深海环境下环氧系防腐涂层失效机制及寿命评价方法研究

项目名称： 深海环境下环氧系防腐涂层失效机制及寿命评价方法研究

项目编号： No.51271187

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 刘莉

作者单位： 中国科学院金属研究所

项目金额： 77万元

中文摘要： 未来基于经济、军事等领域的需求我国将向海洋环境全面发展。但目前深海环境下有机防护涂层研究甚少，许多基础问题亟待解决。本项目利用多种测试手段，从有机涂层界面问题入手，针对深海环境下，有机防护涂层的基础性问题进行深入、系统的自主研究。从涂层多种服役性能测试、界面信息实时观测、失效形态全面掌握等方面，深入探讨深海环境下有机涂层的界面失效机制，为深海环境用有机涂层的设计、制备提供理论和技术基础。在失效机制研究基础上开发电化学涂层性能测试技术，及基于失效机制建立全面理论寿命预测数学模型，为我国深海环境条件下涂层的现场监、检测技术开发及涂层服役寿命预测提供设计依据和技术支持。

中文关键词： 深海；有机涂层；失效；原位电化学监测；寿命预测

英文摘要： Extensive exploration of deep ocean resources and increase of martial demands are greatly hindered by the unique and special conditions in deep ocean environments, including relatively low temperatures, diverse dissolved oxygen levels, and high hydrostatic pressure. The use of organic coatings is one of the most important methods for materials corrosion protection in marine environments. From the foregoing, successful application of coatings for corrosion protection in deep ocean environments requires in-depth knowledge and understanding of the effect of high hydrostatic pressures on coating stability and general performance. However, at present, the studies of organic coating in the deep ocean have not received much attention. The study analysis the failure of epoxy organic coating in deep ocean environments compared with that under atmospheric pressure, using impedance measurements, gravimetric testing, adhesion testing and scanning electron microscopy (SEM) and so on. The failure mechanism is planning to be set up, and the environmental factors leading to the failure of organic coating and inner factors of organic coating during failure will be cleared, as the theoretical bases guiding on investigating new organic coatings. The in-situ electrochemical testing techniques will be assured based EIS measurements

英文关键词： Deep ocean；Organic coating；Failure；In-situ electrochemical monitoring；Life prediction