کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1469893 | 1510040 | 2012 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Zn–Al layered double hydroxides as chloride nanotraps in active protective coatings Zn–Al layered double hydroxides as chloride nanotraps in active protective coatings](/preview/png/1469893.png)
Zn–Al layered double hydroxides (LDHs) intercalated with nitrate anions are suggested as chloride nanotraps for organic polymeric coatings. The addition of such nanotraps to a polymer layer drastically reduces the permeability of corrosive chloride anions through the protective coatings. In solution, Zn(2)–Al–NO3 LDHs are responsive to the concentration of chlorides and the release of nitrates is accompanied by entrapment of chlorides, with the process governed by ion-exchange equilibrium. In particular, a coating modified with LDH–NO3 was found to exhibit significantly lower permeability to chlorides when compared to both unmodified and LDH–Cl-containing coatings, which proves the applicability of LDHs in delaying coating degradation and corrosion initiation.
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Journal: Corrosion Science - Volume 55, February 2012, Pages 1–4