张宏亮,冯礼奎,宋小宁,钱洲亥,高立新,李凯帆,张大全.环己胺甲基脲气相缓蚀剂的缓蚀作用研究[J].表面技术,2018,47(10):45-50.
ZHANG Hong-liang,FENG Li-kui,SONG Xiao-ning,QIAN Zhou-hai,GAO Li-xin,LI Kai-fan,ZHANG Da-quan.Corrosion Inhibition of Cyclohexyl-aminomethyl-urea as Volatile Corrosion Inhibitor[J].Surface Technology,2018,47(10):45-50 |
| 环己胺甲基脲气相缓蚀剂的缓蚀作用研究 |
| Corrosion Inhibition of Cyclohexyl-aminomethyl-urea as Volatile Corrosion Inhibitor |
| 投稿时间：2018-03-21 修订日期：2018-10-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.10.006 |
| 中文关键词: 气相缓蚀剂 大气腐蚀 碳钢 吸附 挥发 预膜 |
| 英文关键词:volatile corrosion inhibitor atmospheric corrosion mild steel adsorption volatilization pre-film |
| 基金项目:上海市产业化标准项目（14DZ0500700） |
| 作者 | 单位 |
| 张宏亮 | 1.上海电力学院 环境与化学工程学院，上海 200090 |
| 冯礼奎 | 2.国网浙江省电力公司电力科学研究院，浙江 杭州 310014 |
| 宋小宁 | 2.国网浙江省电力公司电力科学研究院，浙江 杭州 310014 |
| 钱洲亥 | 3.杭州意能电力技术有限公司，浙江 杭州 310014 |
| 高立新 | 1.上海电力学院 环境与化学工程学院，上海 200090 |
| 李凯帆 | 1.上海电力学院 环境与化学工程学院，上海 200090 |
| 张大全 | 1.上海电力学院 环境与化学工程学院，上海 200090 |
|
| Author | Institution |
| ZHANG Hong-liang | 1. School of Environment and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China |
| FENG Li-kui | 2. Zhejiang Electric Power Research Institute of State Grid Corporation of China, Hangzhou 310014, China |
| SONG Xiao-ning | 2. Zhejiang Electric Power Research Institute of State Grid Corporation of China, Hangzhou 310014, China |
| QIAN Zhou-hai | 3. E. Energy Technology Co. Ltd, Hangzhou 310014, China |
| GAO Li-xin | 1. School of Environment and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China |
| LI Kai-fan | 1. School of Environment and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China |
| ZHANG Da-quan | 1. School of Environment and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China |
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| 中文摘要: |
| 目的 考察环己胺甲基脲（CAU）气相缓蚀剂的防腐蚀性能和成膜特性。方法 采用密闭空间挥发减量实验考察了CAU气相挥发能力，通过气相缓蚀能力实验和气相防锈甄别实验研究了它对碳钢的气相缓蚀保护作用，采用ACM电极技术考察了CAU预膜对碳钢电极腐蚀电化学行为的影响，通过XPS技术分析了其在碳钢表面的吸附成膜特性。结果 环己胺甲基脲的挥发性较小，72 h、50 ℃条件下密闭空间挥发减量大约为1.0%。经过20 h诱导期，气相缓蚀实验的碳钢试片无锈蚀。气相防锈甄别实验中，CAU可以使碳钢的腐蚀率从311.9 mg/(m2?h)降低至64.76 mg/(m2?h)，对碳钢缓蚀效率为79.24%。CAU预膜电极电化学阻抗谱呈现弥散效应，经过30 min的CAU预膜，碳钢电极的电荷传递电阻从1.32 kΩ?cm2 提高到3.81 kΩ?cm2。环己胺甲基脲可以挥发到达碳钢表面，通过分子中的N原子、O原子和Fe原子发生化学配位作用，吸附在碳钢表面形成保护膜。结论 环己胺甲基脲是性能优良的碳钢气相缓蚀剂。 |
| 英文摘要: |
| The work aims to investigate the anticorrosion properties and film formation properties of cyclohexyl-amino-ethyl-urea (CAU) as a volatile corrosion inhibitor (VCI). The gas volatility of CAU was investigated by volatility reduction ex-periment in confined space and the corrosion inhibition for mild steel was evaluated by volatile inhibiting ability (VIA) test and volatile inhibiting sieve (VIS) test. ACM scanning vibrating electrode technique was applied to study the effect of CAU on the corrosion inhibition of mild steel under a thin electrolyte layer. In addition, X-ray photoelectron spectrometry (XPS) was used to illuminate the mechanism of the film formation for CAU on the steel surface. The volatility of CAU was less and the volatile quantity was about 1.0% after 72 h in a closed space at 50 ℃. The steel specimens had no rust after 20 h volatilization period in the VIA test. CAU promoted the corrosion rate of mild steel to decrease from 311.9 mg/(m2?h) to 64.76 mg/(m2?h) in the VIS test and the corrosion inhibition rate of CAU on mild steel was 79.24%. Nyquist plots of EIS rendered a dispersion effect and the charge transfer resistance of mild steel increased from 1.32 kΩ?cm2 to 3.81 kΩ?cm2 after 30 min CAU pre-film process. CAU could volatilize to the surface of mild steel and formed chemical coordination on the surface through atoms N, O and Fe to form a protective film. CAU has good inhibition effect against the atmospheric corrosion of mild steel. |
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