ZHANG Zicong,HAO Jianjun*,ZHAO Rongxing.Study on Preparation and Corrosion Performance of Aluminum Alloy Composite Graphene Film[J].Plating & Finishing,2021,(7):15-19.[doi:10.3969/j.issn.1001-3849.2021.07.003]
铝合金复合石墨烯薄膜的制备及腐蚀性能研究
- Title:
- Study on Preparation and Corrosion Performance of Aluminum Alloy Composite Graphene Film
- 文献标志码:
- A
- 摘要:
- 为提高铝合金的耐蚀性,对经过二次阳极氧化的铝合金氧化膜进行了石墨烯改性处理,得到了硅烷偶联剂KH550/石墨烯复合薄膜。傅里叶红外光谱仪分析表明,电化学剥离制备的石墨烯经过羟基化处理后再经过KH550改性处理,石墨烯的-COOH与KH550的-NH2发生了缩合反应,说明KH550成功接枝到石墨烯上;该复合膜经过电化学测试后发现,复合膜的腐蚀电流密度明显降低,从阳极氧化膜的3.829×10-4 A/cm2减小到1.325×10-6 A/cm2,而且中性盐雾试验结果(NSS试验)表明,改性后的铝合金阳极氧化石墨烯复合膜耐盐雾时间达到280 h。
- Abstract:
- In order to improve the corrosion resistance of aluminum alloy, the aluminum alloy oxide film after secondary anodic oxidation was modified with graphene, and a silane coupling agent KH550/graphene composite film was obtained.The analysis of the composite film by Fourier infrared spectrometer showed that the graphene prepared by electrochemical stripping was hydroxylated and then modified by KH550.The -COOH of the graphene and the -NH2 of KH550 had a condensation reaction, indicating that the KH550 was successful.Grafted onto graphene after electrochemical testing of the composite film, it was found that the corrosion current density of the composite film was significantly reduced, from 3.829×10-4 A·cm-2 of the anodized film to 1.325×10-6 A·cm-2。 The results of the neutral salt spray test (NSS test) show that the salt spray resistance time of the modified aluminum alloy anodic oxide graphene composite film reaches 280 hours.
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备注/Memo
收稿日期: 2020-11-10;修回日期: 2020-12-01
*通信作者: 郝建军,hjj68881@163.com