Plating on Developed Al-Mg-Zn Alloy Casting and its Glossiness

Norihito Nagata; Makoto Hino; Koji Murakami; Hideki Kanetsuki; Sadao Kawai; Teruto Kanadani

doi:10.4028/www.scientific.net/MSF.783-786.216

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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Plating on Developed Al-Mg-Zn Alloy Casting and...

Plating on Developed Al-Mg-Zn Alloy Casting and its Glossiness

Abstract:

The purpose of this study is to develop an Al-Mg-Zn series aluminum alloy casting suitable for the plating. We evaluated the influence of the metal structure on the plating process of both AC4CH and a developed aluminum alloy and then examined their suitability to plating. With the AC4CH-T6 casting containing the silicon, it was difficult to obtain a smooth surface by pretreatment process because of the surface irregularity between the hard and chemically stable eutectic silicon and the aluminum matrix. On the other hand, with the developed silicon-free alloy casting, it was possible to produce a smooth surface by pretreatment process, and this glossiness was superior to that of the AC4CH-T6 casting after electroless Ni-P plating. Furthermore, the plating property of the developed casting was also superior to that of the AC4CH-T6 casting, because the zinc deposit on the developed casting from the zincate treatment became uniformly, depending on the uniform displacement reaction.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

216-221

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.216

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Online since:

May 2014

Authors:

Norihito Nagata*, Makoto Hino, Koji Murakami, Hideki Kanetsuki, Sadao Kawai, Teruto Kanadani

Keywords:

Aluminium Alloy, Casting, Glossiness, Suitability to Plating

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References

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