ZnO nanorods induce the chemical conversion of zinc particles for enhancing the active protection of fluorocarbon coatings.
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| Title: | ZnO nanorods induce the chemical conversion of zinc particles for enhancing the active protection of fluorocarbon coatings. |
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| Authors: | He, Dandan1 (AUTHOR), Wang, Lida1,2 (AUTHOR) ldwang@dlut.edu.cn, Yang, Zhengqing1 (AUTHOR), Sun, Wen1,2 (AUTHOR), Liu, Guichang1,2 (AUTHOR) gchliu@dlut.edu.cn, Zhang, Qiang3 (AUTHOR) |
| Source: | Journal of Industrial & Engineering Chemistry. Feb2025, Vol. 142, p593-603. 11p. |
| Subjects: | Composite coating, Substrates (Materials science), Nanorods, Particle interactions, Zinc oxide |
| Abstract: | • ZnO nanorod and zinc particles are introduced to design a composite coating. • ZnO promotes the corrosion of zinc particles and converts corrosive media. • Chemical shielding effects are built with the active corrosion of zinc particles. • Protection performance is enhanced by the enhanced chemical shielding effects. Polymer coatings containing zinc particle fillers is widely applied due to their unique protection performance in industry. In this work, zinc oxide (ZnO) nanorods are introduced to further enhance the active protection performance of the coating containing zinc particles. The introduced ZnO promotes the active corrosion of zinc particles due to the interaction between ZnO nanorods and zinc particles, thus building chemical shielding effects by accelerating the conversion of corrosion electrolytes, such as H 2 O, O 2 and ions. It also inhibits the substrate corrosion by creating depleted-oxygen micro-region when the coating subjected to mechanical damage or in the micropores. Furthermore, the enhanced physical shielding effects are accompanied with the chemical shielding effects due to the spontaneous defect filling by corrosion product. The dual shielding effects synergistically enhance the active and passive protection performance. This work provides a unique strategy for designing the functional coatings for corrosion protection. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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