Interactive influence of environmental factors on the pitting susceptibility of X120 pipeline steel studied by a uniform design method

YU Lu; HUANG Feng; LIU Jing; FAN Li-xia; LI Xiao-gang

doi:10.13374/j.issn1001-053x.2011.01.007

Volume 33 Issue 1

Jul. 2021

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YU Lu, HUANG Feng, LIU Jing, FAN Li-xia, LI Xiao-gang. Interactive influence of environmental factors on the pitting susceptibility of X120 pipeline steel studied by a uniform design method[J]. Chinese Journal of Engineering, 2011, 33(1): 40-46. doi: 10.13374/j.issn1001-053x.2011.01.007

Citation:

YU Lu, HUANG Feng, LIU Jing, FAN Li-xia, LI Xiao-gang. Interactive influence of environmental factors on the pitting susceptibility of X120 pipeline steel studied by a uniform design method[J]. Chinese Journal of Engineering, 2011, 33(1): 40-46. doi: 10.13374/j.issn1001-053x.2011.01.007

Citation:

YU Lu, HUANG Feng, LIU Jing, FAN Li-xia, LI Xiao-gang. Interactive influence of environmental factors on the pitting susceptibility of X120 pipeline steel studied by a uniform design method[J]. Chinese Journal of Engineering, 2011, 33(1): 40-46. doi: 10.13374/j.issn1001-053x.2011.01.007

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Interactive influence of environmental factors on the pitting susceptibility of X120 pipeline steel studied by a uniform design method

doi: 10.13374/j.issn1001-053x.2011.01.007

YU Lu¹,
HUANG Feng^1,2,
LIU Jing^{1
,
,},
FAN Li-xia¹,
LI Xiao-gang²

1. Key Laboratory of the Ministry of Education of China for Ferrous Metallurgy and Resources Utilization, School of Materials Science and Metallurgical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;
2. Corrosion and Protection Center, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2010-03-05

Abstract

Abstract

A uniform design experimental method was employed to discuss the interactive influence of Cl^- concentration, pH values and temperature on the pitting susceptibility of X120 pipeline steel in HCO₃^- + Cl^- solutions by a potentiodynamic scan technique. The experimental results indicate that Cl^-^- concentration, pH values and temperature have great effect on the corrosion and passive behavior of X120 pipeline steel in HCO₃^- + Cl^- solutions, and the influence order is as follows:Cl^- concentration has the greatest impact, then the combined action of Cl^- concentration and temperature, the third one is pH values, and temperature has the smallest impact. X120 pipeline steel has the least pitting susceptibility in the HCO₃^- + Cl^- solution whose C1 concentration is 0 mol·L^-1, pH value is 8.5 and temperature is 0℃.
- pipeline steel,
- environmental factors,
- pitting,
- potentiodynamic polarization