宫照亮,张伦凤,程路遥,韦钱,王雨竹,高秀华

• 1:东北大学轧制技术及连轧自动化国家重点实验室

摘要(Abstract)：

通过开展浸泡腐蚀实验和电化学腐蚀实验研究了海洋柔性立管用高强钢在高温海水环境中的腐蚀行为。通过分析实验钢的腐蚀速率、腐蚀产物物相组成、腐蚀产物形态特征以及不同腐蚀时间后实验钢动电位极化曲线,揭示了实验钢的高温海水腐蚀行为与机制。结果表明:随着腐蚀时间的延长,腐蚀速率先是快速下降随后缓慢下降并趋于稳定,稳定状态的腐蚀速率为0.071 mm/a。而基体表面附着的腐蚀产物的致密度则是随时间的延长不断增加,抑制了腐蚀过程中的电化学反应。钢中耐蚀元素Cr、Mo、Ni的添加不仅可以促进形成致密稳定的腐蚀产物层,还可提高基体的自腐蚀电位,降低自腐蚀电流,增强实验钢的耐蚀性。

关键词(KeyWords)： 柔性立管;高强钢;高温海水腐蚀;电化学腐蚀

Abstract:

Keywords:

基金项目(Foundation): 国家级大学生创新创业训练计划资助项目(201810145213);; 国家高技术研究发展计划项目(2015AA03A501)

作者(Author): 宫照亮,张伦凤,程路遥,韦钱,王雨竹,高秀华

DOI: 10.13289/j.issn.1009-6264.2018-0534

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