| 姜洁,许甜,刘婧.海洋低盐度干湿交替环境不同金属镀层对D32钢保护特性研究[J].装备环境工程,2021,18(6):119-124. JIANG Jie,XU Tian,LIU Jing.Study on Protection Characteristics of D32 Steel with Different Metal Coatings in Ocean Low-salinity Wet-Dry Environment[J].Equipment Environmental Engineering,2021,18(6):119-124. |
| 海洋低盐度干湿交替环境不同金属镀层对D32钢保护特性研究 |
| Study on Protection Characteristics of D32 Steel with Different Metal Coatings in Ocean Low-salinity Wet-Dry Environment |
| 投稿时间：2020-12-10 修订日期：2021-01-20 |
| DOI：10.7643/issn.1672-9242.2021.06.018 |
| 中文关键词: 低盐度 干湿交替 金属镀层 D32钢中图分类号:TG174.4 文献标识码:A 文章编号:1672-9242(2021)06-0119-06 |
| 英文关键词:low salinity wet-dry cycle metal coating D32 steel |
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| 中文摘要: |
| 目的 探究一种适合于低盐度海域干湿交替环境金属腐蚀防护的金属镀层。方法 以胜利海域低盐度的腐蚀环境为研究对象，以D32钢为基体，通过直流脉冲电流电镀4种金属(Al、Mg、Cu和Zn)，镀层厚度为(30±1) μm，通过电化学测试和腐蚀形貌分析研究不同镀层金属的腐蚀动力学过程和点蚀特征，以确定最佳保护金属镀层。结果 在干湿交替和低氯离子浓度下(质量分数为2%)，4种电极均表现为活化腐蚀状态，均为阳极控制状态。4种金属镀层腐蚀电位从低到高为Cu<Zn<Al<Mg，腐蚀电流密度为Zn<Cu<Mg<Al，全面腐蚀速率为Al<Cu<Zn<Mg，点蚀速率为Mg<Zn<Cu<Al。结论 该研究条件下，在海洋低盐度干湿交替环境，D32钢可采用镀Zn方法来进行保护。 |
| 英文摘要: |
| To explore a metal coating for metal corrosion protection in ocean low-salinity wet-dry environment, the corrosion environment with low salinity in Shengli Sea area was taken as the research object, the corrosion behavior and pitting characteristic of D32 steel with different metal coatings (Al, Mg, Cu and Zn) of the thickness of (30±1) μm was studied through electrochemical test and corrosion morphology analysis, so as to determine the best protective metal coatings. The results showed that under the condition of dry and wet cycles and low chloride ion concentration (fraction mass is 2%), the four electrodes were in activated conditions and anode controlled. The corrosion potential of the four metal coatings was Cu<Zn<Al<Mg, the corrosion current density was Zn<Cu<Mg<Al, the total corrosion rate was Al<Cu<Zn<Mg, and the pitting corrosion rate was Mg<Zn<Cu<Al. Therefore, under the research conditions in this paper, Zn plating can be used to protect D32 steel in the ocean spray area with low salinity. |
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