一种新型螺纹钢低温缓蚀淬火剂
A New Type of Low Temperature Corrosion Inhibition Quenched Agent for Rebar
摘 要
为了提高螺纹钢的耐腐蚀性能,研制了一种新型低温缓蚀淬火剂.采用大气暴露腐蚀(AE)和干湿交替腐蚀(CCT)研究了淬火螺纹钢的耐腐蚀性能,采用电化学测试(ET)、FTIR、SEM和XRD探讨了耐腐蚀机理.结果表明,经缓蚀淬火剂淬火处理后螺纹钢的表面生成了约10 μm致密钝化膜;AE腐蚀产物由α-Fe2O3、γ-Fe2O3、α-FeOOH及硅酸铁化合物组成,组成成分未变但其相对含量发生了变化;缓蚀淬火处理使腐蚀反应的活化能由73.8 kJ/mol提高到了111.3 kJ/mol.螺纹钢的耐腐蚀性能得到了显著提高.
腐蚀
低温淬火
缓蚀机理
rebar
corrosion
quenched at low temperature
inhibition mechanism
Abstract
To improve the corrosion resistance of rebar,a new type of corrosion inhibition quenched agent was prepared.The corrosion resistances of quenching rebar were researched by atmospheric exposure test (AE) and wet/dry cyclic accelerated corrosion test (CCT).The inhibition mechanism was also investigated by electrochemical test,FTIR,SEM and XRD.The results showed that the dense passive film (thickness about 10 μm) was appeared on the surface of the rebar;the composition of the AE products consisted of α-Fe2O3,γ-Fe2O3,α-FeOOH and iron silicate,and the composition was unchanged but the relative content of each composition was changed;the activation energy of the corrosion reaction increased from 73.8 kJ/mol to 111.3 kJ/mol after quenched with the obtained agent.The corrosion resistance of rebar was significantly enhanced.
中图分类号 TG174.42 TG178
所属栏目 缓蚀剂专题
基金项目 合肥工业大学生创新基金(cxsy10062)
收稿日期 2014/3/25
修改稿日期
网络出版日期
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备注魏凤玉(1963-),教授,博士,从事化工传质与分离技术、化工环保技术及新材料开发等研究.
引用该论文: WEI Feng-yu,LI Wu-lin. A New Type of Low Temperature Corrosion Inhibition Quenched Agent for Rebar[J]. Corrosion & Protection, 2015, 36(2): 166
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【3】DE SOUZE F S,SPINELLI A.Caffeic acid as a green corrosion inhibitor for mild steel[J].Corrosion Science,2009,51:642-649.
【4】魏凤玉,胡芳,黄登銮.新型试剂快速冷却螺纹钢的耐蚀性能[J].材料热处理学报,2011,32(12):151-154.
【5】魏凤玉,李武林.一种螺纹钢复配缓蚀淬火剂及其使用方法:中国,201310142958.X[P].2013-7-17.
【6】魏洁,董俊华,柯伟.新型化学剂快速冷却热轧螺纹钢的防锈性能研究[J].腐蚀科学与防护技术,2009,21(5):468-471.
【7】SY/T5273-2000油田采出水用缓蚀剂性能评价方法[S].
【8】HOSSEINI S M A,AZIMI A.The inhibition of mild steel corrosion in acidic medium by 1-methyl-3-pyridin-2-yl-thiourea[J].Corrosion Science,2009,51:728-732.
【9】AHAMAD I,QURAISHI M A.Bis(benzimidazol-2-yl) disulphide:An efficient water soluble inhibitor for corrosion of mild steel in acid media[J].Corrosion Science,2009,51(9):2006-2013.
【10】FU P,LI H,SUN J,et al.Corrosive inhibition behavior of well-dispersible aniline/p-phenylenediamine copolymers[J].Progress in Organic Coatings,2013,76:598-595.
【11】DE LA FUENTE D,DAZ I,SIMANCAS J,et al.Long-term atmospheric corrosion of mild steel[J].Corrosion Science,2011,53(2):604-617.
【12】CASTA O J G,BOTERO C A,RESTREPO A H,et al.Atmospheric corrosion of carbon steel in colombia[J].Corrosion Science,2010,52(1):216-223.
【13】MARINHO J Z,MONTES R H O,DEMOURA A P,et al.Rapid preparation of α-FeOOH and α-Fe2O3 nanostructures by microwave heating and their application in electrochemical sensors[J].Materials Research Bulletin,2014(49):572-576.
【14】DAREZERESHKI E.Synthesis of maghemite (γ-Fe2O3) nanoparticles by wet chemical method at room temperature[J].Materials Letters,2010,64(13):1471-1472.
【15】WEI F Y,HU F.Corrosion resistance of water-cooled rebar quenched in a novel agent[J].Anti-Corrosion Methods and Materials,2013,60(4):179-184.
【16】DAREZERESHKI E,RANJBAR M,BAKHTIARI F.One-step synthesis of maghemite (γ-Fe2O3) nano-particles by wet chemical method[J].Journal of Alloys and Compounds,2010,502(1):257-260.
【17】KREHULA S,POPOVIC S,MUSIC S.Synthesis of acicular α-FeOOH particles at a very high pH[J].Materials Letters,2002,54:108-113.
【18】BOILY J F,PERSSON P,SJOBERG S.Benzenecarboxylate surface complexation at the goethite (α-FeOOH)/water interface:II.Linking IR spectroscopic observations to mechanistic surface complexation models for phthalate,trimellitate and pyromellitate[J].Geochimica and Cosmochimica Acta,2000,64(20):3453-3470.
【19】QING M,YANG Y,WU B S,et al.Modification of Fe-SiO2 interaction with zirconia for iron-based Fischer-Tropsch catalysts[J].Journal of Catalysis,2011,279(1):111-122.
【20】CARLSON L,SCHWERTMANN U.Natural occurrence of feroxyhite (δ′-FeOOH)[J].Clays and Clay Minerals,1980,28(4):272-280.
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