Effect of Temperature on Pitting Corrosion Resistance of 316 Stainless Steel Coated by Cerium Oxide Film in 3.5% NaCl Solution

J. Mater. Sci. Technol. ›› 2008, Vol. 24 ›› Issue (05): 715-717.

Effect of Temperature on Pitting Corrosion Resistance of 316 Stainless Steel Coated by Cerium Oxide Film in 3.5% NaCl Solution

H.Hasannejad, T.Shahrabi, A.Sabour Rouhaghdam, M.Aliofkhazraei

收稿日期:2007-08-01 修回日期:2007-11-10 出版日期:2008-09-28 发布日期:2009-10-10
通讯作者: T. Shahrabi

Effect of Temperature on Pitting Corrosion Resistance of 316 Stainless Steel Coated by Cerium Oxide Film in 3.5% NaCl Solution

H.Hasannejad, T.Shahrabi, A.Sabour Rouhaghdam, M.Aliofkhazraei

Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran

Received:2007-08-01 Revised:2007-11-10 Online:2008-09-28 Published:2009-10-10
Contact: T.Shahrabi

摘要/Abstract

关键词: Cerium, oxide, Nano, films, Sol-gel, Heat, tre

Abstract: One of the main problems of stainless steel is its poor pitting corrosion resistance in the aggressive environment containing Cl-, such as seawater. In this paper we investigated the corrosion behavior of the 316 stainless steel coated by cerium oxide nanocoating prepared by sol-gel process. Potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were used to study the corrosion behavior of cerium oxide nanocoatings in 3.5% NaCl solution. The microstructure of the cerium oxide was examined by scanning electron microscopy (SEM) and the formed phases was identified by X-ray diffraction (XRD). The pitting corrosion resistance of the cerium oxide nanocoating was found to be improved after heat treatment of the cerium oxide nanocoating at 300°C for 30 min.

Key words: Cerium oxide nanocoating, Sol-gel, Pitting corrosion resistance, 316 stainless steel

H.Hasannejad, T.Shahrabi, A.Sabour Rouhaghdam, M.Aliofkhazraei. Effect of Temperature on Pitting Corrosion Resistance of 316 Stainless Steel Coated by Cerium Oxide Film in 3.5% NaCl Solution[J]. J. Mater. Sci. Technol., 2008, 24(05): 715-717.

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Effect of Temperature on Pitting Corrosion Resistance of 316 Stainless Steel Coated by Cerium Oxide Film in 3.5% NaCl Solution

Effect of Temperature on Pitting Corrosion Resistance of 316 Stainless Steel Coated by Cerium Oxide Film in 3.5% NaCl Solution

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