In this paper

the first ionothermal synthesis silicon-based zeolite sodalite films on the surface of steel supports under ambient pressure in open vessels is presented. The prepared films were characterized by XRD and SEM. The crystalline srtructure was analyzed by XRD to identify the type and crystallinity of the film layer. The morphology

microstructure and thickness of the films were determined by SEM from the surface and cross-section. The results show we accurately prepared sodalite zeolite films with around 10 mm in thickness. It was found that the prepared films are continuous and defect-free. Simple salt fog test was used to confirm the anti-corrosion property of the prepared sodalite films. After 24 hours' salt fog test the steel support surface covered with sodalite films was eroded only 3%

while 90% of the uncovered steel surface was eroded during the same time. It was certified that the prepared sodalite films have very good effect on metal anti-corrosion.