Abstract A nickel-rich conductive anti-corrosive coating (CACC) was fabricated to improve the corrosion resistance of the carbon steel grounding materials. The coating was tested using surface contact resistance measurement, electrochemical impedance spectroscopy (EIS) and surface characterization. The results indicate that the increase of the nickel powder content in the coating induces its electrical conductivity enhancement; the surface contact resistance is as low as 0.05 Ω/cm2 when the nickel powder content is 20%. The EIS data show that the anti-corrosive performance of the coating with 20% nickel powder content in three soil saline-alkali solutions (mild, moderate and severe) is higher than that with 40% nickel powder content, and the impedance of the coating decreases with the increase of the salt concentration. It is detected that 20% nickel powder content can achieve a good balance between low surface contact resistance and high corrosion resistance of the coating.

中文翻译：

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盐碱土壤溶液碳钢接地网富镍导电涂层的制备及性能评价

摘要 为提高碳钢接地材料的耐腐蚀性能，制备了富镍导电防腐涂层（CACC）。使用表面接触电阻测量、电化学阻抗谱 (EIS) 和表面表征测试涂层。结果表明，涂​​层中镍粉含量的增加导致其导电性增强；当镍粉含量为20%时，表面接触电阻低至0.05Ω/cm2。EIS数据表明，镍粉含量为20%的涂层在三种土壤盐碱溶液（轻度、中度和重度）中的防腐性能高于镍粉含量为40%的涂层，涂层阻抗随着盐浓度的增加而降低。