Yixin Chen , Hao Huang , Zhiqiang Gao , Xiaoda Liu , Qian Wang , Lifeng Hou , Yinghui Wei
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引用次数: 0
Abstract
The design of functional coatings presents significant challenges, especially in achieving an efficient balance and synergy among multiple functions. This study utilized mesoporous silica as structural fillers to encapsulate corrosion inhibitor benzotriazole (BTA) and fluorescent probe fluorescein isothiocyanate (FITC) respectively, developing a dual-functional coating (SiO2-BTA + SiO2-FITC) with outstanding self-warning and self-repairing capabilities based on synergistic effects. The intrinsic stimulus-responsive properties of mesoporous silica were investigated. Disorderness of the mesoporous structure was demonstrated by observing the morphology and analyzing changes in the chemical structure. The accelerated release behavior of BTA and FITC under alkaline stimulation conditions was accurately quantified, with a release rate exceeding 80 %. The corrosion warning of FITC at damage sites is detectable within 10 min under UV light. Electrochemical impedance spectroscopy (EIS) and scanning vibrating electrode technique (SVET) confirmed the synergistic inhibition effects of BTA and FITC, achieving 96.4 % efficiency in protecting the magnesium alloy substrate against corrosion for 24 h. Importantly, the functional coating significantly enhances corrosion resistance, further extending its potential application scope.
期刊介绍:
The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as:
• Chemical, physical and technological properties of organic coatings and related materials
• Problems and methods of preparation, manufacture and application of these materials
• Performance, testing and analysis.