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- Title
Preparation and Corrosion Resistance of Superhydrophobic Coatings on 7005 Aluminum Alloy.
- Authors
Huang, Huilan; Guo, Feng; Li, Xintao; Xia, Peng; Yang, Li; Hu, Chuanbo
- Abstract
Composite coatings on the surface of a semi-continuous cast 7005 aluminum alloy under different aging treatments (T6, RRA, and FSA) are presented and characterized in this research. SiO2 combined with stearic acid (STA) modified by KH550 was utilized to achieve multifunctional superhydrophobic coatings. Adhesive tape adhesion, blade scratch, and mechanical wear tests were utilized to assess the durability of the superhydrophobic coatings. The results showed that the prepared coatings exhibited excellent superhydrophobicity, self-cleaning ability, and mechanical properties, especially the T6 temper alloy. This alloy had the largest CA value (156.5°) and the lowest SA value (4.3°). The composite coatings still exhibited excellent superhydrophobicity under mechanical damage. Furthermore, the alloys with STA/SiO2 displayed marvelous corrosion resistance efficiency. The T6 temper alloy with a protection rate of 73.8% had an approximately one-order-of-magnitude decrement in carrion current density. The composite coating can be effectively utilized in various industrial fields, thus extending its potential impact.
- Subjects
MECHANICAL wear testing; CORROSION resistance; COMPOSITE coating; SURFACE coatings; ALUMINUM alloys; STEARIC acid; ADHESIVE tape
- Publication
Coatings (2079-6412), 2024, Vol 14, Issue 4, p499
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings14040499