{"title":"利用 pH 响应双纳米容器的智能自修复涂层为铝合金提供腐蚀保护","authors":"","doi":"10.1016/j.surfcoat.2024.131305","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, a novel smart self-healing coating was developed for aluminum alloy surfaces using chitosan and mesoporous ZSM-5 molecular sieve as dual nanocontainers. These nanocontainers effectively address the challenges of limited loading capacity and uncontrolled release of corrosion inhibitors by offering pH-responsive properties that enable complementary release in both acidic and alkaline environments. The synthesized coating exhibited excellent anticorrosion and self-healing performance, as demonstrated by a corrosion inhibition efficiency of 99.98 % after 36 h of static corrosion and significant improvements in impedance values at defect sites. The self-healing mechanism is primarily driven by the formation of Ce(OH)₃ and CeO₂, which precipitate and accumulate at the corrosion sites, thereby preventing further degradation. This study highlights the potential of pH-responsive dual nanocontainer-based coatings for enhancing the durability and protection of aluminum alloys in corrosive environments.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A smart self-healing coating utilizing pH-responsive dual nanocontainers for corrosion protection of aluminum alloy\",\"authors\":\"\",\"doi\":\"10.1016/j.surfcoat.2024.131305\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In this study, a novel smart self-healing coating was developed for aluminum alloy surfaces using chitosan and mesoporous ZSM-5 molecular sieve as dual nanocontainers. These nanocontainers effectively address the challenges of limited loading capacity and uncontrolled release of corrosion inhibitors by offering pH-responsive properties that enable complementary release in both acidic and alkaline environments. The synthesized coating exhibited excellent anticorrosion and self-healing performance, as demonstrated by a corrosion inhibition efficiency of 99.98 % after 36 h of static corrosion and significant improvements in impedance values at defect sites. The self-healing mechanism is primarily driven by the formation of Ce(OH)₃ and CeO₂, which precipitate and accumulate at the corrosion sites, thereby preventing further degradation. This study highlights the potential of pH-responsive dual nanocontainer-based coatings for enhancing the durability and protection of aluminum alloys in corrosive environments.</div></div>\",\"PeriodicalId\":22009,\"journal\":{\"name\":\"Surface & Coatings Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-10-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Surface & Coatings Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0257897224009368\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, COATINGS & FILMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface & Coatings Technology","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0257897224009368","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
A smart self-healing coating utilizing pH-responsive dual nanocontainers for corrosion protection of aluminum alloy
In this study, a novel smart self-healing coating was developed for aluminum alloy surfaces using chitosan and mesoporous ZSM-5 molecular sieve as dual nanocontainers. These nanocontainers effectively address the challenges of limited loading capacity and uncontrolled release of corrosion inhibitors by offering pH-responsive properties that enable complementary release in both acidic and alkaline environments. The synthesized coating exhibited excellent anticorrosion and self-healing performance, as demonstrated by a corrosion inhibition efficiency of 99.98 % after 36 h of static corrosion and significant improvements in impedance values at defect sites. The self-healing mechanism is primarily driven by the formation of Ce(OH)₃ and CeO₂, which precipitate and accumulate at the corrosion sites, thereby preventing further degradation. This study highlights the potential of pH-responsive dual nanocontainer-based coatings for enhancing the durability and protection of aluminum alloys in corrosive environments.
期刊介绍:
Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance:
A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting.
B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.