潘成成,宋诗哲,胡文彬,夏大海.钝性金属表面共价结合自组装膜制备及耐蚀性研究进展[J].表面技术,2019,48(12):43-53.
PAN Cheng-cheng,SONG Shi-zhe,HU Wen-bin,XIA Da-hai.Preparation and Corrosion Resistance of Covalent Self-assembled Monolayers on Passive Metal Surface[J].Surface Technology,2019,48(12):43-53 |
| 钝性金属表面共价结合自组装膜制备及耐蚀性研究进展 |
| Preparation and Corrosion Resistance of Covalent Self-assembled Monolayers on Passive Metal Surface |
| 投稿时间：2019-09-25 修订日期：2019-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.12.005 |
| 中文关键词: 自组装膜 钝化金属 共价结合 耐蚀性 |
| 英文关键词:self-assembled monolayers passive metal covalent combination corrosion resistance |
| 基金项目:国家自然科学基金项目（51701140）；中国科学院核用材料与安全评价重点实验室开放课题项目（2018NMSAKF01） |
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| Author | Institution |
| PAN Cheng-cheng | Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China |
| SONG Shi-zhe | Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China |
| HU Wen-bin | Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China |
| XIA Da-hai | Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China |
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| 中文摘要: |
| 海洋环境中的Cl-是影响不锈钢和铝合金等钝性金属钝化膜稳定性的关键因素。共价结合分子自组装膜具有环境友好、成本低、热力学稳定性好、工艺简单的特点，是提升钝化膜稳定性的有效策略且已成为近年来的研究热点。共价结合自组装膜虽然厚度只有几纳米，但结合力好，可实现层层自组装，为不锈钢的腐蚀防护注入了新的活力。综述了常见的单分子体系组装膜和复合体系组装膜，探讨了各种组装膜的组装机理、影响组装膜质量的因素及在腐蚀防护中的潜在应用。其中单分子体系组装膜主要包括硅烷类、膦酸化合物类、羟基化合物、儿茶酚类衍生物、芳基重氮类化合物等。单分子体系组装膜，由于致密性、均一性、覆盖度等尚未达到理想要求，因此逐步向多分子体系组装膜发展，以进一步优化组装膜的综合性能。未来工作需进一步发展适用于评价组装膜机理和组装过程的原位实时表征技术，结合量子化学计算和先进的材料表征手段，从微纳米尺度和原子尺度搞清成键形式、分子取向等重要信息。开发新型可有效阻隔H2O分子和Cl-传输的功能性有机分子或聚合物，为实现金属材料的主动腐蚀防护提供科学依据。 |
| 英文摘要: |
| Chloride ions in the marine atmosphere are one of the most critical factors that affect the stability of the passive film formed on passive metals like stainless steel, Al alloy, etc. Self-assembled monolayers with covalent bond is one of the most effective ways for enhancing the stability of passive film and is the hot research in recent years due to environmentally friendly feature, low cost, high thermodynamic stability and simple process. The self-assembled monolayers only have thickness of several nm, but show good attachment and can achieve layer-by layer assembling, thus providing a new strategy for corrosion protection of stainless steel. The covalent self-assembled monolayers, including single molecule system and multi molecule systems were reviewed, and the assembling mechanism of each film, the factors influencing the film assembling and the potential applications in corrosion protection were discussed. The film of single molecule system mainly included silanes, phosphonic acid compounds, hydroxyl compounds, catechol derivatives, aryldiazo compounds, etc. Due to the poor compactness, uniformity, and coverage rate, the film of single molecule system gradually developed to the monolayers of multi molecule systems, so as to further optimize the comprehensive performance of assembling film. Future work needs to further develop in-situ real-time characterization technology suitable for evaluating the mechanism and assembly process of assembled films. Combining quantum chemical calculation and advanced material characterization methods, important information such as bonding forms, molecular orientation and others can be obtained from micro-nano scale and atomic scale. Future work can focus on the real in-situ characterization technique combined with quantum chemistry calculation that can be used to investigate the assembling process and the assembling mechanism, to clarify the bond type and molecular orientation at atomic, micro and nano scales. There is a great need to develop new types of organic molecules or polymers that can effectively block H2O molecules and Cl- transport to provide scientific basis for active corrosion protection of metallic materials. |
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