毛礼娜,殷超凡,陈启明.HPAA 对 Q235 钢在碱性溶液中的缓蚀性能[J].表面技术,2015,44(11):79-86.
MAO Li-na,YIN Chao-fan,CHEN Qi-ming.Corrosion Inhibition of HPAA for Q235 Steel in Alkaline Solution[J].Surface Technology,2015,44(11):79-86
HPAA 对 Q235 钢在碱性溶液中的缓蚀性能
Corrosion Inhibition of HPAA for Q235 Steel in Alkaline Solution
投稿时间:2015-07-07  修订日期:2015-11-20
DOI:10.16490/j.cnki.issn.1001-3660.2015.11.013
中文关键词:  HPAA  缓蚀剂  复配缓蚀剂  腐蚀率  缓蚀率  响应面法
英文关键词:HPAA  corrosion inhibitor  compound corrosion inhibitor  corrosion rate  inhibition rate  response surface method
基金项目:国家自然科学基金(51474160)
作者单位
毛礼娜 武汉工程大学 化学与环境工程学院, 武汉 430073 
殷超凡 湖北省新型反应器与绿色化学工艺重点实验室, 武汉 430073 
陈启明 湖北省新型反应器与绿色化学工艺重点实验室, 武汉 430073 
AuthorInstitution
MAO Li-na School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China 
YIN Chao-fan Hubei New Reactor and Green Chemical Technology Laboratory, Wuhan 430073, China 
CHEN Qi-ming Hubei New Reactor and Green Chemical Technology Laboratory, Wuhan 430073, China 
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中文摘要:
      目的 运用响应面分析法考察缓蚀剂 2-羟基膦乙酸(HPAA)的缓蚀效果。 方法 通过单因素灵敏度分析法考察 pH 值、HPAA 质量浓度、温度对 Q235 钢腐蚀的影响,确定取值范围。 基于响应面优化分析法(RSM),根据单因素实验结果,采用中心组合设计原则(CCD)对质量浓度、温度、pH 值进行优化实验设计。 以 HPAA 的缓蚀率为响应值,采用 RSM 对响应数值进行方程回归,对得到的二次关联模型进行优化,并将优化的参数条件应用于复配缓蚀剂进行 SEM 和 EIS 分析。 结果 质量浓度、温度、pH 值的优化取值范围分别为 20 ~26 mg/ L,45 ~55 ℃和 8 ~10。 RSM 优化后参数为:质量浓度 23 mg/ L,温度 50 ℃ ,pH=9. 0,HPAA 的缓蚀率最优为 68. 68% 。 实验获得的缓蚀率为 68. 78% ,与预测值偏差为0. 15% 。 将优化的参数应用于缓蚀剂的复配, ρ(HPAA): ρ(Na2MOO4): ρ(Na2B4O7)= 0. 5:0. 3:0. 5 时,复配的缓蚀剂用量最少且缓蚀率最高可达到 93. 75% 。 此复配缓蚀剂在 SEM 图中光亮无腐蚀,并且在 EIS 谱中表现出纯电容性,阻抗最大、缓蚀率最高。 结论 响应面法和 SEM,EIS 结合运用在 HPAA 的缓蚀性能研究中是可行、准确、可靠的。
英文摘要:
      Objective To research the corrosion inhibition of 2-hydroxy-phosphate (HPAA) on Q235 steel by using response surface analysis. Methods By the method of single factor sensitivity analysis, the quality concentration of HPAA, temperature, pH value and other factors were investigated, and the optimal range of the three key factors was determined. Based on response surface optimization analysis (RSM), according to the results of single factor experiments, the optimal experimental design of mass concentration, temperature and pH value was carried out by using central composite design principle ( CCD). The response value of the HPAA was used for equation regression with RSM. Then the corresponding model of the quadratic associative model was obtained. After optimizing, the optimized parameters of the model were applied to SEM and EIS analysis of compound corrosion inhibitors. Results The single factor analysis determined the optimal values of the three key variables of mass concentration, temperature and pH value respectively were 20 ~ 26 mg / L, 45 ~ 55 ℃ and 8 ~ 10. The optimal concentration of HPAA was 23 mg / L, the temperature was 50 ℃ , and the pH value was 9, the inhibition rate of HPAA was 68. 68% . Under the conditions, the inhibition rate of the experimental results was 68. 78% with the deviation being only 0. 15% compared to the predicted value. The optimized parameters were used in the compound corrosion inhibitor. It was found that when the concentration ratio of HPAA : Na2 MOO4 : Na2 B4 O7 was 0. 5:0. 3:0. 5, the compound corrosion inhibitor dosage was the least with the maximum inhibition rate up to 93. 75% . The compound corrosion inhibitor showed no corrosion in the SEM diagram. The EIS spectrum showed a pure capacitance, and the impedance was the biggest with the highest inhibition rate. Conclusion The response surface method combined SEM and EIS applied in inhibiting corrosion of HPAA is feasible, accurate and reliable.
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