Composites of 8-hydroxyquinoline/nano-SiO_2 were prepared with nano-SiO_2 as carrier and8-hydroxyquinoline as modifier. Then the composistes were blended with epoxy resin to form the nanocomposite epoxy coating. The corrosion performance of the prepared composite coating was investigated by means of salt spray test and electrochemical impedance spectroscopy. Results show that composites of 8-hydroxyquinoline/nano-SiO_2 can improve the corrosion resistance of the epoxy coatings, among others the coating with...