Electrochemical noise analysis of corrosion behaviour of asymmetric electrodes made of mild steel in NaHCO3 solutions at different NaCl concentrations

Measurement ◽  
2020 ◽  
Vol 155 ◽  
pp. 107501 ◽  
Author(s):  
R. Naghizade ◽  
M. Shahidi Zandi ◽  
S.M.A. Hosseini
Keyword(s):  
Mild Steel ◽  
Electrochemical Noise ◽  
Corrosion Behaviour ◽  
Noise Analysis ◽  
Asymmetric Electrodes

Study of pitting corrosion on mild steel during wet–dry cycles by electrochemical noise analysis based on chaos theory

2013 ◽  
Vol 66 ◽  
pp. 183-195 ◽  
Author(s):  
Anna Chen ◽  
Fahe Cao ◽  
Xiaoning Liao ◽  
Wenjuan Liu ◽  
Liyun Zheng ◽  
...  
Keyword(s):  
Mild Steel ◽  
Chaos Theory ◽  
Pitting Corrosion ◽  
Electrochemical Noise ◽  
Noise Analysis

scholarly journals Corrosion Behaviour of Metals in Artificial Tear Solution

2016 ◽  
Vol 8 (3) ◽  
pp. 1716-1735
Author(s):  
C. Kumar ◽  
A. John Amal Raj ◽  
S.K. Selvaraj
Keyword(s):  
Corrosion Resistance ◽  
Mild Steel ◽  
Corrosion Behaviour ◽  
Ac Impedance ◽  
Impedance Spectra ◽  
Artificial Tear ◽  
Polarization Study ◽  
Ac Impedance Spectra

Human tear comes in contact with a number of instruments during operation in the eyes.  This results in a variety of undesirable effects such as corrosion and malfunction.  Corrosion behaviour of five metals, namely, mild steel (MS), mild steel coated with zinc (MS-Zn), Ni-Cr, Ni-Ti super elastic (Ni-Ti.SE), and SS 316 L in artificial tear solution has been studied by polarization study and AC impedance spectra.  The study reveals that the decreasing order of corrosion resistance in artificial tear solution is : Ni-Ti SE > Ni-Cr > SS 316 L > MS-Zn > MS.  The first three metals are better candidates and the first one is the best candidate for making instruments used in operation in the eyes, in presence of tears.

THE USE OF ELECTROCHEMICAL NOISE ANALYSIS ON CORRODING SYSTEMS

2004 ◽  
Vol 04 (03) ◽  
pp. R39-R55 ◽  
Author(s):  
G. MONTESPERELLI ◽  
G. GUSMANO
Keyword(s):  
Electrochemical Noise ◽  
Quantitative Estimation ◽  
Noise Analysis ◽  
Electrochemical Techniques ◽  
Sampling Interval ◽  
Entropy Method ◽  
Corrosion Mechanism ◽  
Statistical Parameters ◽  
Noise Data ◽  
Sampling Duration

This paper gives an overview of the use of Electrochemical Noise (EN) for corrosion studying and monitoring. Since the quality and reliability of noise data are affected by a number of acquisition parameters, such as sampling interval, sampling duration, D.C. trend and instrumental noise, some experimental and practical aspects were discussed. The use of statistical parameters such as standard deviation, Pit Index and/or Localization Index and Noise Resistance to analyze noise data of corroding systems were examined. Many experimental applications of Electrochemical Noise Measurements on different metals and alloys were given. EN data have been compared with traditional electrochemical techniques. EN allowed to characterize the corrosion behavior of samples giving in some cases good quantitative estimation. The transposition of current and potential noise acquisition in the frequency domain (by Fast Fourier Transform and/or Maximum Entropy Method), gave further information on corrosion mechanism and in particular permitted to identify the type of corrosion. Finally the use of Discriminant Analysis permitted to deduce the best sampling frequency and sampling duration for EN acquisition, able to discriminate between two different situations.

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