丙炔醇对Q235钢在硫酸中的缓蚀作用
THE EFFECT OF PROPARGYL ALCOHOL ON THE CORROSION INHIBITION OF Q235 STEEL IN SULPHURIC ACID
摘 要
采用极化曲线和电化学阻抗谱方法研究了丙炔醇对Q235钢在硫酸中的缓蚀作用.结果表明,丙炔醇属于抑制阳极反应为主的缓蚀剂,且随着浓度的不同阳极脱附现象有所差别.丙炔醇的缓蚀效率在4 h时出现明显的浓度极值,24 h后浓度极值现象消失,这主要由于丙炔醇的缓蚀机理发生了变化.随着丙炔醇浓度的升高,缓蚀作用由吸附反应变为了以聚合反应为主.
Q235钢
EIS
缓蚀
Propargyl alcohol
Q235 steel
EIS
Inhibition
Abstract
Polarization curves and EIS method were employed to investigate inhibition behaviors of propargyl alcohol (PA) for Q235 steel in sulphuric acid.It was found that PA mainly suppressed the anodic reaction and the anodic desorption behavior of PA changed with the increase of PA concentration.After 4 h immersion extreme value phenomenon of concentration was observed.However,it disappeared after 24 h,which indicated some changes of the inhibiting mechanism.The inhibition behavior may be attributable to the polymerization of PA molecules instead of adsorption at high concentrations.
中图分类号 TG174.42
所属栏目 试验研究
基金项目
收稿日期 2006/4/4
修改稿日期
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引用该论文: LI Hai-hong,ZHAO Yong-tao,GUO Xing-peng. THE EFFECT OF PROPARGYL ALCOHOL ON THE CORROSION INHIBITION OF Q235 STEEL IN SULPHURIC ACID[J]. Corrosion & Protection, 2007, 28(3): 113～115
被引情况:
【1】余祖孝, "丙炔醇对AZ31镁合金阳极电化学行为的影响",腐蚀与防护 34, 989-990(2013)
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参考文献
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【2】Feng Y,Siowa K S,Teo W K,et al.The synergistic effects of propargyl alcohol and potassium iodide on the inhibition of mild steel in 0.5M sulfuric acid solution[J].Corrosion Science,1999,41:829-852.
【3】Gojic M.The effect of propargyl alcohol on the corrosion inhibition of low alloy CrMo steel in sulphuric acid[J].Corrosion Science,2001,43:919-929.
【4】王佳,曹楚南.缓蚀剂阳极脱附现象的研究-Ⅳ.缓蚀剂浓度极值现象[J].中国腐蚀与防护学报,1996,16(1):15-19.
【5】王佳,曹楚南,陈家坚,等.缓蚀剂阳极脱附现象的研究-Ⅰ.缓蚀剂阳极脱附现象[J].中国腐蚀与防护学报,1995,15(4):241-246.
【6】Epelboin I,Keddam M,Takenouti H,et al.Use of impedance measurements for the determination of the instant rate of metal corrosion[J].Journal of Applied Electrochemistry,1972,2(1):71-79.
【7】Lorenz W J,Mansfeld F.Determination of corrosion rates by electrochemical DC and AC methods[J].Corrosion Science,1981,21(9-10):647-672.
【8】闫丽静,何毓璠,林海潮,等.丙炔醇聚合股对铁在酸性溶液中的缓蚀作用[J].物理化学学报,1999,15(8):726-734.
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