Effect of Al2O3 and NiO Nanoparticle Additions on the Structure and Corrosion Behavior of Sn—4% Zn Alloy Coating Carbon Steel

The application of a higher corrosion resistance coating modified with nano additions can effectively decrease or prevent from occurring. In the present work, novel method is successfully developed for modification carbon steel surfaces aiming high using Sn—4% Zn alloy/nanoparticle composite (NiO+ Al2O3) coating. coatings were deposed on direct tinning process that involved power mixture alloy along flux mixture. Regular and interface structures achieved by individual Al2O3 both NiO nanoparticle combined in Sn-Zn maximum thickness 70 ± 1.8 µm was nanoparticles Interfacial intermetallic layer decreased all used hybrid conditions. minimum about 2.29 0.28 Sn—Zn Polarization impedance measurements to investigate influence incorporated Al2O3, NiO, Al2O3/NiO passivation low-carbon (LCS) coated LCS sodium chloride solution. It found presence remarkably improved resistance. confirmed increased these following order: > Al2O3.