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Rapid Electrochemical Characterisation of Corrosion Properties of Aluminium Brazing Sheet by Stepwise Dissolution Measurement
Technical Paper
2001-01-1693
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
For aluminium heat-exchangers one of the most accepted corrosion tests is the SWAAT. It is widely used by both aluminium producers and manufacturers of heat-exchangers. However, in alloy development programmes, as well as in production environments even faster characterisation of corrosion properties of aluminium brazing sheet would be advantageous.
The Stepwise Dissolution Measurement (SDM), which is an electrochemical technique, was developed in our laboratory to enable rapid screening of corrosion properties of aluminium brazing sheet. Within approximately 6 hours it is possible to distinguish between Long Life (over 25 days SWAAT performance) and non Long Life materials. Cross section showed that the mode of attack in SDM is similar to the mode of attack in SWAAT exposure.
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Authors
Citation
Meijers, S. and de Wit, J., "Rapid Electrochemical Characterisation of Corrosion Properties of Aluminium Brazing Sheet by Stepwise Dissolution Measurement," SAE Technical Paper 2001-01-1693, 2001, https://doi.org/10.4271/2001-01-1693.Also In
References
- Wood R.A. Scott A.C. Harris J.F. “A corrosion resistant alloy for vacuum brazed aluminium heat exchangers” SAE paper no. 910591
- Qvarfort R. “New electrochemical cell for pitting corrosion testing”’ Corrosion Science 28 2 135 140 1988
- Scott A.C. Woods R.A. Harris J.F. “Accelerated corrosion test methods for evaluating external corrosion resistance of vacuum brazed aluminium heat exchangers” SAE paper no. 910590