Protection of Mg Alloys against Galvanic and Other Forms of Corrosion

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Galvanic corrosion is a particularly important form of corrosion for Mg alloys used in automobiles. Our research work focuses on corrosion protection using cost-effective Cr-free coatings. The top-tanking coatings are found to be effective in preventing general corrosion; some of these coatings are also good for reducing galvanic corrosion and stress corrosion. A practical approach for mitigating galvanic corrosion is to increase the electrolytic resistance between the coated steel and the Mg surfaces. This has been demonstrated in the case of a conversion coating plus a powder coat applied on the surface of a magnesium alloy and in the case of a thin Mylar isolation layer installed between the Mg and the steel surfaces.

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Periodical:

Materials Science Forum (Volumes 488-489)

Edited by:

W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo

Pages:

787-792

Citation:

W. Y. Zheng et al., "Protection of Mg Alloys against Galvanic and Other Forms of Corrosion", Materials Science Forum, Vols. 488-489, pp. 787-792, 2005

Online since:

July 2005

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$38.00

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