Application of Electrochemical Noise Analysis to Study the Corrosion Behavior of Aluminum Composites

1995 ◽  
Vol 142 (2) ◽  
pp. 405-410 ◽  
Author(s):  
C. Monticelli ◽  
F. Zucchi ◽  
F. Bonollo ◽  
G. Brunoro ◽  
A. Frignani ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Electrochemical Noise ◽  
Noise Analysis ◽  
Aluminum Composites

Corrosion Behavior of Die-Cast and Thixocast AXJ530 Magnesium Alloy in Chloride Medium

2006 ◽  
Vol 15-17 ◽  
pp. 449-454 ◽  
Author(s):  
Sofiene Amira ◽  
M. Shehata ◽  
Dominique Dubé ◽  
R. Tremblay ◽  
Edward Ghali
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Electrochemical Noise ◽  
Noise Analysis ◽  
Nacl Solution ◽  
Chloride Medium ◽  
Die Cast ◽  
Immersion Technique ◽  
Superior Corrosion Resistance

The corrosion behavior of AXJ530 magnesium alloy in 3.5% NaCl solution at 25°C and pH 7.25 has been studied. Die-cast and thixocast specimens were tested using constant immersion technique, potentiodynamic polarization measurements and electrochemical noise analysis. The microstructure of cast specimens and their surface aspect after corrosion tests were analysed and compared. The results show that thixocast specimens have the best corrosion resistance. Their superior corrosion resistance can be attributed mainly to the presence of large pre-existing α-Mg grains.

scholarly journals Electrochemical Noise Analysis on Corrosion Behavior of Carbon Steel Covered with Mill Scale

2004 ◽  
Vol 53 (10) ◽  
pp. 481-488 ◽  
Author(s):  
Masayuki Itagaki ◽  
Shintaro Ebina ◽  
Kunihiro Watanabe ◽  
Takahiro Nukaga ◽  
Fumio Umemura
Keyword(s):  
Carbon Steel ◽  
Corrosion Behavior ◽  
Electrochemical Noise ◽  
Noise Analysis ◽  
Mill Scale

Electrochemical noise analysis to examine the corrosion behavior of Ni-P deposit on AM60B alloy plated by Zr pretreatment

2018 ◽  
Vol 346 ◽  
pp. 29-39 ◽  
Author(s):  
Z. Rajabalizadeh ◽  
D. Seifzadeh ◽  
A. Habibi-Yangjeh ◽  
T. Mesri Gundoshmian ◽  
S. Nezamdoust
Keyword(s):  
Corrosion Behavior ◽  
Electrochemical Noise ◽  
Noise Analysis

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.

scholarly journals Corrosion Behavior of Al in Ethanol–Gasoline Blends

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5544
Author(s):  
Alfredo Brito-Franco ◽  
Jorge Uruchurtu ◽  
Isai Rosales-Cadena ◽  
Roy Lopez-Sesenes ◽  
Sergio Alonso Serna-Barquera ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Sugar Cane ◽  
Electrochemical Noise ◽  
Electrochemical Impedance ◽  
Pure Aluminum ◽  
Electrochemical Techniques ◽  
Intermediate Compound ◽  
Corrosion Process ◽  
Corrosion Rates ◽  
Adsorption Desorption

The corrosion behavior of pure aluminum (Al) in 20 v/v% ethanol–gasoline blends has been studied using electrochemical techniques. Ethanol was obtained from different fruits including sugar cane, oranges, apples, or mangos, whereas other techniques included lineal polarization resistance, electrochemical noise, and electrochemical impedance spectroscopy for 90 days. Results have shown that corrosion rates for Al in all the blends were higher than that obtained in gasoline. In addition, the highest corrosion rate was obtained in the blend containing ethanol obtained from sugar cane. The corrosion process was under charge transfer control in all blends; however, for some exposure times, it was under the adsorption/desorption control of an intermediate compound. Al was susceptible to a localized, plotting type of corrosion in all blends, but they were bigger in size and in number in the blend containing ethanol obtained from sugar cane.

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