Corrosion properties of cold spray Zn-25AI coating in marine environment
Zn-25A1 coatings were prepared by cold spray on mild carbon steel Q235. The coatings were studied by potentiodynamic polarization test, corrosion potentials and electrochemical impedance spectrum in natural seawater. The results show that the ECOrr of Zn-25A1 coating is -1.01 V (SCE) and the Ecorr of Q235 is -0.65V (SCE) at the beginning of the immersion. Self-corrosion potential of Zn-25A1 coating is lower than that of Q235. The coatings turn to activity anodic dissolution zone when the potential reaches -1.05V. The coatings changes to passivation zone after the potential reaches -1.0 IV and the current intensities increase slightly with the potential increasing quickly. Zn-25A1 coatings can provide lower protection potential and promising current to protect Q235 from corrosion.
corrosion cold spray coating marine
Qingjun Zhu Kai Wang
nstitute of Oceanology, Chinese Academy of Sciences, Qingdao School of Materials Science and Engineering, Shandong University, Jinan
国际会议
大连
英文
345-348
2011-10-19（万方平台首次上网日期，不代表论文的发表时间）