BS ISO 23449:2020
$142.49
Corrosion of metals and alloys. Multielectrode arrays for corrosion measurement
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 30 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 11 | 4 Principle 4.1 Multielectrode arrays 4.2 Coupled multielectrode array (CMA) |
| 12 | 4.3 Multielectrode array with closely packed electrodes for studying spatiotemporal behaviour of localized corrosion |
| 13 | 4.4 Coupled multielectrode array sensor (CMAS) 4.4.1 CMAS for corrosion monitoring |
| 14 | 4.4.2 CMAS used without polarization to measure corrosion rate at free corrosion potential 4.4.3 CMAS used to evaluate the effectiveness of cathodic protection and the effect of stray current |
| 15 | 4.5 Multielectrode arrays for high throughput measurements 4.6 Multielectrode arrays for other applications |
| 16 | 5 Instrumentation 5.1 Potential measurement 5.2 Coupling current measurement |
| 17 | 5.3 Effective coupling of individual electrodes 5.3.1 Coupling with multichannel ZVA |
| 18 | 5.3.2 Coupling with wires and measuring current with a single ZVA 6 Fabrication of multielectrode array 6.1 Electrode preparation 6.2 Number of electrodes |
| 19 | 6.3 Mounting of electrodes 6.4 Surface coating on electrodes for preventing crevice corrosion 6.5 Electrode configuration 6.6 Size of electrodes |
| 20 | 6.7 Spacing of electrodes for spatiotemporal studies 6.8 Spacing of electrodes for corrosion monitoring in oil and gas application 6.9 Size and spacing of the electrodes for high throughput studies 7 Test procedure |
| 21 | 8 Test report |
| 22 | Annex A (informative) Typical results from multielectrode array with closely packed electrodes for studying spatiotemporal behaviour of localized corrosion |
| 23 | Annex B (informative) Typical results from a CMAS for corrosion monitoring |
| 25 | Annex C (informative) Example reports |
| 26 | Bibliography |
