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Is gold always chemically passive? Study and comparison of the epoxy-amine/metals interphases

Aufray, Maëlenn and Roche, Alain André Is gold always chemically passive? Study and comparison of the epoxy-amine/metals interphases. (2008) Applied Surface Science, vol. 254 (n° 7). pp. 1936-1941. ISSN 0169-4332

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Official URL: http://dx.doi.org/10.1016/j.apsusc.2007.07.192

Abstract

When epoxy-amine liquid mixtures are applied onto metallic substrates (such as Al, Ti, Sn, Zn, Fe, Cr, Cu, Ag, Ni, and Au), concomitant amine chemisorption and metallic surface dissolution occur, leading to organo-metallic complex formation. The interphase formation was studied, using two different amines as hardener (IsoPhoroneDiAmine and EthyleneTriAmine). If the complex concentration within the liquid amine or epoxyamine prepolymer was higher than its solubility limit, the complexes will crystallize. Sharp needle-like crystals were only observed with metal–IPDA organo-metallic complexes. A lot of metals are widely used as reactive substrates with gold as a reference, which is considered chemically inert. It is misleading, since it will be shown in this article that gold reacts with amine, just as the other metals.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S0169433207011403
HAL Id:hal-00867043
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Institut National des Sciences Appliquées de Lyon - INSA (FRANCE)
Other partners > Université Claude Bernard-Lyon I - UCBL (FRANCE)
Other partners > Université Jean Monnet - St Etienne (FRANCE)
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Deposited By: Maelenn AUFRAY
Deposited On:27 Sep 2013 13:40

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