本文關(guān)鍵詞： 銅 自組裝膜 Cu_9S_5膜 C_(18)H_(36)O_2膜 BTESPT 掃描電化學(xué)顯微鏡 緩蝕　出處：《江蘇師范大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：銅在侵蝕性離子(Cl-)存在的情況下極易被腐蝕,因此研究金屬銅的腐蝕與防護具有重要的理論價值和實際意義。本文采用掃描電化學(xué)顯微鏡(SECM)結(jié)合電化學(xué)阻抗譜(EIS)和極化曲線(Tafel)等電化學(xué)方法,研究了混合自組裝膜、Cu_9S_5膜、C_(18)H_(36)O_2膜和BTESPT硅烷膜對銅在含氯離子溶液中腐蝕的抑制作用,主要研究內(nèi)容如下:1.交流電處理自組裝膜對銅在NaCl溶液中緩蝕行為的影響對混合自組裝膜(α-氨基吡啶縮水楊醛希夫堿(HL)和十二烷基硫醇(DT))交流電處理后,用掃描電化學(xué)顯微鏡(SECM)結(jié)合Tafel和電化學(xué)阻抗譜(EIS)等電化學(xué)方法研究銅表面由于自組裝膜的腐蝕行為。實驗結(jié)果表明,當(dāng)交流電(AC)處理電位位于陰極區(qū)間時,緩蝕效率提高,電極表面點蝕動態(tài)過程受到抑制。主要原因是交流電通過還原銅表面氧化膜以及促進其電極表面配合物的形成,從而提高自組裝膜的緩蝕能力。2.Cu_9S_5膜和C_(18)H_(36)O_2膜對銅在NaCl溶液中腐蝕的抑制作用采用浸漬法在銅基底表面形成Cu_9S_5膜,然后經(jīng)過0.5wt%硬脂酸溶液處理,使其表面具有疏水性;采用自組裝的方法在銅表面形成C_(18)H_(36)O_2膜。本文利用電化學(xué)方法與XPS、EDS連用研究了Cu_9S_5膜和C_(18)H_(36)O_2膜在對銅緩蝕性能的影響,實驗結(jié)果表明Cu_9S_5與腐蝕介質(zhì)有關(guān),C_(18)H_(36)O_2與組裝時間有關(guān)。實驗結(jié)果表明Cu_9S_5膜和C_(18)H_(36)O_2膜的緩蝕效率分別可以達到92.9%和93.6%,均能較好的抑制銅的腐蝕。3.BTESPT硅烷膜對銅電極在NaCl溶液中腐蝕的抑制作用通過電化學(xué)方法和SEM研究了BTESPT硅烷膜對銅腐蝕的抑制作用。結(jié)果表明,銅的緩蝕效率取決于硅烷溶液的水解時間,水解時間越長,緩蝕效率越低。為了進一步提高硅烷膜的緩蝕效率,用0.5wt%十四酸溶液對硅烷膜進行改性,發(fā)現(xiàn)十四酸分子嵌入到硅烷膜的空間網(wǎng)狀結(jié)構(gòu)中,提高了硅烷膜的致密性和穩(wěn)定性,從而提高金屬硅烷膜的緩蝕效率。
[Abstract]:Copper is easy to be corroded in the presence of corrosive ion Cl-. Therefore, it is of great theoretical value and practical significance to study the corrosion and protection of copper. In this paper, scanning electrochemical microscope (SECM) combined with electrochemical impedance spectroscopy (EIS) and polarization curve (. Tafel) and other electrochemical methods. The inhibition of copper corrosion in chloride solution by BTESPT silane film and CSTL / S _ (18) H _ (18) / S _ (36) O _ (2) film were studied. The main contents of this study are as follows: 1. Effects of AC self-assembled films on corrosion inhibition behavior of copper in NaCl solution on mixed self-assembled films (偽 -aminopyridyl glycidyl Schiff base) and 12 alkyl mercaptan (. After AC treatment. The corrosion behavior of copper surface due to self-assembly was studied by means of scanning electrochemical microscope (SECM) combined with Tafel and electrochemical impedance spectroscopy (EIS). When the AC treatment potential is located in the cathode range, the corrosion inhibition efficiency is improved. The kinetic process of pitting corrosion on the electrode surface is inhibited mainly because of the alternating current through reducing the oxide film on the surface of copper and promoting the formation of the complex on the electrode surface. Thus improving the corrosion inhibition ability of the self-assembled films. 2. Cu9S5 and CSP _ (18) HSP _ 6). Inhibition of copper corrosion in NaCl solution by O _ 2 film Cu_9S_5 film was formed on the surface of copper substrate by impregnation method. The surface of stearic acid was hydrophobically treated with 0.5 wt% stearic acid solution. In this paper, we use the method of self-assembly to form the C _ S _ (18) H _ (th) S _ (36) O _ (2) thin film on the copper surface. The electrochemical method and XPS are used in this paper. EDS was used to study the effect of Cu_9S_5 film and C _ S _ 2O _ 2 film on copper corrosion inhibition performance. The experimental results show that Cu_9S_5 is related to corrosion medium. The results of the experiment show that the Cu_9S_5 membrane and the C / C / C / T / T / C / C / T / T / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C / C. The corrosion inhibition efficiency of O _ 2 film can reach 92.9% and 93.6% respectively. The inhibition effect of BTESPT silane film on the corrosion of copper electrode in NaCl solution was studied by electrochemical method and SEM. Inhibition. The results show. The corrosion inhibition efficiency of copper depends on the hydrolysis time of silane solution. The longer the hydrolysis time, the lower the corrosion inhibition efficiency. In order to further improve the corrosion inhibition efficiency of silane film, the silane film was modified with 0.5 wt% 14 acid solution. It is found that 14 acid molecule is embedded in the space network of silane film, which improves the densification and stability of silane film and improves the corrosion inhibition efficiency of metallic silane film.
【學(xué)位授予單位】：江蘇師范大學(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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