研究目的
Investigating the fabrication and optimization of rhodanine self-assembled monolayer (Rh-SAM) films on copper for corrosion inhibition in 3.5% NaCl solution.
研究成果
Rh-SAM films were successfully fabricated on copper specimens, showing high corrosion inhibition efficiency in 3.5% NaCl solution. The best results were obtained with methanol as the solvent. The films' protective ability is attributed to their compact and homogeneous structure.
研究不足
The study is limited to the use of rhodanine for SAM films on copper and its corrosion inhibition in 3.5% NaCl solution. The effects of other solvents or conditions were not explored.
1：Experimental Design and Method Selection:
Rh-SAM films were prepared on copper specimens in different solvents and characterized using SEM, EDX, AFM, FT-IR, and contact angle measurements. The corrosion inhibition efficiency was studied using EIS, PP, and LPR techniques.
2：Sample Selection and Data Sources:
Copper specimens with 99.98–99.99% copper content were used. The surface was prepared by mechanical abrasion, cleaning, and degreasing.
3：98–99% copper content were used. The surface was prepared by mechanical abrasion, cleaning, and degreasing. List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: SEM (JEOL 6510), EDX, AFM, FT-IR, contact angle measuring system, CHI 660D/CHI6096E A.C. Electrochemical Analyzers, Ag/AgCl reference electrode, platinum counter electrode.
4：Experimental Procedures and Operational Workflow:
Copper specimens were exposed to 10 mM Rh solutions in different solvents for 24 h. The films were characterized and their corrosion inhibition efficiency was tested in 3.5% NaCl solution.
5：5% NaCl solution. Data Analysis Methods:
5. Data Analysis Methods: The data were analyzed using electrochemical techniques and spectroscopic methods to determine the inhibition efficiency and film properties.
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SEM
JEOL 6510
JEOL
Characterization of surface morphologies of bare and film-modified electrodes.
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AFM
Examination of surface morphologies and roughness at nano- to micro-scale.
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FT-IR
Investigation of the interaction of the molecules with the metal surface.
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Contact angle measuring system
Investigation of hydrophobic/hydrophilic properties of the surfaces.
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CHI 660D/CHI6096E A.C. Electrochemical Analyzers
Carrying out electrochemical measurements under computer control.
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Ag/AgCl reference electrode
Reference electrode for electrochemical measurements.
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Platinum counter electrode
Counter electrode for electrochemical measurements.
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