本文選題：陽極氧化法 + 二氧化鈦氧化膜��； 參考：《中國海洋大學(xué)》2010年碩士論文

【摘要】： 伴隨著生產(chǎn)力的發(fā)展和科學(xué)技術(shù)的進(jìn)步,海洋與人類的關(guān)系已經(jīng)越來越密切,與此同時(shí),大量的金屬材料被應(yīng)用在海洋科技研究與工程開發(fā)項(xiàng)目中。然而由于海水的高鹽度及海洋氣候本身特征導(dǎo)致了金屬材料在海洋中的腐蝕相當(dāng)嚴(yán)重。如何制備出新型的海洋材料來有效的防止金屬在海水中的腐蝕成為當(dāng)前各國科研機(jī)構(gòu)研究的重要課題。本文在采用陽極氧化法制備出二氧化鈦氧化膜的基礎(chǔ)上,通過對其本身性質(zhì)檢測及其與高分子材料結(jié)合制備復(fù)合材料,旨在研究耐腐蝕薄膜的耐海水腐蝕性能,減緩材料表面腐蝕的發(fā)生,探索和研究出一種能夠應(yīng)用于海洋環(huán)境的耐腐蝕材料。 首先,我們使用硫酸作為電解液,以恒壓陽極氧化方式在鈦基體上制備二氧化鈦氧化膜,利用XRD表征了不同條件下制備的氧化物膜的結(jié)構(gòu),利用接觸角測量儀和掃描電鏡等測試方法研究了二氧化鈦氧化膜的親疏水性及其表面結(jié)構(gòu)；使用電化學(xué)阻抗、極化曲線進(jìn)行耐腐蝕性能分析。實(shí)驗(yàn)結(jié)果表明,陽極氧化制備出的二氧化鈦氧化膜具有較好的耐海水腐蝕性能,而二氧化鈦黑暗條件下特有疏水性能進(jìn)一步增加了氧化膜的耐腐蝕性。 其次,我們使用恒電位法在制備好的二氧化鈦氧化膜上聚合一層聚苯胺膜。使用SEM、接觸角測定儀檢測聚苯胺的表面形貌和疏水性能；使用電化學(xué)阻抗,極化曲線等電化學(xué)測試方法對其進(jìn)行耐腐蝕性能測試。實(shí)驗(yàn)結(jié)果表明,在弱堿性海水中,聚苯胺還原單元去摻雜,生成全氧化態(tài)聚苯胺,全氧化態(tài)聚苯胺擁有優(yōu)異的耐海水滲透和耐腐蝕性能,因此有效的增加對內(nèi)部金屬的保護(hù),這對降低金屬的腐蝕速率有顯著的作用。 第三,我們采用聚苯乙烯球作為表面修飾材料,在已經(jīng)生成好的二氧化鈦納米管氧化膜上制備出聚苯乙烯球/二氧化鈦納米管復(fù)合膜,使用接觸角測定儀和電化學(xué)阻抗,極化曲線測試方法來分別測試其疏水性和耐海水腐蝕性能。實(shí)驗(yàn)結(jié)果表明,疏水材料修飾的氧化膜表面能夠有效的阻止海水向氧化膜內(nèi)部的滲透,從而降低海水對氧化膜的腐蝕性能。
[Abstract]:With the development of productivity and the progress of science and technology, the relationship between ocean and human has become more and more close. At the same time, a large number of metal materials have been applied in marine science and technology research and engineering development projects. However, due to the high salinity of seawater and the characteristics of marine climate itself, the corrosion of metal materials in the ocean is very serious. How to prepare new marine materials to effectively prevent metal corrosion in seawater has become an important research topic in various countries. On the basis of anodic oxidation method, the properties of TIO _ 2 film and its composite materials were investigated in this paper. The purpose of this study was to study the corrosion resistance of corrosion resistant film to seawater. In order to slow down the occurrence of surface corrosion, a kind of corrosion resistant material which can be used in marine environment is explored and studied. First of all, we used sulfuric acid as electrolyte to prepare TiO2 film on titanium substrate by constant voltage anodic oxidation. The structure of oxide film was characterized by XRD under different conditions. The hydrophobicity and surface structure of TIO _ 2 film were studied by means of contact angle measuring instrument and scanning electron microscope, and the corrosion resistance was analyzed by electrochemical impedance and polarization curve. The experimental results show that the TIO _ 2 film prepared by anodic oxidation has good corrosion resistance to seawater, and the unique hydrophobicity of TIO _ 2 can further increase the corrosion resistance of the film under dark conditions. Secondly, we polymerize a Polyaniline film on the prepared TIO _ 2 film by potentiostatic method. The surface morphology and hydrophobicity of Polyaniline were measured by means of SEM and contact angle tester, and the corrosion resistance of Polyaniline was tested by electrochemical impedance and polarization curves. The experimental results show that Polyaniline reduction unit is dedoped to form fully oxidized Polyaniline in weakly alkaline seawater, and the fully oxidized Polyaniline has excellent resistance to seawater penetration and corrosion resistance, so it can effectively increase the protection of internal metals. This has a significant effect on reducing the corrosion rate of metals. Thirdly, using polystyrene ball as surface modification material, we prepared polystyrene ball / titanium dioxide nanotube composite film on the formed TIO _ 2 nanotube oxide film, using contact angle tester and electrochemical impedance. Its hydrophobicity and corrosion resistance to seawater were tested by polarization curve test method. The experimental results show that the surface of the oxide film modified by hydrophobic material can effectively prevent the seawater from penetrating into the inner surface of the oxide film and thus reduce the corrosion resistance of the sea water to the oxide film.
【學(xué)位授予單位】：中國海洋大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2010
【分類號】：TG174.4

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本文編號：1926849