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| The Influence of Deposition of Solid Particles on the Initial Atmospheric Corrosion of7B04 Aluminum Alloy |
| Received:July 27, 2016 Revised:September 05, 2016 |
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| DOI：10.7643/ issn.1672-9242.2016.05.026 |
| KeyWord:atmospheric corrosion solid particles Kelvin probe |
| Author | Institution |
| 高蒙 |
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| 孙志华 |
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| 刘明 |
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| 闫巍 |
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| 汤智慧 |
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| Abstract: |
| Objective To study the effect of deposition of NaCl, C and SiO2 on the initial atmospheric corrosion of 7B04 aluminum alloy. Methods Indoor accelerated testing of 7B04 with the deposition of three particles were carried out. weighting of corrosion products, corrosion morphology observe and electrochemistry testing were used to study the initial corrosion behavior on 7B04 aluminum alloy. Results After different exposure time, pitting were formed on 7B04 aluminum alloy with the deposition of NaCl and SiO2, which results in the increasing of weight gain; a smart amount pittings were found on 7B04 with deposition of C during the late of exposure, without much obvious weight gain; the potential distribution of 7B04 aluminum alloy with deposition of three different particles were asymmetrical, and changed with exposure time. Conclusion At 25℃ with relative humidity of 95%, the deposition of NaCl and SiO2 may accelerate atmospheric corrosion of 7B04 aluminum alloy, but C had a contrary results. |
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