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| Inhibition and Synergistic Effect of Mixtures of Oxygen-containing Organic Compounds with Sodium Dodecyl Benzene Sulfate on Steel Rebar Corrosion in 3.5%NaCl Saturated Ca(OH)2 Solution |
| FENG Lijuan1, ZHAO Kangwen2, TANG Nan2, YANG Huaiyu1, WANG Fuhui1, SHANGGUAN Tie2 |
1. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
2. State Grid Jiangxi Electric Power Research Institute, Nanchang 330096, China |
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Abstract The inhibition and synergistic effect of three kinds of oxygen-containing organic compounds (i.e. sorbitol, glucose and ascorbic acid) with sodium dodecyl benzene sulfate (SDBS) on the corrosion of steel rebar in 3.5% NaCl (mass fraction) saturated Ca(OH)2 solution were investigated using linear polarization, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. Then the relevant mechanism of the corrosion inhibition and synergistic effect was discussed in terms of quantum chemical calculations and hard and soft acids and bases (HSAB) principle. The results indicated that the inhibition efficiency of the oxygen-containing compounds increased in the follow order: sorbitol＜glucose＜ascorbic acid, the highest inhibition efficiency of 96.9% was obtained for the inhibitor ascorbic acid, and had a positive correlation with their absolute hardness as Lewis bases in alkaline chloride solution. A significant synergistic effect appeared when three organic compounds mixed with SDBS in different portions, however, the synergistic effect of sorbitol with SDBS was the strongest.
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Received: 12 March 2013
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Cite this article:
FENG Lijuan,ZHAO Kangwen,TANG Nan,YANG Huaiyu,WANG Fuhui,SHANGGUAN Tie. Inhibition and Synergistic Effect of Mixtures of Oxygen-containing Organic Compounds with Sodium Dodecyl Benzene Sulfate on Steel Rebar Corrosion in 3.5%NaCl Saturated Ca(OH)2 Solution. Journal of Chinese Society for Corrosion and protection, 2013, 33(6): 441-448.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2013/V33/I6/441
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