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| Initial Atmospheric Corrosion Behavior of Copper in the Presence of Ammonium Chloride Particles |
| Received:July 16, 2018 Revised:October 25, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.10.003 |
| KeyWord:copper atmospheric corrosion ammonium chloride |
| Author | Institution |
| LI Kun |
1. Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao , China;2. University of Chinese Academy of Sciences, Beijing , China; 3. Luzhong Secondary Specialized School, Zouping , China |
| LIU Xing-chen |
1. Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao , China;2. University of Chinese Academy of Sciences, Beijing , China |
| CHEN Zhuo-yuan |
1. Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao , China |
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| Abstract: |
| Objective To study the initial atmospheric corrosion behavior of copper in the presence of ammonium chloride particles. Methods SEM, EDS, FT-IR, XRD, titration method and electrochemical method were used to identify the corrosion process and corrosion products. Results The mass loss of copper increased with exposure time; Cu2O, Cu2(OH)3Cl and Cu2(OH)2CO3 were formed on the copper surface in the presence of ammonium chloride particles, among which Cu2O was the main corrosion product, and its weight accounted for more than 97% of the weight of the total corrosion products. Conclusion The presence of ammonium chloride can cause heavy corrosion to copper and the corrosion of copper becomes more severe with the exposure time. However, the corrosion rate becomes slow in the later period. |
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