Is gold always chemically passive? Study and comparison of the epoxy-amine/metals interphases
Is gold always chemically passive? Study and comparison of the epoxy-amine/metals interphases
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DOI：
10.1016/j.apsusc.2007.07.192
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发表时间：
2008-01-30
影响因子：
6.7
通讯作者：
Roche, Alain Andre
中科院分区：
文献类型：
--
作者：
Aufray, Maelenn;Roche, Alain Andre
当将环氧-胺液体混合物施加到金属基材（如Al、Ti、Sn、Zn、Fe、Cr、Cu、Ag、Ni和Au）上时，伴随的胺化学吸附和金属表面溶解发生，导致有机金属络合物形成。使用两种不同的胺作为硬化剂（异佛尔酮二胺和二亚乙基三胺）研究了界面形成。如果液体胺或环氧-胺预聚物中的络合物浓度高于其溶解度极限，则络合物将结晶。尖锐的针状晶体，只观察到与金属IPDA有机金属配合物。许多金属被广泛用作反应性基底，金被认为是化学惰性的。这是误导，因为它将在这篇文章中显示，金与胺反应，就像其他金属一样。(C)2007 Elsevier B. V.保留所有权利。
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 DiEthyleneTriAmine). If the complex concentration within the liquid amine or epoxy-amine 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. (C) 2007 Elsevier B.V. All rights reserved.