封闭型耐蚀涂层的寿命预测模型研究  

Lifetime Prediction Model for Barrier-type Corrosion-resistant Coating

作　　者：禹文娟 王天丛 赵东杨[4] 向雪云 吴航 王文[4] YU Wenjuan;WANG Tiancong;ZHAO Dongyang;XIANG Xueyun;WU Hang;WANG Wen(Shanghai Shipbuilding Technology Research Institute,Shanghai 200032,China;College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China;School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China;Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]上海船舶工艺研究所,上海200032 [2]哈尔滨工程大学材料科学与化学工程学院,哈尔滨150001 [3]东北大学材料科学与工程学院,沈阳110819 [4]中国科学院金属研究所,沈阳110016

出　　处：《中国腐蚀与防护学报》2024年第6期1617-1624,共8页Journal of Chinese Society For Corrosion and Protection

基　　金：工业和信息化部高技术船舶科研项目(MC-202003-Z01-02)。

摘　　要：以封闭型耐蚀涂层为研究对象,通过阴极剥离试验得到了阴极剥离抗力与涂层厚度和时间的函数关系,分析、论证了电化学阻抗表征涂层耐蚀性能的有效性。研究了涂层在循环老化过程中的电化学阻抗变化规律,分析了电化学阻抗与涂层厚度、老化时间之间的数值关系,并建立了封闭型涂层的寿命预测模型。结果表明,涂层寿命预测值与涂层的目标使用寿命值具有可比性。For a barrier-type corrosion-resistant coating on Q235 carbon steel plate,the functional relationship of the cathodic delamination resistance versus the coating thickness and testing time may be acquired by means of cathodic delamination tests according to standards such as ISO 12944-6,ISO 11507 and ISO 9227 etc.The feasibility of using electrochemical impedance as an indicator for coating performance was analyzed and demonstrated.The variation of the electrochemical impedance of the coating during cyclic aging process was further assessed,and the numerical relationship of electrochemical impedance against the coating thickness and aging time was analyzed.Finally a lifetime prediction model for the coating was established.The results showed that the predicted lifetime shows a good comparability with the designed service lifetime of the barrier-type corrosion-resistant coating.

关 键 词：封闭型耐蚀涂层 电化学阻抗 阴极剥离 循环老化 寿命预测 

分 类 号：TG174[金属学及工艺—金属表面处理]