In addition, it was observed that the corrosion protection of nanocomposite coatings was improved as the clay loading was increased up to 4-2 wt% cerium nitrate.
Keywords Nanocomposite, Cerium nitrate, Salt spray, Impedance
12) have shown that the corrosion rate of galvanized steel treated by immersion in cerium nitrate solution is reduced by the solution's effect on the anodic and cathodic reactions.
Cerium nitrate was dissolved in ethanol solvent and MMT particles were dispersed into epoxy by mechanical agitation and sonication processes.
Cerium nitrate was dissolved in ethanol at 27[degrees]C, 1-3 g in 10 mL, and mixed for 15 min.
Table 1: Designation of formulations based on particle composition MMT Cerium nitrate 0CN 1CN 2CN 3CN 0C 0C0CN -- -- 0C3CN 2C -- 2C1CN 2C2CN 2C3CN 3C -- 3C1CN 3C2CN 3C3CN 4C 4C0CN 4C1CN 4C2CN 4C3CN
The compositions containing different amounts of clay and cerium nitrate were manufactured by two different steps: (I) a high-shear mixing method and (II) high-shear mixing plus sonication.
The neat epoxy, MMT clay, cerium nitric, and epoxy nanocomposites filled with 2, 3, and 4 wt% of MMT and 1, 2, and 3 wt% of cerium nitrate were examined, and the XRD patterns are shown in Fig.