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- Title
Evaluation of Early Degradation and Corrosion Resistance of Modified Zinc Coating with SiO2 Nanoparticles.
- Authors
Xiao, Yi; Gu, Jianfeng; Dai, Nianwei; Zhang, Junxi
- Abstract
The electrochemical properties of zinc plate modified with different concentrations of nanoparticles in 3-(aminopropyl) triethoxysilane and 3-(trimethoxysilyl) propyl methacrylate solutions were investigated. Scanning electrochemical microscopy (SECM) was employed to examine the initial degradation of the samples in the electrolytes. The morphologies of passive films formed before and after immersion were characterised by means of scanning electron microscopy. Complementary electrochemical impedance spectroscopy (EIS) and neutral salt spray test techniques were carried out for further investigation. The results reveal that the films remained stable during the initial stage of immersion despite the occurrence of slow degradation. The SECM results together with those of EIS show that the performance of the films has been enhanced with increased SiO2<inline-graphic></inline-graphic> nanoparticle concentration, leading to enhance corrosion resistance in return by amount of formation of corrosion product.
- Subjects
ZINC coating; CORROSION resistance; SILICA nanoparticles
- Publication
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ), 2018, Vol 43, Issue 7, p3577
- ISSN
2193-567X
- Publication type
Article
- DOI
10.1007/s13369-017-3044-7