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| Study on Organic Coatings of 30CrMnSiA Steel by Electrochemical Methods |
| Received:January 09, 2015 Revised:June 15, 2015 |
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| DOI：10.7643/issn.1672-9242.2015.03.019 |
| KeyWord:30CrMnSiA accelerated environmental spectrums organic coatings EIS |
| Author | Institution |
| ZHAO Kai |
1. Beijing Institute of Aeronautical Materials， Beijing ， China;2. Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation， Beijing ， China;3. AVIC Failure Analysis Center， Beijing ， China |
| HE Yu-huai |
1. Beijing Institute of Aeronautical Materials， Beijing ， China;2. Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation， Beijing ， China;3. AVIC Failure Analysis Center， Beijing ， China |
| LIU Xin-ling |
1. Beijing Institute of Aeronautical Materials， Beijing ， China;2. Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation， Beijing ， China;3. AVIC Failure Analysis Center， Beijing ， China |
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| Abstract: |
| Objective To study the anti-corrosion of 30CrMnSiA parts coated with only a layer of H06-076 primer. Methods Accelerated environmental spectrums were applied in the test, and the corrosion of 30CrMnSiA steel samples that coated with only a layer of H06-076 primer was studied by electrochemical impedance spectrum (EIS) technology. Results Corrosion occurred in 30CrMnSiA samples that coated with a layer of H06-076 primer after one period of accelerated environment spectrums . The failure of coatings measured by EIS fitted the corrosion of base-metal was observed. The 10 Hz phase change rules were in accord with the |Z|0.1 Hz measured by the EIS. Conclusion The anti-corrosion of 30CrMnSiA with only a layer of H06-076 primer was pretty weak and was tend to be corroded in the atmospheric environment. Corrosion behavior of metal coated by organic coatings can be effectively characterized and the performance of the coating can be accessed by the EIS method. |
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