scholarly journals Influence of Crevice Thickness on Corrosion Behavior of API X80 Steel under Disbonded Coating in Acid Soil Environment

2021 ◽  
pp. 150808
Author(s):  
Bo Zhao ◽  
Keyword(s):  
Corrosion Behavior ◽  
Acid Soil ◽  
Soil Environment ◽  
X80 Steel ◽  
Disbonded Coating

scholarly journals Effect of Alternating Stray Current Density on Corrosion Behavior of X80 Steel under Disbonded Coating

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Qing-Miao Ding ◽  
Yong-Xiang Qin ◽  
Tao Shen ◽  
Yu-ning Gao
Keyword(s):  
Corrosion Behavior ◽  
Current Density ◽  
Corrosion Current Density ◽  
Corrosion Current ◽  
Negative Deviation ◽  
Stray Current ◽  
Cathode Area ◽  
X80 Steel ◽  
Wire Beam Electrode ◽  
Disbonded Coating

In this paper, the effect of alternating stray current (AC) density on the corrosion behavior of X80 steel under disbonded coating was studied by electrochemical methods, wire beam electrode (WBE) technology, and surface observation technology. The results showed that under the interference of different AC densities, the corrosion potential of X80 steel under disbonded coating underwent negative deviation, and the degree of negative deviation increased with the increase of AC density. The corrosion current density of X80 steel under disbonded coating with the action of 0~100 A/m2 AC density had few differences. While the corrosion current density of X80 steel with the action of 200~300 A/m2 AC density increased and the corrosion current density was higher than that under low AC density. The cathode area of the wire beam electrode under disbonded coating is mainly distributed outside and the edge of the gap between disbonded coating and X80 steel, while the anode area is mainly distributed inside the gap.

CORROSION BEHAVIOR OF X80 STEEL IN YINGTAN SOIL SIMULATED SOLUTION UNDER DISBONDED COATING

2012 ◽  
Vol 48 (12) ◽  
pp. 1530 ◽  
Author(s):  
Bo ZHAO ◽  
Cuiwei DU ◽  
Zhiyong LIU ◽  
Xiaogang LI ◽  
Jike YANG ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
X80 Steel ◽  
Disbonded Coating

The corrosion behavior and cracking susceptibility of the disbonded coating in the X80 steel pipeline by theoretical simulations and experimental measurements

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bo Zhao ◽  
Zhijuan Zhao ◽  
Dong Jin ◽  
Na Li ◽  
Linlin Liu ◽  
...  
Keyword(s):  
Diffusion Process ◽  
Corrosion Behavior ◽  
Electrode Reaction ◽  
Experimental Measurements ◽  
Accelerated Corrosion ◽  
Steel Pipeline ◽  
Corrosion Reaction ◽  
X80 Steel ◽  
Disbonded Coating ◽  
Theoretical Simulations

Abstract The corrosion behavior and cracking susceptibility of the disbonded coating in the X80 steel pipeline were investigated by different methods. The oxygen content in the trapped solution decreased rapidly with the formation of an airtight disbonded area. The airtight system affected the electrode reaction process, resulting in the inhibition of corrosion in the center of the disbonded area and the more refined surface finish of the sample. The bottom of the disbonded area underwent a relatively intense and accelerated corrosion reaction controlled by the diffusion process. The cracking susceptibility of the X80 steel firstly decreased and then increased in the pointing direction.

Corrosion Behavior of Pipeline Steel with Different Microstructures Under AC Interference in Acid Soil Simulation Solution

2019 ◽  
Vol 28 (3) ◽  
pp. 1698-1706 ◽  
Author(s):  
M. Zhu ◽  
Y. F. Yuan ◽  
S. M. Yin ◽  
G. H. Yu ◽  
S. Y. Guo ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Pipeline Steel ◽  
Acid Soil ◽  
Ac Interference

SOIL SPATIAL VARIABILITY RELATIONSHIPS IN A STEEPLY SLOPING ACID SOIL ENVIRONMENT

Soil Science ◽  
1996 ◽  
Vol 161 (5) ◽  
pp. 278-287 ◽  
Author(s):  
Douglas G. Boyer ◽  
Robert J. Wright ◽  
Charles M. Feldhake ◽  
David P. Bligh
Keyword(s):  
Spatial Variability ◽  
Acid Soil ◽  
Soil Environment ◽  
Soil Spatial Variability
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