| 疏水型纳米TiO_2膜的制备、表征及耐蚀性能研究 |
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| 引用本文： | 沈广霞,陈艺聪,林昌健. 疏水型纳米TiO_2膜的制备、表征及耐蚀性能研究[J]. 电化学, 2004, 10(1): 65-69 |
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| 作者姓名： | 沈广霞 陈艺聪 林昌健 |
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| 作者单位： | 厦门大学固体表面物理化学国家重点实验室厦门大学化学系,厦门大学固体表面物理化学国家重点实验室厦门大学化学系,厦门大学固体表面物理化学国家重点实验室厦门大学化学系 福建厦门361005 ,福建厦门361005 ,福建厦门361005 |
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| 基金项目： | 国家自然科学基金，1130-K16002,20127302， |
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| 摘 要： | 以乙酰乙酸乙酯(EAcAc)作稳定剂和阻聚剂制备超微TiO2溶胶,用提拉法在AISI316L不锈钢上构筑一层纳米TiO2膜,经水热后处理有效消除膜中的龟裂现象,经氟硅烷基化制备成疏水型纳米TiO2膜.用胶粒分布仪测定溶胶颗粒分布,接触角测试仪测定表面疏水性、XRD、SEM表征膜的形貌、结构,电化学线性极化法测定疏水型纳米TiO2膜在模拟体液(Ringer溶液)中的电化学行为.结果表明:TiO2膜呈多孔有序纳米膜,颗粒分布均匀,粒径约为15～18nm,厚度约375nm,TiO2为锐钛矿型,疏水型纳米膜可使不锈钢腐蚀电流降低3个数量级,其耐腐蚀性大幅度提高.
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| 关 键 词： | 疏水性膜 316L不锈钢 耐腐蚀 sol_gel法 |
| 文章编号： | 1006-3471(2004)01-0065-05 |
| 收稿时间： | 2004-02-28 |
| 修稿时间： | 2003-09-16 |
Formation and Characterization of Water-repellent Nano TiO2 Coating and Studying its Anticorrosion Property |
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| Abstract: | Using ethyl acetoacetate (EAcAc) as a chelating agent, ultra fine TiO_2 sol is prepared. Nano-TiO_2 coatings are deposited on the 316L stainless steel by the dip-coating. Hydrothermal post-treatment leads to crack-free coatings. Meanwhile, the surface struture and properties was optimized. Self-assembly of Hetadecafluorodecyltrimethoxysilane (FSA-13) fabricates hydrophobic layers on the surface of the nano-TiO_2 coatings. Particle sizes of TiO_2 sol was analysed by zeta pals potential analysis, and surface morphology, structure and properties was characterized by contract angle instrument, XRD, and SEM technologies. The results have shown that the surface of coatings is porous, with approx. 375 nm thick, the particle diameters in the range of 18～20 nm evenly and TiO_2 is anstase. Electrochemical measurements show that the hydrophobic coatings have excellent anticorrosion properties. |
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| Keywords: | Hydrophobic coatings 316L stainless steel Corrosion Sol-gel method |
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