Aggressive corrosion of steel infrastructure in marine environments

海洋环境中钢铁基础设施的严重腐蚀

• 批准号: DP140103388
• 负责人: Prof Robert Melchers
• 金额: $ 76.9万
• 依托单位: The University of Newcastle
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-03-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140103388
• 关键词: Aggressive; corrosion; steel; infrastructure; marine

Marine corrosion is known to be aggressive, but how aggressive it can be under long term exposures is the critical question for the safety and economics of much industrial infrastructure, including harbour, coastal and offshore oil industry facilities. Bacterial and microbiological activity is known to contribute. However, recent findings have observed very aggressive corrosion also under sterile and apparently benign conditions. No theory to explain these observations currently exists. A new hypothesis is proposed that in certain circumstances second-phase constituents of steels will facilitate autocatalytic corrosion under anoxic conditions. This project investigates the problem and explores mechanisms and conditions.

众所周知，海洋腐蚀具有侵蚀性，但在长期暴露下其侵蚀性如何，是许多工业基础设施（包括港口、沿海和近海石油工业设施）的安全和经济性的关键问题。已知细菌和微生物活性有所贡献。然而，最近的研究发现在无菌和明显良性的条件下也观察到非常严重的腐蚀。目前不存在解释这些观察结果的理论。提出了一个新的假设，即在某些情况下，钢的第二相成分将促进缺氧条件下的自催化腐蚀。本项目对问题进行调查，探索机制和条件。