Influence of Temperature on Corrosion Behavior of 2A02 Al Alloy in Marine Atmospheric Environments

Min Cao; Li Liu; Lei Fan; Zhongfen Yu; Ying Li; Emeka E Oguzie; Fuhui Wang

doi:10.3390/ma11020235

Influence of Temperature on Corrosion Behavior of 2A02 Al Alloy in Marine Atmospheric Environments

Materials (Basel). 2018 Feb 3;11(2):235. doi: 10.3390/ma11020235.

Authors

Min Cao^{1

2}, Li Liu^{3

4}, Lei Fan⁵, Zhongfen Yu^{6

7}, Ying Li⁸, Emeka E Oguzie⁹, Fuhui Wang^{10

11}

Affiliations

¹ Corrosion and Protection Division, Shenyang National Laboratory for Material Science, Northeastern University, NO. 3-11, Wenhua Road, Heping District, Shenyang 110819, China. mcao12s@imr.ac.cn.
² Institute of Metal Research, Chinese Academy of Sciences, Wencui Road 62, Shenyang 110016, China. mcao12s@imr.ac.cn.
³ Corrosion and Protection Division, Shenyang National Laboratory for Material Science, Northeastern University, NO. 3-11, Wenhua Road, Heping District, Shenyang 110819, China. liliu@imr.ac.cn.
⁴ Institute of Metal Research, Chinese Academy of Sciences, Wencui Road 62, Shenyang 110016, China. liliu@imr.ac.cn.
⁵ Institute of Metal Research, Chinese Academy of Sciences, Wencui Road 62, Shenyang 110016, China. lfan10s@imr.ac.cn.
⁶ Corrosion and Protection Division, Shenyang National Laboratory for Material Science, Northeastern University, NO. 3-11, Wenhua Road, Heping District, Shenyang 110819, China. zfyu12s@imr.ac.cn.
⁷ Institute of Metal Research, Chinese Academy of Sciences, Wencui Road 62, Shenyang 110016, China. zfyu12s@imr.ac.cn.
⁸ Institute of Metal Research, Chinese Academy of Sciences, Wencui Road 62, Shenyang 110016, China. liying@imr.ac.cn.
⁹ Electrochemistry and Materials Science Research Laboratory, Department of Chemistry, Federal University of Technology Owerri, PMB 1526 Owerri, Nigeria. oguziemeka@yahoo.com.
¹⁰ Corrosion and Protection Division, Shenyang National Laboratory for Material Science, Northeastern University, NO. 3-11, Wenhua Road, Heping District, Shenyang 110819, China. fhwang@imr.ac.cn.
¹¹ Institute of Metal Research, Chinese Academy of Sciences, Wencui Road 62, Shenyang 110016, China. fhwang@imr.ac.cn.

Abstract

The corrosion behavior of 2A02 Al alloy under 4 mg/cm² NaCl deposition at different temperatures (from 30 to 80 °C) has been studied. This corrosion behavior was researched using mass-gain, scanning electron microscopy-SEM, laser scanning confocal microscopy-LSCM, X-ray photoelectron spectroscopy-XPS and other techniques. The results showed and revealed that the corrosion was maximal at 60 °C after 200 h of exposure. The increase of temperature not only affected the solubility of oxygen gas in the thin film, but also promoted the transport of ions (such as Cl^-), and the formation of protective AlO(OH), which further affects the corrosion speed.

Keywords: 2A02 Al alloy; NaCl deposit; marine atmospheric corrosion; temperature.