Inhibitor Screening for Wet Sand Blasting Without Rust

In order to solve the problem of return rust on the surface of steel structure after wet blasting,the inhibiting effect on steel 20# in wet sand blasting liquid added with corresponding corrosion inhibitors were studied by weight loss test,electrochemical test,surface morphology observation and corrosion inhibition simulation test.The results showed that the appropriate concentration of corrosion inhibitor F,D and I was 2 g/L.Complex inhibitors D+F,D+I and F+I had good inhibition effect on the corrosion of steel 20#.After placing 4 h in atmosphere,no visible rust was found on steel 20# surface,indicating that 3 kinds of complex inhibitor could achieve the inhibition effect on steel 20#.