Arc sprayed Zn and Zn(1)5Al coatings were chosen to protect the metal ends of prestressed high-strength concrete (PHC) pipe piles against corrosion of salina soil in northern china and neutral meadow soil in northeast China.The corrosion behavior of the coated Q235 steel samples in two simulated soil solutions were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods.The experimental results show that the corrosion of the matrix Q235 steel in both simulated solutions is remarkably inhibited by Zn and Znl5A1 coatings.The corrosion products on Zn and Zn(1)5Al are thick,compact,firm and protective.The corrosion current density icorr of both Zn and Zn(1)5Al-coated samples is decreased evidently with corrosion time,and the charge transfer resistance Rct is increased greatly.The corrosion resistance indexes of Zn and Zn(1)5Al in simulated neutral meadow soil solution are more outstanding than those in salina soil.The corrosion resistance of Zn(1)5Al in salina soil is slightly superior to that of Zn.When the sprayed coatings are sealed with epoxy resin,the corrosion resistance of the coatings is further enhanced markedly.
参考文献
| [1] | A.K. Fisher;L. Bullen;D. Beal .The durability of cellulose fibre reinforced concrete pipes in sewage applications[J].Cement and Concrete Research,2001(4):543-553. |
| [2] | Y. MIYATA;H. NAKANO;M. Abe .Effectiveness of Polyethylene Coating for steel pipe piles[J].Materials Performance,2006(12):24-27. |
| [3] | C. W. Du;X. G. Li;P. Liang;Z. Y. Liu;G. F. Jia;Y. F. Cheng .Effects of Microstructure on Corrosion of X70 Pipe Steel in an Alkaline Soil[J].Journal of Materials Engineering and Performance,2009(2):216-220. |
| [4] | 林碧兰,路新瀛,李龙.PHC管桩金属端头在土壤模拟液中的腐蚀行为[J].中南大学学报(自然科学版),2011(02):434-440. |
| [5] | G. Vourlias;N. Pistofidis;G. Stergioudis .Ability of metallic coatings to protect low carbon steels from aqueous corrosion[J].Corrosion Engineering, Science and Technology,2008(2):163-172. |
| [6] | S. Papavinasam;M. Attard;B. Arseneult .STATE-OF-THE-ART OF THERMAL SPRAY COATINGS FOR CORROSION PROTECTION[J].Corrosion reviews,2008(2/3):105-146. |
| [7] | S. H. Lee;H. S. Lee;J. W. Kyung;C. S. Kang;M. H. Han .Anti-Corrosion Performance of Zn-Al Thermal Metal Spraying Method Using Steel Structures[J].Key engineering materials,2007(348/349):453-456. |
| [8] | D. Chaliampalias;G. Vourlias;N. Pistofidis;G. Stergioudis;E. K. Polychroniadis .A morphological and microstructural study of flame-sprayed zinc coatings on low-alloyed steels as a contribution to explaining their corrosion resistance[J].Physica Status Solidi, A. Applied Research,2008(7):1566-1571. |
| [9] | S. Kuroda;J. Kawakita;M. Takemoto .An 18-Year Exposure Test of Thermal-Sprayed Zn, Al, and Zn-Al Coatings in Marine Environment[J].Corrosion: The Journal of Science and Engineering,2006(7):635-647. |
| [10] | LIN Bi-lan,LU Xin-ying,LI Long.Corrosion behaviors of arc spraying single and double layer coatings in simulated Dagang soil solution[J].中国有色金属学报（英文版）,2009(06):1556-1561. |
| [11] | C. Cachet;F. Ganne;S. Joiret;G. Maurin;J. Petitjean;V. Vivier;R. Wiart .EIS investigation of zinc dissolution in aerated sulphate medium - Part II: zinc coatings[J].Electrochimica Acta,2002(21):3409-3422. |
| [12] | Tang N.;Gorecki G.;Vanooij WJ. .COMPARATIVE EIS STUDY OF PRETREATMENT PERFORMANCE IN COATED METALS [Review][J].Progress in Organic Coatings: An International Review Journal,1997(4):255-263. |
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