Analysis of Different Methods to Calculate Electrochemical Noise Resistance Using a Three-Electrode Cell

Brusamarello, Valner; Lago, A.; Franco, C. V.

doi:10.5006/1.3287654

Cited by 17 publications

(15 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The direct current (DC) trend has to be eliminated in accordance with other investigations, [7][8][9][10][11][13][14] because this could originate large distortions in subsequent statistical noise data processing. 13 Therefore, removal of the DC trend from the raw noise data was the fi rst step in the noise analysis.…”

Section: Electrochemical Noise Measurements and Analysismentioning

confidence: 80%

Correlation between Electrochemical Noise Resistance and Noise Impedance for Mild and Stainless Steel as a Function of pH

Torres¹,

Uruchurtu²,

Serna³

2007

CORROSION

View full text Add to dashboard Cite

Studies of electrochemical noise resistance in the time domain (R n ) and impedance noise in the frequency domain (R sn ) have been carried out on 1018 (UNS G10180) carbon steel andType 304 (UNS S30400) stainless steel in distilled water in the whole pH range. As a result, a good correlation between R n and R sn was found in solutions with different pH values (0 to 14), using the electrochemical noise (EN) technique. Additionally, linear polarization resistance technique (LPR) was used to obtain the polarization resistance (R p ) for comparison for the R n and R sn . Results showed a good correspondence between R n and R p values in the whole pH range. R sn was calculated using the fast Fourier transformation (FFT) algorithm, using voltage and current signals. These were obtained using the method established by Bertocci and Mansfeld and by an alternative method. Both methods generated similar results and present a similar pattern for R p , R n , and R sn values. This was true for alkaline, basic, and acidic environments as evidenced by the results in this work.

show abstract

Section: Electrochemical Noise Measurements and Analysismentioning

confidence: 80%

Correlation between Electrochemical Noise Resistance and Noise Impedance for Mild and Stainless Steel as a Function of pH

Torres¹,

Uruchurtu²,

Serna³

2007

CORROSION

View full text Add to dashboard Cite

show abstract

“…The parameter a sometimes can be used to distinguish between the different types of corrosion (Brusamarello et al, 2000;Legat and Dolecek, 1995). In uniform corrosion, the slope of the potential power spectrum density is close to zero (a from 22 to 7 dB V/decade), whereas in localized corrosion the values of the parameter a generally are much higher (from 20 to 30 dB V/decade).…”

Section: Resultsmentioning

confidence: 98%

“…To evaluate the corrosion resistance noise value (R n ) (Brusamarello et al, 2000) the following expression was used:…”

Section: Corrosion Reaction Evolution Stimulated By the Bacteriamentioning

confidence: 99%

Corrosion inhibition in copper by isolated bacteria

García

Rivera

Campos-Guillén

et al. 2012

Anti-Corrosion Methods and Materials

View full text Add to dashboard Cite

Purpose -The purpose of this paper is to report a study of microbiological influenced corrosion (MIC) of copper due to bacteria strains isolated from potable water pipes and oxidation lagoons using electrochemical noise (EN) analysis and scanning electron microscopy (SEM). Design/methodology/approach -Bacteria strains isolated from copper surfaces of potable water pipes and from oxidation lagoons were identified, based on the 16S rDNA gene sequence analysis. Corrosion studies were undertaken over a period of six weeks, placing copper electrodes inside an LB culture media with and without bacteria. The corrosion resistance was obtained using EN analysis. In all the cases, the corrosion type was identified. SEM images of the copper electrodes were taken to evaluate the surface condition. Findings -The bacteria strains identified were: Pantoea agglomerans, Alcaligenes faecalis, Bacillus cereus, Brucellaceae bacterium, Enterobacter cloacae, Delftia tsuruhatensis, and Pseudochrobactrum asaccharolyticum. EN analysis gave noise resistance values in the range 1,036-5,040 Vcm 2 for the control samples and in the range of 2,336-22,573 Vcm 2 for samples that had been inoculated with bacteria. It was found that a decrease in the rate of corrosion took place due to the development of a biofilm by the microorganisms on the copper surface. SEM images corroborated the presence of the biofilm on the copper electrodes. Practical implications -The isolated bacteria strain reduced the rate of corrosion on the copper electrodes, as shown by the SEM images and EN analysis results, due to the formation of a biofilm that can act as an anticorrosive coating. Originality/value -Even though MIC is a known phenomenon, it has not been reported that isolated bacteria strains can reduce corrosion on the surface of copper potable water pipes and in oxidation lagoons.

show abstract

“…12,28,36 The R n value had been exploited to qualitatively evaluate the corrosion rate of DSS 2101. The plots of noise resistances with respect to time of DSS 2101 immersion in three test solutions are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical noise analysis of duplex stainless steel 2101 exposed to different corrosive solutions

Jiang

Guo

et al. 2016

Corrosion Engineering, Science and Technology

View full text Add to dashboard Cite

The corrosion behaviour of duplex stainless steel 2101 exposed to 0.1 wt-%NaOH, 5.0 wt-%H 2 SO 4 and 6.0 wt-%FeCl 3 solutions was investigated with an electrochemical noise technique. The time records revealed salient features of the steel in the three solutions, and the corresponding corrosion morphologies were shown. The slopes of the power spectral density plots of current and potential noises were associated with the nature of corrosion attack. The corrosion rates in the three media were reflected by the noise resistance, presenting good correlation with the results from linear polarisation and electrochemical impedance spectroscopy. research has been dedicated to the studies of the DSS. carbon steel, aluminium, iron and copper, and limited ported data have been obtained on stainless steel, mild steel, terials and environments. of ma dying the nature of corrosion processes on a wide range vestigators have determined the reliability of ENM for stu-ises can be obtained. During the past few years, many in-the power spectral density (PSD) of potential and current no-

show abstract

Analysis of Different Methods to Calculate Electrochemical Noise Resistance Using a Three-Electrode Cell

Cited by 17 publications

References 0 publications

Correlation between Electrochemical Noise Resistance and Noise Impedance for Mild and Stainless Steel as a Function of pH

Correlation between Electrochemical Noise Resistance and Noise Impedance for Mild and Stainless Steel as a Function of pH

Corrosion inhibition in copper by isolated bacteria

Electrochemical noise analysis of duplex stainless steel 2101 exposed to different corrosive solutions

Contact Info

Product

Resources

About