碳钢腐蚀大数据采集传感器在城市大气环境中适应性标定  

Adaptability Calibration of Big Data Acquisition Sensors for Monitoring Carbon Steel Corrosion in Urban Atmospheric Environment

作　　者：张帆 徐迪 杨小佳 王一品 陈昊 彭非凡 安江峰 程学群 李晓刚[4,5] ZHANG Fan;XU Di;YANG Xiaojia;WANG Yipin;CHEN Hao;PENG Feifan;AN Jiangfeng;CHENG Xuequn;LI Xiaogang(China Academy of Machinery Wuhan Research Institute of Materials Protection Co.,Ltd.,Wuhan 430030,China;Wuhan Materials Corrosion National Observation and Research Station,Wuhan 430030,China;Yuli Materials Corrosion National Observation and Research Station,Yuli 841500,China;Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China;Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]中国机械总院集团武汉材料保护研究所有限公司,武汉430030 [2]武汉大气淡水环境材料腐蚀国家野外观测科学研究站,武汉430030 [3]新疆尉犁大气环境材料腐蚀国家野外观测科学研究站,尉犁841500 [4]北京科技大学新材料技术研究院,北京100083 [5]北京科技大学北京材料基因组工程先进创新中心,北京100083

出　　处：《中国表面工程》2024年第2期1-15,共15页China Surface Engineering

基　　金：科技基础资源调查项目(2021FY100600)。

摘　　要：传统的腐蚀监测方法和腐蚀评估方法已经无法满足对数据量以及数据连续性的需要。大气腐蚀在线监测技术由于具有数据量大、数据连续及实时性等特点,已被广泛应用。然而,所得数据的准确性和适用性还须通过试验来做进一步验证。采用户外挂片以及电阻传感器和电偶传感器监测Q235碳钢在城市大气环境下的腐蚀速率,建立响应面模型,并采用温湿度耦合试验和干湿交替模拟试验进行验证。温湿度耦合试验和干湿交替模拟试验与户外挂片及响应面模型的腐蚀速率变化趋势一致,而温湿度耦合试验得到的腐蚀速率更接近于挂片得到的腐蚀速率。其中,电偶传感器得到的腐蚀速率值更接近于挂片的腐蚀速率值,说明城市大气环境下更适合使用电偶传感器。室内模拟试验中,温度升高会加速薄液膜下阴阳极的电极过程和化学反应,延长反应时间,表面腐蚀产物逐渐致密且均匀,一定程度上可以提高锈层的耐蚀性能。通过碳钢腐蚀传感器在城市大气环境中的适应性标定,可以深入探究大气环境中金属材料的腐蚀机理和过程,并准确评估腐蚀传感器在大气环境中的腐蚀行为,为研究者提供定量描述和分析腐蚀行为的基础数据。Traditional methods for monitoring and evaluating corrosion are affected by the extended experimental period and slow pace;thus,they fail to satisfy the demands for data quantity and data continuity.Techniques for online monitoring of atmospheric corrosion require large amounts of continuous and real-time data,and the obtained big data can be effectively simulated,calculated and modeled using computer software to clarify the metal corrosion process and achieve data sharing.Various techniques for detecting atmospheric corrosion have been widely used.However,the accuracy and validation of the data require further experimental verification.In this study,the corrosion rate of Q235 carbon steel in the urban atmosphere was monitored using an outdoor hanging plate,a resistance sensor,and a galvanic sensor.Subsequently,the response surface model was established,and its validity was confirmed via coupled temperature-humidity experiments and alternate drying-wetting simulation experiments.Confocal laser scanning microscope(CLSM),X-ray diffraction(XRD),scanning electron microscopy(SEM),and electrochemical testing were performed to investigate the effects of outdoor exposure and indoor simulation experiment on the surface rust layer of Q235 carbon steel.The results show that the corrosion rates of the resistance and galvanic sensors are 1.295 and 1.084 times the corrosion rate of the hanging plate,respectively.The variation trends of the corrosion rate of the sensor in the coupled temperature-humidity experiments and alternate drying-wetting simulation experiments are consistent with those of the outdoor hanging and response surface model.In the coupled temperature-humidity experiments,the corrosion rates recorded by the resistance and galvanic sensors are 1.136 and 1.018 times that of the hanging plate,respectively.In the low-temperature low-humidity environment,the corrosion rate of the galvanic sensor is similar to that of the hanging plate method.However,in the high-temperature high-humidity environment,the corrosion rat

关 键 词：电阻传感器 电偶传感器 响应面模型 温湿度耦合试验 干湿交替模拟试验 

分 类 号：TG17[金属学及工艺—金属表面处理]