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A New Evaluation Method for the Measurement of Internal Corrosion Resistance in Braze Clad Alloys
Technical Paper
2002-01-0388
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Historically, the development of brazing alloys for heat exchangers has focused on improving mechanical properties, improving external corrosion resistance and retaining good brazeability. Recently, the interest has been in the measurement of internal corrosion resistance and the development of aluminum alloys that will provide good internal corrosion resistance. Previously, testing to determine the internal corrosion resistance was performed on full size units. Herein is a description of an internal corrosion test loop, which has been designed and manufactured for testing internal corrosion resistance on small coupons of material. The test results for the coupons have been compared to those of a full size radiator that was exposed simultaneously with the coupons in the same corrosion test loop. The similarity between the results validates the ability of the system to test sheet specimens prior to production trials.
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Johnson, G., Connor, Z., Stauver, H., and Murty, G., "A New Evaluation Method for the Measurement of Internal Corrosion Resistance in Braze Clad Alloys," SAE Technical Paper 2002-01-0388, 2002, https://doi.org/10.4271/2002-01-0388.Data Sets - Support Documents
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References
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- Marshall G.J. Flemming A.J.E. Gray A. Llewellyn R. Development of a Long Life Aluminium Brazing Sheet Alloy with Enhanced Mechanical Performance SAE Paper 940505 1994
- Garcia J.J. Twichell D.J. Internal Corrosion / Erosion Testing of Welded Aluminium Radiator Tubes for Passenger Cars and Heavy Duty Trucks, Paper C 496 / 071 / 95 IMech E 1995 257 265
- Krishnakumar R. Kroetsch K. Ahrens R. Laboratory Techniques and Tube Alloy Ranking to Improve Internal Corrosion Resistance of Automotive Radiators SAE Paper 980056 1998
- Hindin B. “Internal Corrosion Resistance of Braze Sheet Alloys and CA15 and CA73 Radiators” Battelle Report No. Braze 0597-BATT 1997