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Synthesis and characterisation of composite nanoparticles of mesoporous silica loaded with inhibitor for corrosion protection of Cu-Zn alloy

2017; Elsevier BV; Volume: 120; Linguagem: Inglês

10.1016/j.corsci.2017.02.004

1879-0496

Xin Ma, Likun Xu, Wei Wang, Zhifeng Lin, Xiangbo Li,

ZnO doping and properties

A new type of composite nanoparticles (CNPs) was prepared by loading a typical inhibitor 1-hydroxybenzotriazole (HOBT) for corrosion protection of copper alloy in mesoporous silica nano-containers. The release kinetics of HOBT from CNPs in 3.5% NaCl solution was in conformity with the first order kinetic model. The open circuit potential monitoring, the morphology observation and the scanning Kelvin probe measurement of the Cu-Zn alloy in 3.5% NaCl solution with CNPs proved that a uniformly protective film was formed on the surface. Electrochemical impedance spectroscopy was employed to analyse the corrosion inhibition process of CNPs on the Cu-Zn alloy.