scholarly journals Corrosion Behavior of X70 and X80 Pipeline Steels in Simulated Soil Solution

2018 ◽  
pp. 6436-6450 ◽  
Author(s):  
Xinhua Wang ◽  
Keyword(s):  
Soil Solution ◽  
Corrosion Behavior ◽  
Pipeline Steels

Corrosion Behavior of Zn and Cu as Grounding Material in Shanbei Soil Solution

2013 ◽  
Vol 850-851 ◽  
pp. 1326-1330 ◽  
Author(s):  
Seng Wang ◽  
Shu Jun Gao ◽  
Zhi Zhong Li ◽  
Ya Bo Hu ◽  
Hong Liang Ji ◽  
...  
Keyword(s):  
Soil Solution ◽  
Corrosion Behavior ◽  
Galvanic Corrosion ◽  
Corrosion Current ◽  
Immersion Test ◽  
Copper Oxides ◽  
Stray Current ◽  
Test Technique ◽  
Current Test ◽  
Zn And Cu In

The corrosion behavior of typical grounding materials Zn and Cu in Shanbei soil solution was studied by immersion test technique, galvanic corrosion current measurement and simulated stray current test. The results showed that Zn was seriously corroded with the corrosion product of ZnCO3, while Cu was slightly corroded with the main rust of Cu2(OH)2CO3 and copper oxides. The corrosion of Zn was accelerated and Cu was protected when coupled them together. Stray current can significantly increase the corrosion process of both Zn and Cu.

Study on the corrosion behaviors of high-silicon chromium iron in acidic and alkaline soil solutions

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kechen Lv ◽  
Xinyu Yang ◽  
Tangqing Wu ◽  
Song Xu ◽  
Lanlan Liu ◽  
...  
Keyword(s):  
Soil Solution ◽  
Corrosion Behavior ◽  
Material Selection ◽  
Southern China ◽  
Acid Soil ◽  
Alkaline Soil ◽  
Content Type ◽  
Soil Solutions ◽  
High Silicon ◽  
Corrosion Pits

Purpose High-silicon chromium iron (HSCI) has been used in ground grids in southern China, while there was a lack of study on its corrosion behavior in this soil environment. The purpose of this paper is to discover the corrosion of HSCI in acidic and alkaline soil solutions. Design/methodology/approach The original defects on the HSCI surface were observed using optical microscopy, and the corrosion behavior of the HSCI in the acidic and alkaline soil solutions were jointly detected using electrochemical measurements and scanning electron microscopy/energy dispersive spectrometer. Findings The results showed the corrosion rates of the HSCI in the acidic and alkaline soil solutions were limited, and the high contents of Cr and Si in matrix was responsible for its high corrosion resistance. The HSCI showed a similar corrosion tendency in the two solutions, while its corrosion rate in the acid soil solution was higher than that in the alkaline soil solution. The corrosion pits on the specimen surface were originated from the original defects in matrix, and the edges of the corrosion pits were more rounded than the original defects after 720 h immersion in the two solutions. The original defects in the HSCI matrix played a significant role in the corrosion process. Originality/value The paper discovered the corrosion evolution of HSCI in the acidic and alkaline soil solutions. What is more, the acceleration role of the original defects on the corrosion of the HSCI in the acidic and alkaline soil solutions was discovered in the paper. The results are beneficial for the material selection of ground grid equipment in engineering.

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