Degradation Behavior of Arc-Sprayed Zinc Aluminum Alloy Coatings for the Vessel Yongle in the South China Sea

Since thermally sprayed zinc and aluminum coatings were invented 100 years ago, they have realized extensive industrial applications for steel structure protection in a variety of fields nearly been proven to be effective reliable. However, it has seldom reported the ship industry China since many workers worry about risk rapid corrosion, especially harsh environments such as South Sea. In this paper, three kinds arc-sprayed tested choose best coating system application on research vessel Yongle by electrochemical behavior long-term atmospheric exposure experiment. The variation corrosion rate bonding strength was used clarify performance. results show that Zn15Al lowest (Rp larger than 2200 Ω·cm2) among 6.38 MPa after 5 year test. performance Sea indicates can provide excellent hull above waterline 3 It could predicted vast potential due its anticorrosion