封闭型耐蚀涂层的寿命预测模型研究

doi:10.11902/1005.4537.2023.383

中国腐蚀与防护学报

2024, Vol. 44

Issue (6): 1617-1624 CSTR: 32134.14.1005.4537.2023.383 DOI: 10.11902/1005.4537.2023.383

研究报告

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封闭型耐蚀涂层的寿命预测模型研究

禹文娟¹^,², 王天丛³, 赵东杨⁴, 向雪云³, 吴航³, 王文⁴(

)

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

Lifetime Prediction Model for Barrier-type Corrosion-resistant Coating

YU Wenjuan¹^,², WANG Tiancong³, ZHAO Dongyang⁴, XIANG Xueyun³, WU Hang³, WANG Wen⁴(

)

1. Shanghai Shipbuilding Technology Research Institute, Shanghai 200032, China
2. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
3. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
4. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

引用本文:

禹文娟, 王天丛, 赵东杨, 向雪云, 吴航, 王文. 封闭型耐蚀涂层的寿命预测模型研究[J]. 中国腐蚀与防护学报, 2024, 44(6): 1617-1624.
Wenjuan YU, Tiancong WANG, Dongyang ZHAO, Xueyun XIANG, Hang WU, Wen WANG. Lifetime Prediction Model for Barrier-type Corrosion-resistant Coating[J]. Journal of Chinese Society for Corrosion and protection, 2024, 44(6): 1617-1624.

全文: PDF(2128 KB) HTML

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。

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

Abstract：

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.

Key words： barrier corrosion-resistant coating electrochemical impedance cathodic delamination cyclic aging lifetime prediction

收稿日期: 2023-12-05 32134.14.1005.4537.2023.383

ZTFLH:

TG174

基金资助:工业和信息化部高技术船舶科研项目(MC-202003-Z01-02)

通讯作者: 王文，E-mail: wen@imr.ac.cn，研究方向为腐蚀与防护

Corresponding author: WANG Wen, E-mail: wen@imr.ac.cn

作者简介: 禹文娟，女，1990年生，硕士，工程师

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图1 阴极剥离试样EIS测量位置示意图

图2 阴极剥离宽度与涂层厚度、测试周期的拟合曲面

图3 经历9个测试周期后阴极剥离宽度计算值与涂层厚度的关系

表1 涂层电化学阻抗值与阴极剥离宽度值

表2 涂层电化学阻抗与阴极剥离宽度的线性相关性分析

图4 经历不同阴极剥离测试周期后涂层的附着力

表3 涂层厚度、电化学阻抗与测试时间

图5 电化学阻抗对数与涂层厚度、测试时间的拟合曲面

图6 涂层电化学阻抗(计算值)的对数与测试时间的关系

表4 预测寿命值与涂层目标使用寿命值比较

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