Study on the effect of PbO on the passive behavior of alloy 690 in sodium hydroxide aqueous solution

金属学报(英文版), 2010, 23(5): 343-350.

^1, , ^2, , ^3, , ^4, , ^5,

1.Advanced Material and Technology Institute,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Corrosion and Protection(Ministry of Education of China),University of Science and Technology Beijing,Beijing 100083,China

2.Advanced Material and Technology Institute,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Corrosion and Protection(Ministry of Education of China),University of Science and Technology Beijing,Beijing 100083,China

3.Advanced Material and Technology Institute,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Corrosion and Protection(Ministry of Education of China),University of Science and Technology Beijing,Beijing 100083,China

4.Advanced Material and Technology Institute,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Corrosion and Protection(Ministry of Education of China),University of Science and Technology Beijing,Beijing 100083,China

5.Advanced Material and Technology Institute,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Corrosion and Protection(Ministry of Education of China),University of Science and Technology Beijing,Beijing 100083,China

基金项目: National Science and Technology Infrastructure Platforms Construction Projects(2005DKA10400) the National Natural Science Foundation of China(50871020)

Study on the effect of PbO on the passive behavior of alloy 690 in sodium hydroxide aqueous solution

Chengtao LI ^1, , Xuequn CHENG ^2, , Chaofang DONG ^3, , Zhijun JIA ^4, , Xiaogang LI ^5,

Keywords： Alloy 690

The corrosion behaviors of alloy 690 in 1 wt pct sodium hydroxide aqueous solutions with and without PbO were characterized by electrochemical measurements,including potentiodynamic polarization,electrochemical impedance spectroscopy and Mott-Schottky measurement.The results reveal that there is a great difference between the corrosion behaviors of alloy 690 in the two tested solutions.The corrosion current density in PbO-containing solution is higher than that in the solution without PbO,which may be attributed to the anodic dissolution of metallic lead deposited at the early stage of polarization.The electrochemical impedance of the specimen in PbO-free solution is higher than that in the solution containing PbO.The slope of the Mott-Schottky curve in Pb-containing solution decreases notably compared with that in the Pb-free solution,which can be interpreted by the chromium depletion in the duplex structure of passive films.

参考文献

[1]	R.W. Staehle;J.A. Gorman .Quantitative Assessment of Submodes of Stress Corrosion Cracking on the Secondary Side of Steam Generator Tubing in Pressurized Water Reactors: Part 1[J].Corrosion: The Journal of Science and Engineering,2003(11):931-994.
[2]	R. W. Staehle;J. A. Gorman .Quantitative Assessment of Submodes of Stress Corrosion Cracking on the Secondary Side of Steam Generator Tubing in Pressurized Water Reactors: Part 2[J].Corrosion: The Journal of Science and Engineering,2004(1):5-63.
[3]	R. W. Staehle;J. A. Gorman .Quantitative Assessment of Submodes of Stress Corrosion Cracking on the Secondary Side of Steam Generator Tubing in Pressurized Water Reactors: Part 3[J].Corrosion: The Journal of Science and Engineering,2004(2):115-180.
[4]	T. Sakai;N. Nakagomi;T. Kikuchi;K. Aoki;F. Nakayasu;K. Yamakawa .Mechanism of lead-induced stress corrosion cracking of nickel-based alloys in high-temperature water[J].Corrosion: The Journal of Science and Engineering,1998(7):515-523.
[5]	M. G. S. Ferreira;N. E. Hakiki;G. Goodlet;S. Faty;A. M. P. Simoes;M. Da Cunha Belo .Influence of the temperature of film formation on the electronic structure of oxide films of formed on 304 stainless steel[J].Electrochimica Acta,2001(24/25):3767-3776.
[6]	L. Peguet;B. Malki;B. Baroux .Influence of cold working on the pitting corrosion resistance of stainless steels[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2007(4):1933-1948.
[7]	M. Sanchez;J. Gregori;C. Alonso;J. J. Garcfa-Jareno;H. Takenouti;F. Vicente .Electrochemical impedance spectroscopy for studying passive layers on steel rebars immersed in alkaline solutions simulating concrete pores[J].Electrochimica Acta,2007(27):7634-7641.
[8]	C. M. Abreu;M. J. Cristobal;R. Losada;X. R. Novoa;G. Pena;M. C. Perez .Comparative study of passive films of different stainless steels developed on alkaline medium[J].Electrochimica Acta,2004(17/18):3049-3056.
[9]	N.E. HAKIKI;S. BOUDIN;B. RONDOT;M. DA CUNHA BELO .THE ELECTRONIC STRUCTURE OF PASSIVE FILMS FORMED ON STAINLESS STEELS[J].Corrosion Science,1995(11):1809-1822.

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

Study on the effect of PbO on the passive behavior of alloy 690 in sodium hydroxide aqueous solution

参考文献