PREPARATION AND ANTI-CORROSION PERFORMANCE OF ZINC PHOSPHATE NANOCRYSTALS BY ULTRASONIC–HYDROTHERMAL SYNERGISTIC ROUTE

The zinc phosphate nanocrystals were synthesized by the ultrasonic–hydrothermal synergistic route. The ultrasonic–hydrothermal synergistic route can not only decrease the size of the zinc phosphate material, but also improve the crystallinity of the product. The transmission electron microscopy (TEM) image showed that the needle-like zinc phosphate product was 200–300 nm in length and 70–80 nm in width. The anti-corrosion tests revealed that the salt atmosphere-resistant time about 1056 h was longer than 768 h common zinc phosphate materials in the market. The mechanisms of ultrasonic–hydrothermal synergistic route and anti-corrosion were discussed.