Ce(NO_(3))_(3)和CeO_(2)纳米粒子对APTES膜耐腐蚀性的影响  

Effect of Ce(NO_(3))_(3)and CeO_(2)Nanoparticles on the Corrosion Resistance of APTES Coatings

作　　者：杨湘杰[1,2] 廖凯 杨颜 刘辉 蔡金趸[1,2] 李彤宇 YANG Xiangjie;LIAO Kai;YANG Yan;LIU Hui;CAI Jindun;LI Tongyu(School of Advanced Manufacturing,Nanchang University,Nanchang 330031,China;Key Laboratory of Near Net Forming in Jiangxi Province,Nanchang 330031,China)

机构地区：[1]南昌大学先进制造学院,南昌330031 [2]江西省高性能精确成形重点实验室,南昌330031

出　　处：《精密成形工程》2024年第5期164-173,共10页Journal of Netshape Forming Engineering

基　　金：江西省科技厅重点项目(HX202111260001)。

摘　　要：目的通过对铜箔进行硅烷化处理,增强铜箔的耐腐蚀性能。方法采用化学浸泡法在9μm电解铜箔表面制备γ-氨丙基三乙氧基硅烷偶联剂(APTES)硅烷膜层、Ce^(3+)/APTES膜层、CeO_(2)/APTES膜层和Ce^(3+)/CeO_(2)/APTES膜层,对改性硅烷膜试样与空白试样进行接触角对照实验,对硅烷表面润湿性进行表征。在3.5%(质量分数)NaCl溶液中,对空白样、单一硅烷膜层、Ce^(3+)/APTES硅烷膜层和Ce^(3+)/CeO_(2)/APTES硅烷膜层进行浸泡实验和电化学实验,研究改性膜层前后的耐腐蚀性能。通过扫描电子显微镜(SEM)观察膜层表面形貌,并利用傅里叶变换红外光谱(FTIR)和X射线光电子能谱(XPS)对纳米粒子结构进行分析,探讨改性膜层的钝化机理。结果Ce(NO_(3))_(3)/CeO_(2)/APTES复合膜层的接触角最大,接触角为106.6°,表现出最佳的疏水性。同时,其表面的腐蚀坑数量和面积最小。在盐水浸泡和电化学实验中,各试样的腐蚀电流密度随着浸泡时间的延长而上升,Ce^(3+)/CeO_(2)/APTES试样的腐蚀电位发生正移,具有较低的腐蚀电流密度,并且该试样具有最高的相角和最高的阻抗值,远高于Ce^(3+)/APTES试样。结论与单一硅烷膜层和仅分别添加Ce(NO_(3))_(3)、CeO_(2)2种缓蚀剂的膜层相比,Ce(NO_(3))_(3)/CeO_(2)/APTES复合膜层的防护效果有明显提升,且Ce^(3+)与CeO_(2)之间的协同作用大大提高了硅烷膜层的耐腐蚀性能。The work aims to silanize the copper foil to enhance its corrosion resistance.Theγ-aminopropyltriethoxysilane coupling agent(APTES)silane coating,Ce^(3+)/APTES coating,CeO_(2)/APTES and Ce^(3+)/CeO_(2)/APTES coatings were prepared on the surface of 9μm electrolytic copper foil by chemical immersion,and the contact angle control experiment between the modi-fied silane coating sample and the blank sample was carried out to characterize the surface wettability of the silane.Blank sam-ples,single silane coatings,Ce^(3+)/APTES silane coatings and Ce^(3+)/CeO_(2)/APTES silane coatings were immersed in 3.5wt%NaCl solution and electrochemical experiments were carried out to study the corrosion resistance of the coatings before and after the modification.The surface morphology of the modified coatings was observed by scanning electron microscopy(SEM),and the structure of the nanoparticles was analyzed by Fourier transform infrared spectroscopy(FTIR)and X-ray photoelectron spec-troscopy(XPS)to explore the passivation mechanism of the modified coatings.The Ce(NO_(3))_(3)/CeO_(2)/APTES composite coating had the largest contact angle of 106.6°,showing the best hydrophobicity.At the same time,the number and area of corrosion craters on the surface were the smallest,and the corrosion current density of each sample increased with the increase of immer-sion time in the brine immersion and electrochemical experiments,and the corrosion potential of the Ce^(3+)/CeO_(2)/APTES sample was positively shifted.The sample had a lower corrosion current density and the highest phase angle and the highest impedance value,much higher than that of Ce^(3+)and CeO_(2).Compared with the single silane coating and the coating with only two kinds of corrosion inhibitors Ce(NO_(3))_(3)and CeO_(2),the protective effect of Ce(NO_(3))_(3)/CeO_(2)/APTES composite coating is obviously im-proved,and the synergistic effect between Ce^(3+)and CeO_(2)greatly improves the corrosion resistance of silane coating.

关 键 词：γ-氨丙基三乙氧基硅烷偶联剂(APTES) 缓蚀剂 复合膜层 协同作用 耐腐蚀性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]