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Measuring corrosion rates: A novel AC method based on processing and analysing signals recorded in the time domain

机译:测量腐蚀速率:一种基于处理和分析时域中记录的信号的新型交流方法

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摘要

In this work, a novel method for the determination of instantaneous corrosion rates i_(corr) is proposed. It relies on recording the current response in the time domain upon imposing an AC voltage signal, and a computational procedure to remove non-faradaic currents and to analyse the data. The method was applied to steel in stirred, unstirred, and sand-filled 1 M KCl; the resulting i_(corr) compared well with different conventional techniques. The proposed method is robust, non-destructive and fast. In addition to i_(corr), it provides also an estimate of the capacitance and Tafel slopes (thus, no assumption on constant B is required).
机译:在这项工作中,提出了一种确定瞬时腐蚀速率i_(corr)的新方法。它依赖于在施加交流电压信号后在时域中记录电流响应,以及消除非法拉第电流和分析数据的计算程序。该方法适用于搅拌,未搅拌和充满沙子的1 M KCl中的钢。所得的i_(corr)与不同的常规技术进行了很好的比较。所提出的方法是鲁棒的,无损的和快速的。除了i_(corr),它还提供了电容和Tafel斜率的估计值(因此,不需要假设常数B)。

著录项

  • 来源
    《Corrosion science》 |2014年第12期|307-317|共11页
  • 作者单位

    ETH Zurich, Institute for Building Materials (IfB), ETH Hoenggerberg, CH-8093 Zurich, Switzerland,Swiss Society for Corrosion Protection (SGK), Technoparkstrasse 1, CH-8005 Zurich, Switzerland;

    ETH Zurich, Institute for Building Materials (IfB), ETH Hoenggerberg, CH-8093 Zurich, Switzerland,University of Cagliari, Department of Chemical and Geological Science, I-09100 Monserrato (CA), Italy;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    A. Carbon steel; B. EIS; B. Galvanostatic; B. Polarization; C. Kinetic parameters;

    机译:A.碳钢;B.EIS;B.恒电流;B.极化;C.动力学参数;

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