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Field Study of Weather Conditions Affecting Atmospheric Corrosion by an Automobile-Carried Atmospheric Corrosion Monitor Sensor
Journal of Materials Engineering and Performance ( IF 2.3 ) Pub Date : 2020-09-15 , DOI: 10.1007/s11665-020-05107-y
Yan-liang Huang , Dan Yang , Yong Xu , Dong-zhu Lu , Li-hui Yang , Xiu-tong Wang

The atmospheric corrosion of iron and steels not only affects the safety of infrastructures but also destroys the appearances and ornamental appreciations. The corrosivity of an environment can suggest such information that is useful for corrosion protection design and maintenance. The classical exposure test method is applicable to the evaluation of atmospheric corrosivity, but it takes a long time and can’t tell the evolution of corrosivity over a period of time. Atmospheric corrosion monitor (ACM) has been proved to be an effective method to investigate the corrosivity of atmospheric environment. However, unfortunately, the experiences of the authors of this paper show that the output by measuring current is interfered by the noise when the sensor is dry, and it is often difficult to differentiate it from the background signals, while the corrosion process is still going on the sensor surface. In this paper, a Fe-Zn ACM sensor was modified by connecting a larger resistor in parallel and measuring the electromotive force. Laboratory experiments and field tests revealed the influence of temperature, RH and rainfall on the ACM outputs, verifying the applicability of the modified sensor for the monitoring of the corrosivity variations in a region.



中文翻译:

汽车载大气腐蚀监测传感器对影响大气腐蚀的天气条件的现场研究

钢铁的大气腐蚀不仅影响基础设施的安全,而且破坏外观和观赏性。环境的腐蚀性会提示此类信息,这些信息可用于腐蚀防护设计和维护。经典的暴露测试方法适用于大气腐蚀性的评估,但是它花费的时间很长,并且无法确定一段时间内腐蚀性的变化。大气腐蚀监测仪(ACM)已被证明是研究大气环境腐蚀性的有效方法。但是,不幸的是,本文作者的经验表明,在传感器干燥时,通过测量电流的输出会受到噪声的干扰,并且通常很难将其与背景信号区分开来,而腐蚀过程仍在传感器表面上进行。在本文中,通过并联连接一个较大的电阻并测量电动势来修改Fe-Zn ACM传感器。实验室实验和现场测试揭示了温度,相对湿度和降雨对ACM输出的影响,从而验证了改进型传感器在监测区域腐蚀性变化方面的适用性。

更新日期:2020-09-16
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