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摘要TiO2 涂层不仅具有热力学阻挡层的作用，而且在阳光或紫外线的照射下，它还具有光生阴极保护作用，同时拥有表面自清洁作用；SNAP 涂层具有与外涂层结合牢固、稳定性好、耐蚀性强、工艺成本低等优点。为使金属预处理涂层具有智能防腐能力，该两种涂层的改性技术已成为现社会研究的热点问题。 本文采用溶胶-凝胶法分别制备了 TiO2溶胶和 SNAP 溶胶。通过向 TiO2溶胶中掺杂不同量的铬离子，确定制备改性 TiO2涂层的最佳掺杂量；通过向 SNAP 溶胶中掺杂一定量的缓蚀剂，验证了改性 SNAP 涂层的防腐性能得到有效提高。并分别采用 SEM、EIS、XPS 等方法对涂层进行表征与测试。 实验结果表明：掺杂铬 1%的 TiO2涂层具有一定的自修复能力；掺杂缓蚀剂的SNAP 涂层的耐腐蚀性能要明显优于未掺杂的。59971
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毕业论文关键词 溶胶-凝胶 TiO2涂层 SNAP 涂层 掺杂铬 掺杂缓蚀剂 自修复
Title Study on synthesis and properties of intelligent anti-corrosion coating
Abstract TiO2 coating not only has the function of thermodynamic barrier layer, but also has light function for Cathodic Protection, in the sunlight or ultraviolet radiation ,and surface self-cleaning effect; SNAP coating has the advantages of firmly bonding with the outer coating, good stability, strong corrosion resistance, low process cost. In order to make the metal pretreatment coating with intelligent anti-corrosion ability, the two coatings modified technology has become the hot research issues in recent years. In this paper, TiO2 and SNAP coating were prepared by the sol - gel method. To determine the optimal doping amount of preparation of modified TiO2 coating , different amounts of chromium ions had been doped with to the TiO2 sol ;To verify the anti-corrosion properties of the modified SNAP coating , a certain amount of corrosion inhibitor had been doped with to SNAP sol. SEM, EIS, XPS and other methods were used to characterize and test the coatings. The experimental results demonstrated that TiO2 coating doped with chromium 1% has the self-healing ability ; SNAP coating doped with corrosion inhibitor performance was superior to that of the undoped.
Keywords sol–gel TiO2 coating SNAP coating dope with chromium dope with corrosion inhibitor
目录
1引言.1
1.1金属腐蚀及其研究背景..1
1.2溶胶-凝胶技术简介及其在金属防腐方面的应用2
1.2.1溶胶-凝胶技术简介2
1.2.2溶胶-凝胶涂层的制备..3
1.2.3溶胶-凝胶涂层制备的影响因素.5
1.2.4TiO2溶胶-凝胶的制备5
1.2.5SNAP溶胶-凝胶的制备..6
1.3溶胶-凝胶涂层性质的评价方法.7
1.3.1扫描电子显微镜(SEM).7
1.3.2X射线光电子能谱（XPS）.8
1.3.3透射电子显微镜(TEM)8
1.3.4电化学阻抗谱（EIS）.8
1.4智能防腐涂层简介及应用.8
1.4.1智能防腐涂层简介.8
1.4.2溶胶-凝胶技术在智能防腐涂层中的应用9
1.5本论文的主要研究内容..9
2掺杂铬元素的TiO2涂层的制备和研究11
2.1实验试剂、实验仪器及设备..11
2.1.1实验试剂.11
2.1.2实验仪器及设备.11
2.2掺杂铬离子的TiO2涂层的制备与表征..12
2.2.1TiO2溶胶的制备12
2.2.2掺杂铬离子的TiO2涂层的制备..12
2.2.3掺杂铬离子的TiO2涂层的表征..14
2.3实验结果与讨论15
2.3.1SEM观测结果与分析15
2.3.2XPS观测结果与分析.15
2.3.3电化学阻抗谱测试结果与分析16
2.3.4加速腐蚀实验结果与分析..18
2.4本章小结18