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Effect of PH values on Stress Corrosion Behavior of 5A06 Aluminum Alloy |
Received:March 28, 2018 Revised:April 03, 2018 |
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DOI: |
KeyWord:5A06 aluminum alloy; stress corrosion; polarization plot; slow strain rate tension |
Author | Institution |
konglingsen |
辽宁石油化工大学 石油天然气工程学院 |
wuming |
辽宁石油化工大学 石油天然气工程学院 |
wangxu |
辽宁石油化工大学 |
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Abstract: |
The stress corrosion behavior of 5A06 aluminum alloy in air and 3.5 wt% NaCl under different PH conditions was studied by slow strain rate tensile test (SSRT), potentiodynamic polarization technique and scanning electron microscope (SEM). The results show that when PH<9, a dense oxide film is gradually formed with the increase of PH value, and the PH value continues to increase to 9 when the film is broken down. With the increase of solution pH, corrosion rate of 5A06 aluminum alloy first decreased and then increased. Under near-neutral conditions, the corrosion rate and corrosion tendency were the least. |
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