Modification effect of high-temperature ball milling condition to iron oxide corrosion protective coating

Grinding time and grinding rotation speed of iron oxide surface modification using high-temperature ball milling method were studied on the basis of the optimal grinding temperature. The modification effect of iron oxide improved with the grinding time extended from 1 h to 5 h and with the grinding rotation speed increased from 300 r/min to 516 r/min. The content of iron oxide to the corrosion performance of epoxy coatings was also investigated. The results show that the modified iron oxide can improve the corrosion performance of epoxy coating, and the optimal content of modified iron oxide in epoxy coating is about 10 wt.%.