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中国腐蚀与防护学报  2014, Vol. 34 Issue (2): 125-130    DOI: 10.11902/1005.4537.2013.102
  研究报告 本期目录 | 过刊浏览 |
糖苷对碱性溶液中钢筋表面钝化膜性能的影响
周欣1, 陈韧1, 杨怀玉2, 王福会2
1. 辽宁科技学院冶金工程学院 本溪 117022;
2. 中国科学院金属研究所 金属腐蚀与防护国家重点实验室 沈阳 110016
Effect of Pentaerythritol Glycoside on Performance of Passive Film Formed on Steel Rebar in Saturated Ca(OH)2 Solution Containing 3.5%NaCl
ZHOU Xin1, CHEN Ren1, YANG Huaiyu2, WANG Fuhui2
1. Department of Metallurgic Engineering, Liaoning Institute of Science and Technology, Benxi 117022, China;
2. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
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摘要: 

利用动电位极化和表面形貌观察技术,结合电容-电位曲线测量和Mott-Schottky分析,探讨了糖苷化合物对钢筋在含3.5%NaCl的Ca(OH)2饱和溶液中的缓蚀行为和表面钝化膜性能的影响。结果表明,糖苷阻锈剂的加入可有效减缓钢筋的腐蚀,促进钢筋表面的钝化,提高钢筋耐Cl-侵蚀能力;阻锈剂虽未改变钢筋表面钝化膜的半导体性能,但钝化膜内载流子密度却显著下降;钝化膜致密性分析表明,随糖苷浓度增大,钢筋表面钝化膜稳定性和致密性逐渐增强,耐蚀性提高。

关键词 糖苷阻锈剂钢筋钝化膜    
Abstract:The effect of PG (pentaerythritol glycoside) on the performance of the passive film on steel rebar in Ca(OH)2 saturated solution containing 3.5%NaCl, which was designed to simulate solutions in concrete pores, was investigated by mean of polarization curve measurement, Mott-Schottky analysis technique and surface analysis. The results showed that the PG could enhance the stability of the adsorption film formed on the metal surface. The curves of Csc-2 vs E of the steel rebar electrodes follow a linear Mott-Schottky (M-S) relationship with a positive slope in the range of potential from -0.5 to -0.1 V (vs SCE) in the M-S measurements, suggesting the passive film formed on the steel rebar surface was n-type semi-conductor. Moreover, with increasing concentration of inhibitor, the carrier density in passive film decreases, indicating that the passive film formed on steel rebar surface in the presence of PG was more compact and stable rather than that in the absence of inhibitor, and the corrosion resistance of passive film is gradually enhanced.
Key wordspentaerythritol glycoside    corrosion inhibitor    steel rebar    passivation film
收稿日期: 2013-07-03     
ZTFLH:  O646  
基金资助:辽宁省教育厅科学技术一般研究项目 (L2011226) 资助
通讯作者: 周欣,E-mail:Zhouxin@alum.imr.ac.cn   
作者简介: 周欣,女,1978年生,博士,研究方向为金属腐蚀与防护

引用本文:

周欣, 陈韧, 杨怀玉, 王福会. 糖苷对碱性溶液中钢筋表面钝化膜性能的影响[J]. 中国腐蚀与防护学报, 2014, 34(2): 125-130.
ZHOU Xin, CHEN Ren, YANG Huaiyu, WANG Fuhui. Effect of Pentaerythritol Glycoside on Performance of Passive Film Formed on Steel Rebar in Saturated Ca(OH)2 Solution Containing 3.5%NaCl. Journal of Chinese Society for Corrosion and protection, 2014, 34(2): 125-130.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2013.102      或      https://www.jcscp.org/CN/Y2014/V34/I2/125

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