Use of Electrical Resistance Probes for Studying Microbiologically Influenced Corrosion
Use of Electrical Resistance Probes for Studying Microbiologically Influenced Corrosion
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DOI：
10.5006/1.3287671
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发表时间：
2002-10
期刊：
影响因子：
1.6
通讯作者：
R. Royer;R. F. Unz
中科院分区：
文献类型：
--
作者：
R. Royer;R. F. Unz
研制了一套厌氧环境下金属微生物影响腐蚀(MIC)的实验系统。计算机接口的过程便于对并行运行的多个样品进行近乎实时的腐蚀监测。为了验证实验方法，随着时间的推移监测了电阻探头，并使用数据来估计腐蚀速度并确定探头表面的腐蚀是否均匀。在几个实验条件下，将极化测量确定的腐蚀速率估计值与根据电阻增加计算的腐蚀速率估计值进行了比较。线材样品的失效时间也被用来评估腐蚀的性质。电阻增加与失效时间之间的关系可作为局部腐蚀的一个可能的指标。
An experimental system was developed to study microbiologically influenced corrosion (MIC) of metals under an anaerobic environment. The computer-interfaced process facilitates near-real-time corrosion monitoring of many samples run in parallel. To validate the experimental approach, electrical resistance probes were monitored over time and the data were used to estimate the rate of corrosion and determine if the corrosion was uniform over the probe surface. Corrosion rate estimates, determined from polarization measurements, were compared to those calculated from resistance increases under several experimental conditions. Time-to-failure for wire samples was also used to evaluate the nature of the corrosion. The relationship between resistance increase and time to failure was used as a possible indicator of localized corrosion.