TY - JOUR
T1 - Preparation and Corrosion Resistance of Superhydrophobic Coatings on 7005 Aluminum Alloy
AU - Huang, Huilan
AU - Guo, Feng
AU - Li, Xintao
AU - Xia, Peng
AU - Yang, Li
AU - Hu, Chuanbo
N1 - This work was financially supported by the Applied Foundation Research of Guangdong Province (Grant No. 2022A1515010001), National Natural Science Foundation of China (Grant No. 52001073), Unveiling and Leading Major Technical Demand Project (Grant No. 2021A005), and National Key Research and Development Program of China (Grant No. 2023YFB3710400).
Publisher Copyright:
© 2024 by the authors.
PY - 2024/4/17
Y1 - 2024/4/17
N2 - 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.
AB - 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.
KW - 7005 aluminum alloy
KW - multistage aging treatment
KW - superhydrophobic
KW - sol–gel
UR - http://www.scopus.com/inward/record.url?scp=85191718922&partnerID=8YFLogxK
U2 - 10.3390/coatings14040499
DO - 10.3390/coatings14040499
M3 - Journal article
AN - SCOPUS:85191718922
SN - 2079-6412
VL - 14
JO - Coatings
JF - Coatings
IS - 4
M1 - 499
ER -