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  本文選題：刻蝕　切入點：陽極氧化　出處：《煙臺大學(xué)》2017年碩士論文

【摘要】：在金屬材料基體表面上制備超疏水且防腐蝕的表面是一種綠色、環(huán)保的防腐蝕技術(shù),超疏水表面具有超疏水、自清潔、低粘附、防覆冰、防生物粘附等優(yōu)良性能,在很多領(lǐng)域都有廣泛的應(yīng)用,超疏水表面的防腐蝕對金屬材料保護(hù)技術(shù)的發(fā)展有著重要的促進(jìn)意義。超疏水表面的制備通常是通過在材料的表面構(gòu)筑微納米二級結(jié)構(gòu),同時用低表面能物質(zhì)處理這樣的結(jié)構(gòu),從而使得材料表面具有超疏水的性能。而在這兩個因素中最為關(guān)鍵且更具研究意義的是材料表面的微納米結(jié)構(gòu)的構(gòu)筑。為提高Q235鋼基體的防腐蝕性能,本文從眾多的方法中選擇了三種不同的方法,成功地在Q235鋼基體上制備出超疏水表面,并詳細(xì)地探究了每種方法制備的超疏水表面的超疏水、防腐蝕等性能。本文研究的具體內(nèi)容如下所示:(1)結(jié)合化學(xué)刻蝕法和低表面能物質(zhì)修飾的方法在Q235鋼基體材料上制備了超疏水防腐蝕表面,探究刻蝕液中各個組分含量、低表面能物質(zhì)涂覆等對超疏水防腐蝕表面性能的影響。使用含有硝酸濃度為20%的刻蝕液處理后的Q235鋼材料表面,再涂覆低表面能物質(zhì)PDMS后,疏水效果達(dá)到最好,其與水的接觸角是163°。(2)結(jié)合物理氣相沉積法與低表面能物質(zhì)修飾的方法在Q235鋼基體上制備了超疏水防腐蝕表面,探究物理氣相沉積涂層的時間、低表面能物質(zhì)涂覆等對超疏水防腐蝕表面性能的影響。在相同的其他條件下,物理氣相沉積時間對Q235鋼材料表面粗糙度起主要作用,隨著物理氣相沉積電流時間的增加,粗糙度呈現(xiàn)先增大后穩(wěn)定的趨勢。通過電化學(xué)測試的數(shù)據(jù)和其他相關(guān)數(shù)據(jù)可以看到,多弧離子鍍技術(shù)的涂層的厚度的增加會增加Q235鋼表面的防腐蝕性能。(3)結(jié)合陽極氧化法和低表面能物質(zhì)修飾的方法在鋁2024基體材料上制備超疏水兼具備防腐蝕的材料表面,探究陽極氧化選擇的電解液組分以及陽極氧化的時間、低表面能物質(zhì)涂覆等對超疏水防腐蝕表面性能的影響。在相同的陽極氧化時間下,對鋁2024材料表面粗糙度起主要作用的是陽極氧化過程中電流密度,隨陽極氧化過程中電流密度的增加,粗糙度呈現(xiàn)出先增大后逐漸達(dá)到穩(wěn)定的發(fā)展趨勢。在相同的陽極氧化電流密度下,對鋁2024材料表面粗糙度起主要作用的是陽極氧化時間,隨著陽極氧化電流時間的增加,粗糙度呈現(xiàn)出先增大后逐漸達(dá)到穩(wěn)定狀態(tài)的發(fā)展趨勢。通過掃描電鏡(SEM)觀察樣品表面形貌、激光共聚焦顯微鏡(CLSM)觀察樣品三維形貌、利用接觸角測量儀測試了樣品與水的接觸角、運用XRD表征其組成、使用EDS表征元素含量及分布進(jìn)行了表征,使用Modulab電化學(xué)工作站測試處理后超疏水表面防腐性能。從而系統(tǒng)地研究了不同工藝對制備的金屬材料基體的超疏水表面及其防腐蝕性能的影響。
[Abstract]:The super-hydrophobic and anticorrosive surface prepared on the metal substrate is a green and environmentally friendly anticorrosion technology. The super-hydrophobic surface has excellent properties such as super hydrophobic, self-cleaning, low adhesion, anti-icing, anti-biological adhesion, etc. The anticorrosion of superhydrophobic surface is of great significance to the development of metal material protection technology. The preparation of superhydrophobic surface is usually through the construction of micro-nano secondary structure on the surface of material. At the same time, treating such structures with low surface energy substances, In order to improve the corrosion resistance of Q235 steel substrate, the material surface has superhydrophobic properties. In this paper, the superhydrophobic surface was successfully prepared on Q235 steel substrate by three different methods, and the superhydrophobic surface of the superhydrophobic surface prepared by each method was investigated in detail. The specific contents of this paper are as follows: (1) superhydrophobic corrosion resistant surface was prepared on Q235 steel substrate by chemical etching method and low surface energy material modification method, and the content of various components in the etching solution was investigated. The effect of low surface energy material coating on the surface properties of super hydrophobic corrosion resistant surface. The hydrophobic effect of Q235 steel treated by etching solution containing 20% nitric acid concentration and coated with low surface energy material PDMS is the best. The contact angle with water is 163 擄. 2) superhydrophobic anticorrosive surface was prepared on Q235 steel substrate by physical vapor deposition method and low surface energy material modification method. The time of physical vapor deposition coating was investigated. Under the same conditions, the physical vapor deposition time plays a major role in the surface roughness of Q235 steel, and with the increase of physical vapor deposition current time, the surface roughness of Q235 steel is increased with the increase of physical vapor deposition current time. Roughness shows a tendency to increase first and then stabilize. As can be seen from electrochemical data and other relevant data, The increase of the coating thickness of multi-arc ion plating technology will increase the corrosion resistance of Q235 steel surface. It can be combined with anodic oxidation method and low surface energy material modification method to prepare superhydrophobic and anticorrosive material surface on aluminum 2024 substrate. The effects of anodic oxidation selected electrolyte composition, anodizing time, coating of low surface energy substance on the surface properties of super hydrophobic corrosion resistant surface were investigated under the same anodic oxidation time. The main effect on surface roughness of aluminum 2024 is the current density in anodic oxidation process, which increases with the increase of the current density in anodic oxidation process. Under the same anodizing current density, the main effect on the surface roughness of aluminum 2024 is the anodic oxidation time, with the increase of anodizing current time. The surface morphology of the samples was observed by scanning electron microscopy (SEM) and laser confocal microscopy (CLSM). The contact angle between the sample and water was measured by contact angle measuring instrument. The composition of the sample was characterized by XRD, and the content and distribution of elements were characterized by EDS. The anticorrosion performance of superhydrophobic surface after treatment was tested by Modulab electrochemical workstation, and the effects of different processes on the superhydrophobic surface and corrosion resistance of the prepared metal substrate were systematically studied.
【學(xué)位授予單位】：煙臺大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG174.4

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本文編號：1675426