ISO 23449:2020 金属和合金的腐蚀 腐蚀测量用多电极阵列

标准编号：ISO 23449:2020

中文名称：金属和合金的腐蚀 腐蚀测量用多电极阵列

英文名称：Corrosion of metals and alloys — Multielectrode arrays for corrosion measurement

发布日期：2020-10

标准范围

本文件规定了使用多电极阵列测量金属和合金腐蚀，尤其是局部腐蚀的方法。它可以作为研究局部腐蚀起始和扩展过程的有力工具。它也是现场长期腐蚀监测的有用工具，尤其是局部腐蚀，以及获得高通量结果，以评估不同环境中具有不同成分和/或物理性质的金属，并筛选大量抑制剂。此外，可以通过多电极阵列评估异种金属配对的电流耦合电流和电位分布。多电极阵列可以在全浸式、薄膜式、喷雾式和交替式湿法中实现？干循环暴露。本文件不用于测量非电化学机制引起的腐蚀。

This document specifies the methodology of using multielectrode arrays for the measurement of the corrosion, especially localized corrosion, of metals and alloys. It can be used as a powerful tool for studying the initiation and propagation processes of localized corrosion. It is also a useful tool for long-term corrosion monitoring in the field, especially for localized corrosion, and for obtaining high throughput results for the evaluation of metals with different compositions and/or physical properties in different environments and the screening of a large number of inhibitors. Additionally, the galvanic coupling current and potential distribution of dissimilar metal parings can be assessed by multielectrode arrays. Multielectrode arrays can be implemented in full-immersion, thin-film, spray and alternating wet?dry cycle exposures.This document is not intended to be used for measurements of corrosion caused by a non-electrochemical mechanism.

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