{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T12:58:46Z","timestamp":1790686726850,"version":"4.1.0"},"reference-count":43,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:00:00Z","timestamp":1790640000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Key Research and Development Program in Shaanxi Province of China","award":["2025CY-YBXM-157"],"award-info":[{"award-number":["2025CY-YBXM-157"]}]},{"name":"Open Foundation of Shaanxi Key Laboratory of Carbon Dioxide Sequestration and Enhanced Oil Recovery","award":["YJSYZX25SKF0017"],"award-info":[{"award-number":["YJSYZX25SKF0017"]}]},{"name":"Sichuan Science and Technology Program","award":["2024YFTX0075"],"award-info":[{"award-number":["2024YFTX0075"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Conventional superhydrophobic coatings on aluminum alloys are frequently limited by inadequate coating\u2013substrate adhesion, poor mechanical robustness, and the vulnerability of their surface micro\/nanostructures to mechanical damage. To address these challenges, a hydroxyl-rich anodic oxide interlayer was formed via hard anodization followed by a hydroxylation treatment, thereby enhancing interfacial bonding and providing abundant active anchoring sites for coating deposition. Using this interface-engineering strategy, a mechanically durable superhydrophobic F-SiO2@polyurethane (PU) composite coating with hierarchical micro\/nanostructures was successfully fabricated on aluminum alloy substrates through a facile spray-coating process. The anodized substrate provides abundant hydroxyl groups and interfacial anchoring sites, while the PU matrix enhances structural integrity and facilitates particle fixation. Incorporating fluorinated SiO2 nanoparticles produced a hierarchical micro\/nanostructure with low surface energy. After 10,000 cm of abrasion and 200 tape-peeling cycles, the coating maintained contact angles above 150\u00b0. The coating maintained superior corrosion resistance during prolonged immersion in acidic, alkaline, and saline environments. The improved durability and corrosion resistance originate from the synergistic effects of strong interfacial bonding, polymer barrier protection, and the fluorinated hierarchical structure. This study offers a promising strategy for developing durable superhydrophobic coatings for long-term protection of aluminum alloys.<\/jats:p>","DOI":"10.3390\/ma19194155","type":"journal-article","created":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T12:09:25Z","timestamp":1790683765000},"page":"4155","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Interfacial Regulation of Hard-Anodized Aluminum Alloy for Fabrication of a Wear-Resistant Superhydrophobic F-SiO2@PU Composite Coating with Enhanced Long-Term Corrosion Protection"],"prefix":"10.3390","volume":"19","author":[{"given":"Hong-Bo","family":"Wang","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering, Chang\u2019an University, Xi\u2019an 710064, China"},{"name":"Shaanxi Key Laboratory of Carbon Dioxide Sequestration and Enhanced Oil Recovery, Xi\u2019an 710075, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"project-administration","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Miao","family":"Yu","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chang\u2019an University, Xi\u2019an 710064, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"investigation","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"}]},{"given":"Chong","family":"Ren","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chang\u2019an University, Xi\u2019an 710064, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"visualization","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-3597-2338","authenticated-orcid":false,"given":"Muhaiminul Islam","family":"Shakil","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chang\u2019an University, Xi\u2019an 710064, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-5443-4898","authenticated-orcid":false,"given":"Chen","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chang\u2019an University, Xi\u2019an 710064, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"visualization","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"}]},{"given":"Liang","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chang\u2019an University, Xi\u2019an 710064, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Da-Yan","family":"Ma","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Mechanical Behavior of Materials, Xi\u2019an Jiaotong University, Xi\u2019an 710049, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Wei","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Dongfang Turbine Co., Ltd., Deyang 618000, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e30465","DOI":"10.1002\/adfm.202530465","article-title":"Understanding the Role of Superhydrophobicity and Superhydrophilicity in Salt-Spray Corrosion of Nanosecond Pulsed Laser-Textured AA2024 Alloy","volume":"36","author":"Zschach","year":"2026","journal-title":"Adv. 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