Enhanced corrosion resistance of mild steel in normal sulfuric acid medium by 2,5-bis(n-thienyl)-1,3,4-thiadiazoles: Electrochemical, X-ray photoelectron spectroscopy and theoretical studies

2007 ◽  
Vol 253 (23) ◽  
pp. 9267-9276 ◽  
Author(s):  
M. Lebrini ◽  
M. Lagrenée ◽  
M. Traisnel ◽  
L. Gengembre ◽  
H. Vezin ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Sulfuric Acid ◽  
Mild Steel ◽  
Acid Medium ◽  
Photoelectron Spectroscopy ◽  
Theoretical Studies ◽  
X Ray ◽  
Sulfuric Acid Medium

Electropolishing of 316L Stainless Steel Using Sulfuric Acid-Free Electrolyte

2019 ◽  
Vol 141 (10) ◽  
Author(s):  
Wei Han ◽  
Fengzhou Fang
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Sulfuric Acid ◽  
Phosphoric Acid ◽  
Photoelectron Spectroscopy ◽  
316L Stainless Steel ◽  
Electrochemical Analysis ◽  
Limiting Current ◽  
Plateau Region ◽  
X Ray

Abstract The study is to investigate the electropolishing characteristics of 316L stainless steel in a sulfuric acid-free electrolyte of phosphoric acid and glycerol and to explore the possibility of using this eco-friendly electrolyte instead of the widely used sulfuric acid-based electrolyte. The influences of process parameters on polishing effects and the corrosion resistance of electropolished samples are investigated. The experimental results show that the electropolishing temperature and acid concentration are directly related to the mass transport mechanism in the limiting current plateau region. The grain boundaries of workpiece were electrochemically dissolved faster than the grain themselves at the beginning of the electropolishing process because they are more reactive than grains. Moreover, the conventional sulfuric—phosphoric acid electrolyte was also used to electropolish the 316L stainless steel, and the electropolished surfaces were compared with the sulfuric acid-free electrolyte proposed in this study. When the sulfuric acid-free electrolyte was used to electropolish the 316L stainless steel, the X-ray photoelectron spectroscopy (XPS) analysis shows that atomic Cr/Fe ratio of 316L stainless steel was increased from 0.802 to 1.909 after electropolishing process in the sulfuric acid-free electrolyte of phosphoric acid and glycerol. The corrosion resistance of the electropolished 316L stainless steel is studied using electrochemical analysis, and the results are verified experimentally.

Three imidazole ionic liquids as green and eco-friendly corrosion inhibitors for mild steel in sulfuric acid medium

2021 ◽  
Vol 324 ◽  
pp. 115063
Author(s):  
Xianguang Zeng ◽  
Xingwen Zheng ◽  
Lei Guo ◽  
Qian Xu ◽  
Hui Huang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Sulfuric Acid ◽  
Mild Steel ◽  
Acid Medium ◽  
Corrosion Inhibitors ◽  
Sulfuric Acid Medium

Pongamia Pinnata as a Green Corrosion Inhibitor for Mild Steel in 1N Sulfuric Acid Medium

Silicon ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 1793-1807 ◽  
Author(s):  
T. K. Bhuvaneswari ◽  
V. S. Vasantha ◽  
C. Jeyaprabha
Keyword(s):  
Sulfuric Acid ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Acid Medium ◽  
Pongamia Pinnata ◽  
Sulfuric Acid Medium ◽  
Green Corrosion Inhibitor
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