 Experimental section
4.3 Corrosion resistance of superhydrophobic surface preparation via two step method
4.4 Corrosion resistance of superhydrophobic aluminum alloy surface construction via one step method
4.4.1 Corrosion potential and corrosion current density of aluminum alloy surface
4.4.2 Analysis of corrosion resistance mechanism on surface of superhydrophobic aluminum alloy
4.5 Self-cleaning performance
4.5.1 Self-cleaning test
4.5.2 Study on the self-cleaning performance of superhydrophobic aluminum alloy surface through different contaminants
4.6 Summary
5 Conclusion and future prospects
5.1 Conclusion
5.2 Future prospects
Acknowledgment
References
Achievements