CORROSION BEHAVIOUR OF X70 STEEL IN SIMULATED NITRIC ACID RAIN IN ACID SOIL

doi:1005-4537（2009）05-0376-06

J Chin Soc Corr Pro

2009, Vol. 29

Issue (5): 376-381 DOI: 1005-4537（2009）05-0376-06

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CORROSION BEHAVIOUR OF X70 STEEL IN SIMULATED NITRIC ACID RAIN IN ACID SOIL

XU Jin¹; WANG Haifeng²; WANG Xin³; SUN Cheng¹;WANG Fuhui¹; YU Changkun¹

1. State Key Laboratory for Corrosion and Protection;Institute of Metal Research; Chinese Academy of Sciences; Shenyang;110016
2. Qinghai Salt Lake Potash co. Ltd.; Geermu; 816000
3. Shenyang Broadcasting and Television University; Institute of Science and Technology; Biochemistry Department; Shenyang; 110003

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Abstract

The effects of simulated nitric acid rain in different pH value on X70 steel in acidic soil were studied by means of polarization curves、electrochemical impedance spectroscopy(eis)、x-ray diffraction(xrd)、scanning electron microscopy(sem) etc. The results revealed that simulated acid rain could heavily increase the corrosion rate of X70 buried; The results of X-ray showed that corrosion products mainly consist of Fe₂O₃, SiO₂; The results of SEM showed that with the increasing of pH value surface roughness was falling and quantities of microspores decreasing.

Key words: acid soil simulated nitric acid rain X70 steel

Received: 27 December 2007

ZTFLH:

TG174.3

Corresponding Authors: XU Jin E-mail: xujin@imr.ac.cn

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Cite this article:

XU Jin WANG Haifeng WANG Xin SUN Cheng WANG Fuhui YU Changkun. CORROSION BEHAVIOUR OF X70 STEEL IN SIMULATED NITRIC ACID RAIN IN ACID SOIL. J Chin Soc Corr Pro, 2009, 29(5): 376-381.

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https://www.jcscp.org/EN/1005-4537（2009）05-0376-06 OR https://www.jcscp.org/EN/Y2009/V29/I5/376

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