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      저자 : Shichen Lu (검색결과 2 건)
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        Influence of synergistic effect of phosphate on corrosion resistance of self-assembled superhydrophobic composite film on 6061 aluminum alloy surfaces

        Likui Wang,Shichen Lu,Feng Xie,Hanyu Liu,Jiaping Li,Wei Shang,Zhe Zhang,Yuqing Wen 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-

        Aluminum (Al) alloys are used in a wide range of applications due to their advantages. However, theexisting corrosion protection methods have insufficient protection ability and cannot achieve longtermprotection. In this paper, reactive protective film on the surface of aluminum alloys using 1-hydroxyethyl-1,1-diphosphonic acid (HEDP) molecules. Then, Lauric acid/Graphene (LA/rGO) film is usedto prepared on the surface of HEDP film. SEM, XRD, EDS, Raman, XPS and WCA were conducted to analyzephysical and chemical features of coatings. The total resistance of the film reaches 1.0 1020 Xcm2, in asalt spray test using 5wt% NaCl as the corrosion medium, corrosion spots appeared on day 28 with a corrosioninhibition efficiency of 99.99%. Theoretical studies with quantum chemical calculations haveshown that HEDP/LA/rGO composite films can be adsorbed on Al alloy surfaces through P-O-Al and PO-C chemical bonding. The influence of phosphate synergistic effect on the corrosion resistance of theself-assembled superhydrophobic composite film on the surface of 6061 aluminum alloy is discussed. This study presents a scientific and innovative design concept to develop coatings with excellent corrosionprotection for aluminum alloy, and then extend their application to certain areas.

      • KCI등재

        Construction of porous anodic oxide/Ce-MOFs film by induced electrodeposition and its corrosion resistance

        Yijun Cao,Likui Wang,Shichen Lu,Yuqing Wen,Wei Shang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.122 No.-

        Aluminum alloy has good expansion and low hardness. However, aluminum alloy is susceptible to corrosionin humid environments, limiting their application. In this experiment, we adopted an efficientand facile method to prepare porous anodic oxide (PAO) films and PAO/Ce-MOFs composite films. Itcan be characterized by SEM, EDS, FT-IR, XRD, XPS and other test methods. The corrosion resistance isstudied by neutral salt spray test and electrochemical test. Electrochemical data show that the resistanceof PAO/Ce-MOFs film is three orders of magnitude higher than that of aluminum alloy substrate, and thecorrosion current density is three orders of magnitude lower than that of aluminum alloy substrate,reaching 1.621 108 A/cm2. The corrosion resistance efficiency is 99.92%. The salt spray experimentshows that the film can maintain the corrosion resistance for 30d. The results show that Ce-MOFs coatingcan effectively improve the corrosion resistance of aluminum alloy. Therefore, this study provides a newapproach in the application of MOFs materials in the direction of anticorrosion.

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