Abstract
A bionic superhydrophobic coating with good corrosion resistance was prepared by one-step nano-silver deposition on a copper substrate. The superhydrophobic surface was covered with petal-like and coral-like micro/nano-structures. With the highest water contact angle of 169.9°, the superhydrophobic coating has good superhydrophobicity. The surface morphology, chemical composition, and wettability of the samples were characterized by scanning electron microscopy, Fourier transformed infrared, x-ray diffraction, and water contact angle measurement. The corrosion resistance tests showed a significant improvement on the superhydrophobic sample.
Highlights
Among all kinds of metals and alloys, copper is known for its high toughness, good electrical and thermal conductivity, excellent mechanical and chemical properties, etc.1,2 Copper can be seen to be widely used as a conductor in electrical power lines and machinery manufacturing, heat conductors, and heat exchangers.3,4 relatively abundant, corrosion has posed a serious threat to copper and its alloys due to poor protection measures, which has handicapped their industrial application.In recent years, new progress has been made on the corrosion protection for copper, in the study of superhydrophobic films
The results show that the superhydrophobic surface is composed of Cu, Ag, C, and F elements, with copper and silver accounting for 50.28% and 34.53%, respectively
A superhydrophobic copper surface with a maximum contact angle of 169.9○ and a rolling angle of 8○ was prepared by one-step chemical deposition
Summary
Among all kinds of metals and alloys, copper is known for its high toughness, good electrical and thermal conductivity, excellent mechanical and chemical properties, etc. Copper can be seen to be widely used as a conductor in electrical power lines and machinery manufacturing, heat conductors, and heat exchangers. relatively abundant, corrosion has posed a serious threat to copper and its alloys due to poor protection measures, which has handicapped their industrial application. Many researchers have conducted experiments to fabricate various superhydrophobic surfaces on polymers, metals, semiconductors, and other materials. They have broad application prospects in self-cleaning, anti-fouling, anti-corrosion, and drag reduction, promoting the development of copper corrosion prevention.. Superhydrophobic surfaces can transform the wettability of the copper surface from a hydrophobic state to a superhydrophobic state, minimizing the contact area of the corrosive liquid with the copper matrix, thereby improving the corrosion resistance of the copper. It can delay the corrosion rate of copper, which greatly extends the life of copper.. Scitation.org/journal/adv has advantages in simple operation and low cost, which will have great value for a large-scale preparation of superhydrophobic surfaces
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