A new high-throughput method for corrosion testing

A new, rapid, high-throughput corrosion testing method is described, together with a computerised optical analysis method for quantification of the corrosion data. The method is described and demonstrated for aluminium alloy AA2024-T3. The test solutions were 10−1–10−6 M NaCl and 0.1 M NaCl with 10−3–10−7 M K2Cr2O7. Up to 88 simultaneous corrosion tests can be carried out on a single 100 × 75 mm plate, including controls. Testing and analysis of all samples can be completed in approximately one day. Multiple tests on multiple plates are used to show the reproducibility of the technique.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► New high-throughput corrosion technique, demonstrated on AA2024-T3. ► Eighty-eight simultaneous inhibitor experiments can be tested and analysed in approximately one day. ► New semi-quantitative optical analysis technique. ► Good reproducibility on the same plate and between plates. ► Good agreement with standard mass-loss immersion experiments over both 24 h and 28 days.