海洋软管铠装层用钢的海水腐蚀行为

发布时间：2018-03-22 09:22

  本文选题：海洋软管　切入点：铠装层　出处：《东北大学学报(自然科学版)》2017年08期 　论文类型：期刊论文

【摘要】：通过浸泡实验研究了铠装层用钢在模拟海水环境下的腐蚀行为.实验结果表明,实验钢的微观组织由回火马氏体组成,同时在基体中观察到含铬的析出粒子;腐蚀速率随着腐蚀时间延长逐渐降低,最终实验腐蚀速率为0.068 9 mm·a~(-1).腐蚀行为分为三个阶段:快速下降阶段、平稳过渡阶段和缓慢下降阶段,试样表面的腐蚀产物主要为α-FeOOH,γ-FeOOH,Fe_3O_4,Fe_2O_3;随着腐蚀时间的增加,腐蚀产物结构更加密实且厚度更大,铬元素倾向于在腐蚀产物中聚集.
[Abstract]:The corrosion behavior of steel armor layer in simulated seawater environment studied by immersion test. The experimental results show that the microstructure of the steel is composed of tempered martensite, and observed precipitation of chromium in the matrix; the corrosion rate decreased with the lengthening of corrosion time, corrosion rate of the final experiment was 0.0689 mm - a~ (-1). The corrosion behavior is divided into three stages: rapid decline stage, smooth transition and slow stages, the corrosion product sample surface is mainly alpha -FeOOH, R -FeOOH, Fe_3O_4, Fe_2O_3; with the increase of etching time, the structure of corrosion products is more real and more encryption thickness, Cr tends to gather in corrosion products.

【作者单位】： 东北大学轧制技术及连轧自动化国家重点实验室;江苏科技大学材料科学与工程学院;
【基金】：国家高技术研究发展计划项目(2015AA03A501) 国家自然科学基金资助项目(51274063)
【分类号】：TE988.2
，

本文编号：1648032