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Galvanic Corrosion Prediction Technology for Aluminum Parts of Chassis

Article of Honda R&D Technical Review Vol.22 No.2


The time for evaluations can be reduced because it is now possible to predict corrosion by simulation of the depth of galvanic corrosion in aluminum chassis parts. Based on input of polarization curves conforming to the specific corrosion environment, this simulation technology is able to calculate the reduction in aluminum volume due to galvanic corrosion from the corrosion current, and to output the depth of corrosion. It can replace corrosion tests previously requiring 5000 hours with a simulation of approximately 20 minutes, making it possible to predict the depth of galvanic corrosion occurring in the market in a short period.


(1) http://www.mizuho-ir.co.jp/solution /research/digital/manufacture/fushoku/index.html, 2010/6/25
(2) Miyasaka, M.: Lecture on Corrosion and Corrosion Protection of Seawater Pumps - Part 1 Basics of Corrosion and Seawater Corrosion Characteristics -, EBARA ENGINEERING REVIEW, No. 220, P. 32 (2008)
(3) Aoki, S., Amaya, K., Miyasaka, M.: Boundary element analysis on corrosion problems, Shokabo, P. 17-39 (1998)
(4) JIS H2211: 1960, Aluminum alloy ingots for casting
(5) JIS G 4053: 2003, Low-alloyed steels for machine structural use
(6) Bousei-bousyokusouranhensyuuiinkai, Bousei-bousyokusouran, Sangyougijutsu service center, P. 99 (2000) (in Japanese)

Author (organization or company)

Takahiro MIZUKAMI(Automobile R&D Center)

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