一种铈盐/单宁酸掺杂钼酸钠钝化液的电化学耐蚀性能实验研究

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关键词：硝酸铈；单宁酸；钼酸钠；电化学性能；钝化工艺中图分类号： 文献标志码：A 文章编号：2095-2945（2025）21-0060-04

Abstract：Inorder tofindagreen passvationprocess，acerumsalt/tannicaciddopedsodiummolybdatepassvationsolution wasprepared.Byadjustingthecontentofsodiummolybdateandpasivationtime，apassivationcomponentandprocesswere determind.Electrochemicaltestsshowedthat theoptimal passivationcomponentsunder thisexperimentalconditionswere： 20g/L （20 sodium molybdate， 1.5g/L cerium nitrate， 1.5g/L tannic acid， 20mL/L hydrogen peroxide， 5g/L malonic acid， 0.5g/L nickel sulfate，and the pH of the solution was adjusted to 3 with nitric acid.The passivation time is 60s .The corrosion resistance of the sample under this composition is the best， with a Log/Z/value of more than 3.7 Ω⋅cm2 ，a Rt value of 6946Ω⋅cm2 ，anda polarization resistance of ：

Keywords： cerium nitrate; tannic acid; sodium molybdate; electrochemical property; passivation process

钢材热镀锌工艺作为当前生产与生活中普遍应用的防腐技术，具有性价比高、价格低廉的特点[1-2]。（剩余5695字）